Comment déterminer si vous empruntez des fonds à IBKR
Si le solde de trésorerie total pour un compte donné est débiteur ou négatif, les fonds sont alors empruntés et le prêt est soumis à des intérêts. Un prêt peut cependant exister même si le solde de trésorerie total est créditeur, ou positif, après compensation par calcul d'une position nette ou suite à des différences de timing. Les exemples les plus communs sont les suivants :
1. Soldes de devises créditeur vs. débiteur – les titulaires de compte peuvent emprunter du cash libellé dans une devise si ce montant peut être sécurisé par un solde de trésorerie créditeur dans une autre devise. Prenons l'exemple d'un compte dont l'USD est la devise de base qui détient un solde de trésorerie créditeur en USD réglé de 10,000, et un solde de trésorerie en EUR réglé de 5,000, avec un taux de change EUR.USD de 1.38:1. Dans cet exemple, aux fins de reporting et de calcul des intérêts, le solde de trésorerie global est un crédit de 3,088 USD (10,000 – (5,000 * 1.38)). Puisque chaque devise est soumise à un approvisionnement unique et à des accords de réinvestissement, le solde débiteur serait soumis à des coûts de financement basés sur le taux de benchmark et le palier correspondant. Le coût peut être compensé par les intérêts gagnés sur le solde créditeur sur la base du taux de benchmark et palier.
2. Soldes bruts par segment – L'Universal Account IBKR comporte des sous-comptes ou segments, chacun d'entre eux détient des positions et montants de garantie qui, à des fins réglementaires et de protection des clients, ne peuvent pas être amalgamés. Cette distinction ne permet pas la compensation par calcul d'une position nette entres les segments : un crédit dans un segment ne peut par conséquent pas compenser le débit d'un autre. Prenons par exemple le cas d'un compte IBLLC détenant des positions de titres et contrats dont le segment contenant les titres enregistre un solde débiteur de 3,000 USD et le segment contenant les contrats un solde créditeur de 8,000 USD. Bien que le compte enregistre un solde créditeur global net de 5,000 USD, le solde débiteur sera soumis à des charges d'intérêts qui peuvent compenser partiellement les intérêts gagnés sur le solde positif.
3. Ventes à découvert – une vente à découvert est une transaction sur marge par laquelle un titulaire de compte emprunte une action plutôt que des espèces. Bien que le produit de la vente short soit crédité sur le solde de trésorerie du compte, un dépôt de garantie doit être constitué auprès du préteur des actions pour garantir leur rendement. Par conséquent, et en reconnaissance du fait que la transaction de prêt est soumise à ses propres conditions de financement, il n'est pas tenu compte du montant de garantie en cash du prêt aux fins de déterminer si un prêt sur marge existe.
Prenons l'exemple d'un compte enregistrant une valeur nette liquidative (tous les soldes en USD) de 9,000 dont un solde de trésorerie positif de 4,000, une valeur en actions longues de 10,000 et une valeur en actions short de 5,000. Afin de déterminer si les fonds sont empruntés pour financer la position d'actions longues, la portion cash de 5,000 tenant lieu de dépôt de garantie auprès du prêteur des actions est déduite du solde de trésorerie global de 4,000, engendrant un débit de 1,000. Le débit est soumis à des charges d'intérêts et le cash sous-jacent à l'action emprunte soit une charge d'intérêts dans le cas d'actions difficiles à emprunter, soit une remise sur action short si les actions sont faciles à emprunter et les taux de réinvestissement suffisamment élevés.
4. Fonds non réglés - les emprunts sont déterminés en fonction des fonds réglés et le moment où le paiement est dû ou reçu pour une transaction donnée dépend du produit (par ex. les actions se règlent généralement à 3 jours ouvrables, les devises spot à 2 et les dérivés à 1). Aux fins d'établissement des relevés et de la plateforme de trading, les soldes de trésorerie sont reportés sur la base de la date de transaction plutôt que de la date de règlement, comme si le règlement avait eu lieu.
