股票收益提升计划推出的目的是什么？
股票收益提升计划可供客户通过允许IBKR将其账户内原本闲置的证券头寸（即全额支付和超额保证金证券）出借给第三方来赚取额外收益。参与此计划的客户会收到用以确保股票在借贷终止时顺利归还的现金抵押，并且在股票借出的每一天都能就现金抵押获取利息。

什么是全额支付和超额保证金证券？
全额支付证券是客户账户中全款付清的证券。超额保证金证券是虽然没有全款付清但本身市场价值已超过保证金贷款余额的140%的证券。

客户股票收益提升计划的借出交易收益如何计算？
客户借出股票的收益取决于场外证券借贷市场的借贷利率。借出的股票不同，出借的日期不同，都会对借贷利率造成很大差异。通常，IBKR会按自己借出股票所得金额的大约50%向参与计划的客户支付现金抵押利息。例如，假设IBKR借出$10,000美元股票，年化收益15%，向借出客户的账户存入了$10,000美元的现金抵押。则IBKR对现金抵押支付的日利息通常会是$2.08美元。

借贷交易的现金抵押金额如何确定？
证券借贷的现金抵押金额采用行业惯例确定，即用股票的收盘价乘以特定百分比（通常为102-105%），然后向上取整到最近的美元/分。每个币种的行业惯例不同。例如，借出100股收盘价为$59.24美元的美元计价股票，现金抵押应为$6,100 ($59.24 * 1.02 = $60.4248；取整到$61，再乘以100）。下表为各个币种的行业惯例：

更多信息，请参见KB1146。

退出IBKR股票收益提升计划或卖出/转账通过此计划借出的股票会对利息造成什么影响？

交易日的下一个工作日（T+1）停止计息。对于转账或退出计划，利息也会在发起转账或退出计划的下一个工作日停止计算。

参加IBKR股票收益提升计划有什么资格要求？

*参加的账户必须是保证金账户或满足上述现金账户最低资产要求的现金账户。

盈透证券日本、盈透证券卢森堡、盈透证券澳大利亚和盈透证券印度公司的客户不能参加此计划。账户开在IB LLC下的日本和印度客户可以参加。

此外，满足上方条件的财务顾问客户账户、全披露介绍经纪商客户和综合经纪商可以参加此计划。如果是财务顾问和全披露介绍经纪商，必须由客户自己签署协议。综合经纪商由经纪商签署协议。

IRA账户可以参加股票收益提升计划吗？
可以。

IRA账户由盈透证券资产管理公司（Interactive Brokers Asset Management）管理的账户分区可以参加股票收益提升计划吗？
不能。

英国SIPP账户可以参加股票收益提升计划吗？
不能。

如何申请参加IBKR股票收益提升计划？ 
符合条件并且想参加股票收益提升计划的客户可以选择设置>账户设置。点击“交易许可”旁的齿轮图标。勾选页面顶部“交易计划”下的“股票收益提升”复选框。点击“继续”，然后根据要求填写协议/披露。

如果参加计划的现金账户资产跌破最低资产要求$50,000美元会怎么样？
现金账户只有在申请参加计划当时必须满足这一最低资产要求。之后资产跌破此要求并不会对现有借贷造成任何影响，也不影响您继续借出股票。

如何终止股票收益提升计划？

想退出股票收益提升计划的客户可以登录账户管理，选择设置>账户设置。点击“交易许可”旁的齿轮图标。取消勾选“交易计划”下的“股票收益提升”复选框。点击“继续”，然后根据要求填写协议/披露。退出申请通常会在当天日末处理。

如果一个账户参加了计划然后又退出，那么该账户多久可以重新参加计划？
退出计划后，账户需要等待90天才能重新参加。

哪些证券头寸可以出借？

*市政债券不适用。

借出IPO后在二级市场交易的股票有什么限制吗？
只要IBKR没有参与此证券的承销就没有限制。

IBKR如何确定可以借出的股票数量？
第一步是确定IBKR有保证金扣押权从而可以在没有客户参与的情况下通过股票收益提升计划借出的证券的价值（如有）。根据规定，通过保证金贷款借钱给客户购买证券的经纪商可以将该客户的证券借出或用作抵押，金额最高不超过贷款金额的140%。例如，如果客户现金余额为$50,000美元，买入市场价值为$100,000美元的证券，则贷款金额为$50,000美元，那么经纪商对$70,000美元（$50,000的140%）的证券享有扣押权。客户持有的证券超出这一金额的部分被称为超额保证金证券（此例子中为$30,000），需要记在隔离账户，除非客户授权IBKR通过股票收益提升计划将其借出。

