OptionsHouse (now part of ) does not currently publish a standalone "white paper" on buying power, but their requirements for stocks and options follow standard Regulation T and specific house rules for margin. How Buying Power is Calculated
If you have $10,000 in equity, your stock buying power is $20,000. optionshouse buying power
: Buying power is strictly limited to your settled funds . OptionsHouse (now part of ) does not currently
: Accounts flagged as Pattern Day Traders (PDT) can access up to 4:1 leverage for intraday stock trades. 000 in equity
: These typically provide 2:1 leverage for stock positions held overnight.
Unlike stocks, long options (buying calls or puts) are non-marginable and must be paid for in full. What is Options buying power? - Public FAQ