Risk Based Margin Considerations

  LLC Risk Based (i.e. Portfolio Margin)  Non-LLC Risk Based Margin
$110,000 initial value requirement Yes N/A
Maintain equity above $100,000 Yes N/A
Full options trading approval Yes N/A
PDT         Yes N/A
Stress testing Yes Yes
Dynamic House Scanning Charges (TOMS) ¹ Yes Yes
Shifts in option Implied Volatility (IV)  Yes Yes
A $0.375 multiplied by the index per contract minimum is computed (Only applied to Portfolio Margin eligble products) Yes Yes
Initial margin will be 110% of Maintenance Margin (US securities only) Yes Yes
Initial margin will be 125% of Maintenance Margin (Non-US securities) Yes Yes
Extreme Price Scans (options on wings?)  Yes Yes
Large Position Charge (A position which is 1% or more of shares outstanding)  Yes Yes
Days to Liquidate (A large position in relation to the average daily trading volume, which may result in higher initial margin requirements Yes Yes
Global Concentration Charge (2 riskiest position stressed +/-30% remaining assets +/-5%) Yes Yes
Singleton Margin Method for Small Cap Stocks (Stress Test which simulates a price change reflective of a $500 million USD in market capitalization)² Yes Yes
Singleton Margin Method for stocks domiciled in China (Stress Test which simulates a price change reflective of a $1.5 billion USD in market capitalization)² Yes Yes
Default Singleton Margin Method (Stress Test which simulates a price change +30% and down *25%)² Yes Yes
Singleton Margin Method for HK Real Estate Stocks (Stress test  +/-50%)² Yes Yes

1  Dynamic House Scanning Charges are available only on select exchanges (Asian Exchanges and MEXDER)
2  IBKR will calculate the potential loss for each stock and its derivates by subjecting them to a stress test. The requirement for the stock (and its derivatives) which projects the greatest loss in the above scenario will be compared to what would otherwise be the aggregate portfolio margin requirement, and the greater of the two will be the margin requirement for the portfolio