计算贷款金额首先要将所有非美元计价的现金余额转换成美元，然后减去股票卖空所得（转换成美元）。如果结果为负数，则我们最高可抵押此数目的140%。此外，商品账户段中持有的现金余额和现货金属和差价合约相关现金不纳入考虑范围。

例1：客户在基础货币为美元的账户内持有100,000欧元，欧元兑美元汇率为1.40。客户买入价值$112,000美元（相当于80,000欧元）的美元计价股票。由于转换成美元后现金余额为正数，所有证券被视为全额支付。

例2：客户持有80,000美元、多头持有价值$100,000美元的美元计价股票并且做空了价值$100,000美元的美元计价股票。总计$28,000美元的多头证券被视为保证金证券，剩余的$72,000美元为超额保证金证券。计算方法是用现金余额减去卖空所得（$80,000 - $100,000），所得贷款金额再乘以140% ($20,000 * 1.4 = $28,000)

IBKR会把所有符合条件的股票都借出去吗？
不保证账户内所有符合条件的股票都能通过股票收益提升计划借出去，因为某些证券可能没有利率有利的市场，或者IBKR无法接入有意愿的借用方所在的市场，也有可能IBKR不想借出您的股票。

通过股票收益提升计划借出股票是否都要以100为单位？
不是。只要是整股都可以，但是借给第三方的时候我们只以100为倍数借出。这样，如果有第三方需要借用100股，就可能发生我们从一个客户那里借出75股、从另一个客户那里借出25股的情况。

如果可供借出的股票超过借用需求，如何在多个客户之间分配借出份额？
如果我们股票收益提升计划的参与者可用以借出的股票数量大于借用需求，则借出份额将按比例分配（如，可供借出的数量为20,000，需求只有10,000的情况下，每个客户可以借出其所持股数的一半）

股票是只借给其它IBKR客户还是也会借给其它第三方？
股票可以借给任何对手方，并不仅限于其他IBKR客户。

股票收益提升计划的参与者可以自行决定哪些股票IBKR可以借出吗？
不能。此计划完全由IBKR管理，IBKR在确定了自己因保证金贷款扣押权可以借出的证券后，可自行决定哪些全额支付或超额保证金证券可以借出，并发起借贷。

通过股票收益提升计划借出去的证券其卖出是否会受到限制？
借出去的股票可随时卖出，没有任何限制。卖出交易的结算并不需要股票及时归还，卖出收益会按正常结算日记入客户的账户。此外，借贷会于证券卖出的下一个工作日开盘终止。

客户就通过股票收益提升计划借出去的股票沽出持保看张期权还能享受持保看涨期权保证金待遇吗？ 
可以。由于借出去的股票其盈亏风险仍然在借出方身上，借出股票不会对相关保证金要求造成任何影响。

借出去的股票由于看涨期权被行权或看跌期权行权被交付会怎么样？
借贷将于平仓或减仓操作（交易、被行权、行权）的T+1日终止。

借出去的股票被暂停交易会怎么样？
暂停交易对股票借出没有直接影响，只要IBKR能继续借出该等股票，则无论股票是否被暂停交易，借贷都可以继续进行。

借贷股票的现金抵押可以划至商品账户段冲抵保证金和/或应付行情变化吗？
不能。股票借贷的现金抵押不会对保证金或融资造成任何影响。

计划参与者发起保证金贷款或提高现有贷款金额会怎么样？
如果客户有全额支付的证券通过股票收益提升计划借出，之后又发起保证金贷款，则不属于超额保证金证券的部分将被终止借贷。同样，如果客户有超额保证金证券通过此计划借出，之后又要增加现有保证金贷款，则不属于超额保证金证券的部分也将被终止借贷。