Par conséquent, un compte enregistrant un solde de trésorerie positif peut, en réalité, toujours être l'objet d'un prêt sur marge si ce dernier inclut le produit de la vente de l'action acheté avec les fonds empruntés et en attente de règlement. De la même manière, un compte peut enregistrer un solde débiteur basé sur la date de transaction mais ne pas encore être l'objet d'un prêt sur marge et de charges d'intérêts puisque la transaction n'a pas encore été réglée.
Pour plus d'informations concernant le calcul des intérêts, veuillez consulter l'article Comment sont calculés les intérêts.
Allocation of Partial Fills
How are executions allocated when an order receives a partial fill because an insufficient quantity is available to complete the allocation of shares/contracts to sub-accounts?
Overview:
From time-to-time, one may experience an allocation order which is partially executed and is canceled prior to being completed (i.e. market closes, contract expires, halts due to news, prices move in an unfavorable direction, etc.). In such cases, IB determines which customers (who were originally included in the order group and/or profile) will receive the executed shares/contracts. The methodology used by IB to impartially determine who receives the shares/contacts in the event of a partial fill is described in this article.
Background:
Before placing an order CTAs and FAs are given the ability to predetermine the method by which an execution is to be allocated amongst client accounts. They can do so by first creating a group (i.e. ratio/percentage) or profile (i.e. specific amount) wherein a distinct number of shares/contracts are specified per client account (i.e. pre-trade allocation). These amounts can be prearranged based on certain account values including the clients’ Net Liquidation Total, Available Equity, etc., or indicated prior to the order execution using Ratios, Percentages, etc. Each group and/or profile is generally created with the assumption that the order will be executed in full. However, as we will see, this is not always the case. Therefore, we are providing examples that describe and demonstrate the process used to allocate partial executions with pre-defined groups and/or profiles and how the allocations are determined.
Here is the list of allocation methods with brief descriptions about how they work.
· AvailableEquity
Use sub account’ available equality value as ratio.
· NetLiq
Use subaccount’ net liquidation value as ratio
· EqualQuantity
Same ratio for each account
· PctChange1:Portion of the allocation logic is in Trader Workstation (the initial calculation of the desired quantities per account).
· Profile
The ratio is prescribed by the user
· Inline Profile
The ratio is prescribed by the user.
· Model1:
Roughly speaking, we use each account NLV in the model as the desired ratio. It is possible to dynamically add (invest) or remove (divest) accounts to/from a model, which can change allocation of the existing orders.
Basic Examples:
Details:
CTA/FA has 3-clients with a predefined profile titled “XYZ commodities” for orders of 50 contracts which (upon execution) are allocated as follows:
Account (A) = 25 contracts
Account (B) = 15 contracts
Account (C) = 10 contracts
Example #1:
CTA/FA creates a DAY order to buy 50 Sept 2016 XYZ future contracts and specifies “XYZ commodities” as the predefined allocation profile. Upon transmission at 10 am (ET) the order begins to execute2but in very small portions and over a very long period of time. At 2 pm (ET) the order is canceled prior to being executed in full. As a result, only a portion of the order is filled (i.e., 7 of the 50 contracts are filled or 14%). For each account the system initially allocates by rounding fractional amounts down to whole numbers:
Account (A) = 14% of 25 = 3.5 rounded down to 3
Account (B) = 14% of 15 = 2.1 rounded down to 2
Account (C) = 14% of 10 = 1.4 rounded down to 1
To Summarize:
A: initially receives 3 contracts, which is 3/25 of desired (fill ratio = 0.12)
B: initially receives 2 contracts, which is 2/15 of desired (fill ratio = 0.134)
C: initially receives 1 contract, which is 1/10 of desired (fill ratio = 0.10)
The system then allocates the next (and final) contract to an account with the smallest ratio (i.e. Account C which currently has a ratio of 0.10).
A: final allocation of 3 contracts, which is 3/25 of desired (fill ratio = 0.12)
B: final allocation of 2 contracts, which is 2/15 of desired (fill ratio = 0.134)
C: final allocation of 2 contract, which is 2/10 of desired (fill ratio = 0.20)
The execution(s) received have now been allocated in full.