什么情况下股票借贷会被终止？
发生以下情况，股票借贷将被自动终止：

- 客户选择退出计划
- 转账股票 
- 以股票作抵押借款
- 卖出股票
- 看涨期权被行权/看跌期权行权
- 账户关闭

股票收益提升计划的参与者是否会收到被借出股票的股息？
通过股票收益提升计划借出的股票通常会在除息日前召回以获取股息、避免股息替代支付。

股票收益提升计划的参与者是否对被借出的股票保有投票权？

不是。如果登记日或投票、给予同意或采取其它行动的截止日期在贷款期内，则证券的借用者有权就证券相关事项进行投票或决断。

股票收益提升计划的参与者是否能就被借出的股票获得权利、权证和分拆股份？

可以。被借出股票分配的任何权利、权证和分拆股份都将属于证券的借出方。

股票借贷在活动报表中如何呈现？

借贷抵押、借出在外的股数、活动和收益在以下6个报表区域中反映：

1. 现金详情 – 详细列出了期初现金抵押余额、借贷活动导致的净变化（如果发起新的借贷则为正；如果股票归还则为负）和期末现金抵押余额。

2. 净股票头寸总结 – 按股票详细列出了在IBKR持有的总股数、借入的股数、借出的股数和净股数（=在IBKR持有的总股数 + 借入的股数 - 借出的股数）。 

3. IB管理的证券借出 – 对通过股票收益提升计划借出的股票按股票列出了借出的股数以及利率（%）。 

4. IB管理的证券借出活动 – 详细列出了各证券的借贷活动，包括归还份额分配（即终止的借贷）；新借出份额分配（即新发起的借贷）；股数；净利率（%）；客户抵押金额及其利率（%）。 

5. IB管理的证券借出活动利息详情 – 按每笔借出活动详细列出了IBKR赚取的利率（%）；IBKR赚取的收益（为IBKR从该笔借出活动赚取的总收益，等于{抵押金额 * 利率}/360）；客户抵押的利率（为IBKR从该笔借出活动赚取的收益的一半）以及支付给客户的利息（为客户的现金抵押赚取的利息收入）

注：此部分只有在报表期内客户赚取的应计利息超过1美元的情况下才会显示。   

6. 应计利息 – 此处利息收入列为应计利息，与任何其它应计利息一样处理（累积计算，但只有超过$1美元才会显示并按月过账到现金）。年末申报时，该笔利息收入将上报表格1099（美国纳税人）。

As a US registered broker-dealer, Interactive Brokers LLC (“IBKR”) is subject to Regulation SHO, a collection of US Securities & Exchange Commission rules relating to short-selling of equity securities. Rule 204 of Regulation SHO places certain requirements on clearing brokers in the event that they fail to deliver securities on settlement date in connection with a sale of those securities. This can happen for a variety of commonplace operational reasons, and does not indicate a problem at the clearing broker. In certain circumstances, Rule 204 may require a clearing broker to not permit shorting a security for a certain period of time (unless sufficient shares of that security are pre-borrowed to cover the order marked as a short sale).

Rule 204(a) requires that a clearing broker, if it fails to deliver on a sale trade on the settlement date, must closeout its fail by buying or borrowing the relevant security a specified number of trading days later (depending on whether the sale was long or short), prior to the opening of the regular trading session on that day.

Rule 204(b) provides that if the clearing broker does not closeout its fail in accordance with Rule 204(a), the broker may not accept short sale orders from its customers in the relevant stock (the stock in which the unclosed-out fail has occurred), or place such orders for its own account, unless it has first borrowed the shares of the relevant stock to cover the new short sale order. This is colloquially known in the securities industry as being in the “penalty box” for the relevant security. This restriction exists until the clearing broker has purchased shares in the amount of the unclosed-out fail, and that purchase has settled.

Any broker that executes trades through that clearing broker, and clears and settles those trades through that clearing broker, is subject to the same Rule 204(b) restriction, as is any broker that executes away from that clearing broker, but intends to clear and settle those trades through the clearing broker.

Rule 204(c) requires clearing brokers to notify brokers from whom they receive trades for clearance and settlement of when they become subject to a short-sale restriction under Rule 204(b), and when that restriction ends. This is so that the notified brokers can avoid executing trades away from the clearing broker that are not permitted under the clearing broker’s short-sale restriction. If you have received a notice from IBKR regarding Rule 204(c), it generally means that IBKR's books and records show that you are an introducing broker or dealer that clears and settles trades through IBKR, and that also has the capability (or your client has such capability) of executing trades at away brokers or dealers for settlement through IBKR. You should not execute any short-sale order at an away broker-dealer in a security which we have notified you is shortsale restricted, unless you have first arranged to pre-borrow sufficient shares of that security through IBKR. For more information on pre-borrowing, please click here or contact us.