Example #2:
CTA/FA creates a DAY order to buy 50 Sept 2016 XYZ future contracts and specifies “XYZ commodities” as the predefined allocation profile. Upon transmission at 11 am (ET) the order begins to be filled3 but in very small portions and over a very long period of time. At 1 pm (ET) the order is canceled prior being executed in full. As a result, only a portion of the order is executed (i.e., 5 of the 50 contracts are filled or 10%).For each account, the system initially allocates by rounding fractional amounts down to whole numbers:
Account (A) = 10% of 25 = 2.5 rounded down to 2
Account (B) = 10% of 15 = 1.5 rounded down to 1
Account (C) = 10% of 10 = 1 (no rounding necessary)
To Summarize:
A: initially receives 2 contracts, which is 2/25 of desired (fill ratio = 0.08)
B: initially receives 1 contract, which is 1/15 of desired (fill ratio = 0.067)
C: initially receives 1 contract, which is 1/10 of desired (fill ratio = 0.10)
The system then allocates the next (and final) contract to an account with the smallest ratio (i.e. to Account B which currently has a ratio of 0.067).
A: final allocation of 2 contracts, which is 2/25 of desired (fill ratio = 0.08)
B: final allocation of 2 contracts, which is 2/15 of desired (fill ratio = 0.134)
C: final allocation of 1 contract, which is 1/10 of desired (fill ratio = 0.10)
The execution(s) received have now been allocated in full.
Example #3:
CTA/FA creates a DAY order to buy 50 Sept 2016 XYZ future contracts and specifies “XYZ commodities” as the predefined allocation profile. Upon transmission at 11 am (ET) the order begins to be executed2 but in very small portions and over a very long period of time. At 12 pm (ET) the order is canceled prior to being executed in full. As a result, only a portion of the order is filled (i.e., 3 of the 50 contracts are filled or 6%). Normally the system initially allocates by rounding fractional amounts down to whole numbers, however for a fill size of less than 4 shares/contracts, IB first allocates based on the following random allocation methodology.
In this case, since the fill size is 3, we skip the rounding fractional amounts down.
For the first share/contract, all A, B and C have the same initial fill ratio and fill quantity, so we randomly pick an account and allocate this share/contract. The system randomly chose account A for allocation of the first share/contract.
To Summarize3:
A: initially receives 1 contract, which is 1/25 of desired (fill ratio = 0.04)
B: initially receives 0 contracts, which is 0/15 of desired (fill ratio = 0.00)
C: initially receives 0 contracts, which is 0/10 of desired (fill ratio = 0.00)
Next, the system will perform a random allocation amongst the remaining accounts (in this case accounts B & C, each with an equal probability) to determine who will receive the next share/contract.
The system randomly chose account B for allocation of the second share/contract.
A: 1 contract, which is 1/25 of desired (fill ratio = 0.04)
B: 1 contract, which is 1/15 of desired (fill ratio = 0.067)
C: 0 contracts, which is 0/10 of desired (fill ratio = 0.00)
The system then allocates the final [3] share/contract to an account(s) with the smallest ratio (i.e. Account C which currently has a ratio of 0.00).
A: final allocation of 1 contract, which is 1/25 of desired (fill ratio = 0.04)
B: final allocation of 1 contract, which is 1/15 of desired (fill ratio = 0.067)
C: final allocation of 1 contract, which is 1/10 of desired (fill ratio = 0.10)
The execution(s) received have now been allocated in full.
Available allocation Flags
Besides the allocation methods above, user can choose the following flags, which also influence the allocation:
· Strict per-account allocation.
For the initially submitted order if one or more subaccounts are rejected by the credit checking, we reject the whole order.
· “Close positions first”1.This is the default handling mode for all orders which close a position (whether or not they are also opening position on the other side or not). The calculation are slightly different and ensure that we do not start opening position for one account if another account still has a position to close, except in few more complex cases.
Other factor affects allocations:
1) Mutual Fund: the allocation has two steps. The first execution report is received before market open. We allocate based onMonetaryValue for buy order and MonetaryValueShares for sell order. Later, when second execution report which has the NetAssetValue comes, we do the final allocation based on first allocation report.
2) Allocate in Lot Size: if a user chooses (thru account config) to prefer whole-lot allocations for stocks, the calculations are more complex and will be described in the next version of this document.
3) Combo allocation1: we allocate combo trades as a unit, resulting in slightly different calculations.
4) Long/short split1: applied to orders for stocks, warrants or structured products. When allocating long sell orders, we only allocate to accounts which have long position: resulting in calculations being more complex.
5) For non-guaranteed smart combo: we do allocation by each leg instead of combo.
6) In case of trade bust or correction1: the allocations are adjusted using more complex logic.
7) Account exclusion1: Some subaccounts could be excluded from allocation for the following reasons, no trading permission, employee restriction, broker restriction, RejectIfOpening, prop account restrictions, dynamic size violation, MoneyMarketRules restriction for mutual fund. We do not allocate to excluded accountsand we cancel the order after other accounts are filled. In case of partial restriction (e.g. account is permitted to close but not to open, or account has enough excess liquidity only for a portion of the desired position).
Footnotes:
Overview of Dividend Payments in Lieu ("PIL")
Payment In Lieu of a Dividend (“payment in lieu” or “PIL”) is a term commonly used to describe a cash payment to an account in an amount equivalent to the ordinary dividend. Generally, the amount paid is per share owned. In addition, the dividend in most cases is paid quarterly (i.e., four times per year). The dividend payment is classified as follows: (1) ordinary dividend; and/or (2) payment in lieu of dividend. The former designation is for a payment received directly from the issuer or its paying agent. The latter designation is used when a cash payment is received from other than the issuer or the issuer’s agent.
Payment in lieu of an ordinary dividend may be received when the shares have been bought on margin, or when the account has a subsequent margin loan due to borrowing money to facilitate the payment for additional purchases of shares or as the result of a withdrawal from the margin account. Payment in lieu of a dividend may also be received when shares are owed to the brokerage firm and have not been received by the dividend record date.
To better understand the difference between an ordinary dividend and a payment in lieu, we will explain the steps taken by IB to comply with US regulations. Each business day, the Firm analyzes the positions in each customer account, every borrow, every loan, every pledge of shares for each security held by its customers to determine how many shares are held on margin and the associated margin loan balances. For each security that is fully paid, we are required to segregate those shares in a good control location (for example, a depository or a US bank. See KB1964). For shares that are held as collateral for a margin loan we are allowed to hypothecate and re-hypothecate shares valued up to 140 percent of the total debit balance in the customer account (See KB1967).
While the guidelines noted above for segregation of securities are clear, there are exceptions that are outside of the Firm's control. For instance, through no fault of its own, IB may have a deficit in segregated shares due to customer activity that changes the Firm’s overall segregation requirement for a security. This may be for a variety of reasons including a delay in receiving shares that have been loaned out to a counterparty after segregation requirements are recalculated and the Firm has issued a stock loan recall, sales of securities by one or more customers that reduce or eliminate margin loans, the deposit of cash by customers that similarly reduce or eliminate margin loans, or a failure of a counterparty to deliver shares for a trade settlement.
Upon issuing a recall of shares loaned, rules permit the borrower of the shares up to 3 business days to return them. The borrower of the shares is required to return them to us when we issue a recall, but if by business day 3 the shares have not been returned, IB may then issue a buy-in notice to begin the process of regaining possession of the shares. An additional 3 business days is generally needed for the purchased shares to settle and be delivered to the firm. Similarly if a counterparty fails to deliver by settlement date, shares to IB to settle a customer purchase, IB can issue a buy-in notice but the purchase of such shares are also subject to trade settlement in 3 days.
To summarize, if by the record date of a dividend certain shares have not been delivered to IB, the Firm will be paid an amount of cash that is equivalent to the dividend amount, but IB will not receive a qualified dividend payment directly from the issuer. In such cases, the Firm will receive PIL and will have no choice but to allocate such payment in lieu to customer accounts. The firm first allocates PIL to those accounts who hold the shares as collateral for a margin loan. If, after PIL is allocated to all shareholders whose accounts are not fully paid, any portion of PIL remains to be paid, it is allocated on a pro-rata basis to each remaining client account.