The above is a general description of Rule 204 of Regulation SHO, to aid our broker-dealer clients in understanding IBKR's obligations and why certain stocks may become unshortable at certain times irrespective of their availability to be borrowed. It is not legal advice and should not be used as such.

Introduction
While account holders are always at risk of having a short security position closed out if IB is unable to borrow shares at settlement of the initial trade or bought in if the trade settles and the shares are recalled by the lender thereafter, certain securities have characteristics which may increase the likelihood of these events occurring. Two examples are leveraged Exchange Traded Funds (ETF) and Exchange Traded Notes (ETN), where the supply of shares available to borrow can be influenced by a number of factors not found with shares of common stock. An overview of these securities and these factors is provided below.


Overview
As background, an ETF is a security organized as a pooled investment vehicle that can offer diversified exposure or track a particular index by investing in stocks, bonds, commodities, currencies, options or a blend of assets. An ETF is similar to a mutual fund in that each share of an ETF represents an undivided interest in the underlying assets of the fund. However, unlike a mutual fund in which orders are only processed at a price determined at the end of the day, ETF shares are repriced and trade throughout the day on an exchange. To balance the supply and demand of shares and ensure that secondary market prices approximate the market value of the underlying assets, ETF issuers allow Authorized Participants (typically large broker-dealers) to create and redeem ETF shares in large blocks, typically 50,000 to 100,000 shares. While many ETFs invest solely in securities, others use debt or derivatives to track and/or magnify exposure to an index. The ProShares Ultra VIX Short-Term Futures ETF ( symbol: UVXY) is one example of a widely traded leveraged ETF.

ETNs are also securities that are repriced and trade throughout the day on an exchange and are designed to provide investors with a return that corresponds to an index. Unlike ETFs, however, ETNs are unsecured debt instruments and do not represent an interest in an underlying pool of assets. They do not pay interest like traditional debit instruments, but rather a promise to pay a specific return that typically corresponds to an index or benchmark. The Barclays iPath® S&P 500 VIX Short-Term Futures™ ETN (symbol: VXX) is one example of a widely traded ETN.

The supply of shares available to borrow in order to initiate or maintain a short sale position may be less stable for certain leveraged ETFs and ETNs, including UVXY and VXX, due to the following factors:

- Limited Authorized Participants: The number of Authorized Participants willing to issue ETFs, particularly those that invest in derivatives (e.g., futures contracts, swap agreements and forward contracts) rather than securities and seek performance equal to a multiple (i.e., 2x) or an inverse multiple (i.e., -2x) of a benchmark may be limited. Moreover, Authorized Participants have no legal obligation to create shares and may elect not to do so to minimize their exposure as a dealer. 

- No Authorized Participants: As ETN shares represent credit instruments, the supply of such shares is determined solely by the issuing financial institution and Authorized Participants are not involved with the creation or redemption of shares. The ETN issuer typically reserves the right to limit, restrict or stop selling additional shares at any time.

- Limited Holding Period: Certain leveraged ETFs and ETNs seek to match the performance of a benchmark index for a single day rather than an extended period. They are principally used by institutional investors and other traders looking to obtain short-term exposure to an asset class, hedge other investments in a portfolio or invest as a way to gain interim exposure to a particular market while gradually investing directly in that market. These factors can result in a higher rate of turnover and less stability of share inventory available to lend for short sales. 

- Margin Considerations: Shares made available for lending to short sellers often originate from brokers who maintain a lien on the shares as they’ve financed the purchase of the shares on behalf of clients via margin loans. Clients purchasing shares using borrowed funds are subject to regulatory margin requirements, compliance to which depends in part upon the value of the shares supporting the loan. As certain leveraged  ETFs/ETNs are designed to provide returns in multiples of their benchmark, the inherent volatility of these products may diminish clients’ ability to maintain the position and, in turn, the broker’s ability to lend the shares.