Account holders should be aware that a PIL may have different tax consequences than an ordinary dividend and should consult a tax advisor to understand such differences and whether they apply to their particular situation.
Exposure Fee Monitoring via Account Window
The Account Window provides the high-level information suitable for monitoring one's account on a real-time basis. This includes key balances such as total equity and cash, the portfolio composition and margin balances for determining compliance with requirements and available buying power. This window also includes information relating to the most recently assessed exposure fee and a projection of the next fee taking into consideration current positions.
To open the Account Window:
• From TWS classic workspace, click on the Account icon, or from the Account menu select Account Window (Exhibit 1)
Exhibit 1
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• From TWS Mosaic workspace, click on Account from the menu, and then select Account Window (Exhibit 2)
Exhibit 2
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After opening the window, scroll down to the Margin Requirements section and click on the + sign in the upper-right hand corner to expand the section. There, the "Last" and "Estimated Next" exposure fees will be detailed for each of the product classifications to which the fee applies (e.g., Equity, Oil). Note that the "Last" balance represents the fee as of the date last assessed (note that fees are computed based upon open positions held as of the close of business and assessed shortly thereafter). The "Estimated Next" balance represents the projected fee as of the current day's close taking into account position activity since the prior calculation (Exhibit 3).
Exhibit 3.jpg)
To set the default view when the section is collapsed, click on the checkbox alongside any line item and those line items will remain displayed at all times.
Please see KB2275 for information regarding the use of IB's Risk Navigator for managing and projecting the Exposure Fee and KB2276 for verifying exposure fee through the Order Preview screen.
Important Notes
1. The Estimated Next Exposure Fee is a projection based upon readily available information. As the fee calculation is based upon information (e.g., prices and implied volatility factors) available only after the close, the actual fee may differ from that of the projection.
2. Exposure Fee Monitoring via the Account window is only available for accounts that have been charged an exposure fee in the last 30 days
Order Preview - Check Exposure Fee Impact
IB provides a feature which allows account holders to check what impact, if any, an order will have upon the projected Exposure Fee. The feature is intended to be used prior to submitting the order to provide advance notice as to the fee and allow for changes to be made to the order prior to submission in order to minimize or eliminate the fee.
The feature is enabled by right-clicking on the order line at which point the Order Preview window will open. This window will contain a link titled "Check Exposure Fee Impact" (see red highlighted box in Exhibit I below).
Exhibit I
Clicking the link will expand the window and display the Exposure fee, if any, associated with the current positions, the change in the fee were the order to be executed, and the total resultant fee upon order execution (see red highlighted box in Exhibit II below). These balances are further broken down by the product classification to which the fee applies (e.g. Equity, Oil). Account holders may simply close the window without transmitting the order if the fee impact is determined to be excessive.
Exhibit II
Please see KB2275 for information regarding the use of IB's Risk Navigator for managing and projecting the Exposure Fee and KB2344 for monitoring fees through the Account Window
Important Notes
1. The Estimated Next Exposure Fee is a projection based upon readily available information. As the fee calculation is based upon information (e.g., prices and implied volatility factors) available only after the close, the actual fee may differ from that of the projection.
2. The Check Exposure Fee Impact is only available for accounts that have been charged an exposure fee in the last 30 days
Tools Provided to Monitor and Manage Margin
IB provides a variety of tools and information intended to provide account holders with real-time details as to their state of margin compliance so as to avoid forced liquidations. These include the following:
a. Account Window – The account window is available for real-time account activity monitoring. This window will display key values that update with every price change in the portfolio. Included are account balances (cash, Net Liquidation Value, Equity with Loan Value), margin requirements (current, look ahead, overnight and post expiration), and balances available for trading (Available Funds and Excess Equity).
b. Preview Order/Check Margin – Prior to transmitting an order it can be previewed including the impact upon the margin requirement were the order to be executed. Additional information may be found in KB644.
c. Communications – IB will act to send out communications via TWS bulletin and/or email when the margin cushion in an account reaches 10% and a margin deficiency is therefore approaching. Account holders may also create their own margin alerts based upon the margin cushion which, when triggered, may generate email or text message alerts, TWS pop-up messages and flashing rows, and sound alarms.
d. Reports – A Daily Margin Report is made available with Account Management which reflects key margin balances and for portfolio margin accounts, requirements broken down by security class.
In addition, IB provides a Last to Liquidate feature within the TWS Account window that allows customers to specify the positions they would prefer IB liquidate last in the event of a margin deficit. While IB will attempt on a best efforts basis to adhere to such requests, account positions and market conditions may make doing so impractical and IB therefore reserves the right to liquidate in the sequence it deems most optimal.
Trading on margin in an IRA account
IRA accounts, by definition, may not use borrowed funds to purchase securities and must pay for all long stock purchases in full, may not carry short stock positions and may not hold a debit cash balance (in any currency). IRA accounts are eligible to carry futures and option contracts. In addition, IB offers a specific form of IRA account referred to as a “Margin IRA” that allows the account holder to trade with unsettled funds, carry American style option spreads and maintain long balances in multiple currency denominations.
For additional information regarding trading permissions in an IRA account, refer to KB188.
How to determine if you are borrowing funds from IBKR
If the aggregate cash balance in a given account is a debit, or negative, then funds are being borrowed and the loan is subject to interest charges. A loan may still exist, however, even if the aggregate cash balance is a credit, or positive, as a result of balance netting or timing differences. The most common examples of this are as follows:
1. Long vs. Short Currency Balances – accounts holders may borrow cash denominated in one currency if it can be secured by a credit balance in another. Take, for example, a USD base currency account holding a long USD settled cash balance of 10,000, a short EUR settled cash balance of 5,000, with a EUR.USD exchange rate of 1.38:1. Here, for statement reporting and interest computation purposes, the overall cash balance is a USD credit of 3,088 (10,000 – (5,000 * 1.38)). As each currency is subject to a unique funding and reinvestment arrangement, the short balance would be subject to financing costs based upon its benchmark rate and tier. This cost may be offset by any interest earned on the long balance based upon its benchmark rate and tier.
2. Gross Balances by Segment – IBKR’s Universal Account contains multiple sub accounts or segments, each of which holds positions and collateral which, for regulatory and customer protection purposes, may not be commingled. This separation does not allow for netting of balances across segments and a credit in one segment may therefore not offset a debit in another. Take, for example, an IBLLC account holding both securities and commodities positions with the securities segment maintaining a debit cash balance of USD 3,000 and the commodities segment a credit cash balance of USD 8,000. While the account holds an overall net credit balance of USD 5,000, the short balance would be subject to an interest charge which may be partially offset by any interest earned on the long balance.
3. Short Sales – a short sale is a margin transaction in which the account holder is borrowing stock rather than cash. While the proceeds from the short sale are credited to the cash balance of the account, these funds must be posted with the lender of the shares as collateral to secure their return. As a result, and in recognition of the fact that the loan transaction is subject to its own financing terms, the cash collateralizing the loan is excluded for the purpose of determining whether a margin loan exists.
As example, consider an account reporting net liquidating equity (all balances in USD) of 9,000 comprised of a credit cash balance of 4,000, long stock valued at 10,000 and short stock valued at 5,000. In order to determine whether funds are being borrowed to finance the long stock position, the 5,000 portion of the cash pledged as collateral to the lender of the shares is deducted from the overall 4,000 cash balance, resulting in a 1,000 debit. This debit is subject to interest charges and the cash underlying the stock borrow either an interest charge in the case of hard to borrow shares or a short stock rebate if the shares are easy to borrow and reinvestment rates sufficiently high.
4. Unsettled Funds - borrowings are determined based upon settled funds and the time frame by which payment is due or received for a given transaction is product specific (e.g., stocks generally settle in 3 business days, spot currencies 2 and derivatives 1). For statement and trading platform purposes, cash balances are reported on a trade date rather than settlement date basis, as if settlement has completed.
As a result, an account reporting a credit cash balance may, in fact, still be carrying a margin loan if that balance includes proceeds from the sale of stock purchased with borrowed funds awaiting settlement. Similarly, an account may report a trade date based debit balance, but not yet incurring a margin loan and interest charges, as the trade has not yet settled.
For additional information regarding interest calculations, please refer to How Interest is Calculated.
Overview of Margin Methodologies
Introduction
The methodology used to calculate the margin requirement for a given position is largely determined by the following three factors:
1. The product type;
2. The rules of the exchange on which the product is listed and/or the primary regulator of the carrying broker;
3. IBKR’s “house” requirements.
While a number of methodologies exist, they tend to be categorized into one of two approaches: rules based or risk based. Rules based methods generally assume uniform margin rates across like products, offer no inter-product offsets and consider derivative instruments in a manner similar to that of their underlying. In this sense, they offer ease of computation but oftentimes make assumptions which, while simple to execute, may overstate or understate the risk of an instrument relative to its historic performance. A common example of a rules based methodology is the U.S. based Reg. T requirement.
In contrast, risk based methodologies often seek to apply margin coverage reflective of the product’s past performance, recognize some inter-product offsets and seek to model the non-linear risk of derivative products using mathematical pricing models. These methodologies, while intuitive, involve computations which may not be easily replicable by the client. Moreover, to the extent that their inputs rely upon observed market behavior, may result in requirements that are subject to rapid and sizable fluctuation. Examples of risk based methodologies include TIMS and SPAN.
Regardless of whether the methodology is rules or risk based, most brokers will apply “house” margin requirements which serve to increase the statutory, or base, requirement in targeted instances where the broker’s view of exposure is greater than that which would satisfied solely by meeting that base requirement. An overview of the most common risk and rules based methodologies is provided below.
Methodology Overview
Risk Based
a. Portfolio Margin (TIMS) – The Theoretical Intermarket Margin System, or TIMS, is a risk based methodology created by the Options Clearing Corporation (OCC) which computes the value of the portfolio given a series of hypothetical market scenarios where price changes are assumed and positions revalued. The methodology uses an option pricing model to revalue options and the OCC scenarios are augmented by a number of house scenarios which serve to capture additional risks such as extreme market moves, concentrated positions and shifts in option implied volatilities. In addition, there are certain securities (e.g., Pink Sheet, OTCBB and low cap) for which margin may not be extended. Once the projected portfolio values are determined at each scenario, the one which projects the greatest loss is the margin requirement.
Positions to which the TIMS methodology is eligible to be applied include U.S. stocks, ETFs, options, single stock futures and Non U.S. stocks and options which meet the SEC’s ready market test.
As this methodology uses a much more complex set of computations than one that is rules based, it tends to more accurately model risk and generally offers greater leverage. Given its ability to offer enhanced leverage and that the requirements fluctuate and may react quickly to changing market conditions, it is intended for sophisticated individuals and requires minimum equity of $110,000 to initiate and $100,000 to maintain. Requirements for stocks under this methodology generally range from 15% to 30% with the more favorable requirement applied to portfolios which contain a highly diversified group of stocks which have historically exhibited low volatility and which tend to employ option hedges.
b. SPAN – Standard Portfolio Analysis of Risk, or SPAN, is a risk-based margin methodology created by the Chicago Mercantile Exchange (CME) that is designed for futures and future options. Similar to TIMS, SPAN determines a margin requirement by calculating the value of the portfolio given a set of hypothetical market scenarios where underlying price changes and option implied volatilities are assumed to change. Again, IBKR will include in these assumptions house scenarios which account for extreme price moves along with the particular impact such moves may have upon deep out-of-the-money options. The scenario which projects the greatest loss becomes the margin requirement. A detailed overview of the SPAN margining system is provided in KB563.
Rules Based
a. Reg. T – The U.S. central bank, the Federal Reserve Board, holds responsibility for maintaining the stability of the financial system and containing systemic risk that may arise in financial markets. It does this, in part, by governing the amount of credit that broker dealers may extend to customers who borrow money to buy securities on margin.
This is accomplished through Regulation T, or Reg. T as it is commonly referred, which provides for establishment of a margin account and which imposes the initial margin requirement and payment rules on certain securities transactions. For example, on stock purchases, Reg. T currently requires an initial margin deposit by the client equal to 50% of the purchase value, allowing the broker to extend credit or finance the remaining 50%. For example, an account holder purchasing $1,000 worth of securities is required to deposit $500 and allowed to borrow $500 to hold those securities.
Reg. T only establishes the initial margin requirement and the maintenance requirement, the amount necessary to continue holding the position once initiated, is set by exchange rule (25% for stocks). Reg. T also does not establish margin requirements for securities options as this falls under the jurisdiction of the listing exchange’s rules which are subject to SEC approval. Options held in a Reg.T account are also subject to a rules based methodology where short positions are treated like a stock equivalent and margin relief is provided for spread transactions. Finally, positions held in a qualifying portfolio margin account are exempt from the requirements of Reg. T.
Where to Learn More
Tools provided to monitor and manage margin
How to determine if you are borrowing funds from IBKR
Why does IBKR calculate and report a margin requirement when I am not borrowing funds?
Determining Buying Power
Buying power serves as a measurement of the dollar value of securities that one may purchase in a securities account without depositing additional funds. In the case of a cash account where, by definition, securities may not be purchased using funds borrowed from the broker and must be paid for in full, buying power is equal to the amount of settled cash on hand. Here, for example, an account holding $10,000 in cash may purchase up to $10,000 in stock.
In a margin account, buying power is increased through the use of leverage provided by the broker using cash as well as the value of stocks already held in the account as collateral. The amount of leverage depends upon whether the account is approved for Reg. T margin or Portfolio Margin. Here, a Reg. T account holding $10,000 in cash may purchase and hold overnight $20,000 in securities as Reg. T imposes an initial margin requirement of 50%, which translates to buying power of 2:1 (i.e., 1/.50). Similarly, a Reg. T account holding $10,000 in cash may purchase and hold on an intra-day basis $40,000 in securities given IB’s default intra-day maintenance margin requirement of 25%, which translates to buying power of 4:1 (i.e., 1/.25).
In the case of a Portfolio Margin account, greater leverage is available although, as the name suggests, the amount is highly dependent upon the make-up of the portfolio. Here, the requirement on individual stocks (initial = maintenance) generally ranges from 15% - 30%, translating to buying power of between 6.67 – 3.33:1. As the margin rate under this methodology can change daily as it considers risk factors such as the observed volatility of each stock and concentration, portfolios comprised of low-volatility stocks and which are diversified in nature tend to receive the most favorable margin treatment (e.g., higher buying power).
In addition to the cash examples above, buying power may be provided to securities held in the margin account, with the leverage dependent upon the loan value of the securities and the amount of funds, if any, borrowed to purchase them. Take, for example, an account which holds $10,000 in securities which are fully paid (i.e., no margin loan). Using the Reg. T initial margin requirement of 50%, these securities would have a loan value of $5,000 (= $10,000 * (1 - 0.50)) which, using that same initial requirement providing buying power of 2:1, could be applied to purchase and hold overnight an additional $10,000 of securities. Similarly, an account holding $10,000 in securities and a $1,000 margin loan (i.e., net liquidating equity of $9,000), has a remaining equity loan value of $4,000 which could be applied to purchase and hold overnight an additional $8,000 of securities. The same principles would hold true in a Portfolio Margin account, albeit with a potentially different level of buying power.
Finally, while the concept of buying power applies to the purchase of assets such as stocks, bonds, funds and forex, it does not translate in the same manner to derivatives. Most securities derivatives (e.g., short options and single stock futures) are not assets but rather contingent liabilities and long options, while an asset, are short-term in nature, considered a wasting asset and therefore generally have no loan value. The margin requirement on short options, therefore, is not based upon a percentage of the option premium value, but rather determined on the underlying stock as if the option were assigned (under Reg. T) or by estimating the cost to repurchase the option given adverse market changes (under Portfolio Margining).
