I think he's pullin' your leg. IB is 4:1 intraday on stocks. Pretty sure its a fed thing too. Reg-T or something like that. I'm 100% sure you don't get 6X at any brokers on stocks.
I never did the math on futures though intraday... I always have more than enough, but they will shut you out overnight. That's happened to me on RB.
EDIT:
IB's website:
Determining Buying Power
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).
Portfolio Margin
H I G H L I G H T S
Under SEC approved Portfolio Margin rules and using our real-time margin system, Interactive Brokers customers are able in certain cases to increase their leverage beyond Reg T margin requirements. For decades margin requirements for securities (stocks, options, and single stock futures) accounts have been calculated under a Reg T rules-based policy. This calculation methodology applies fixed percents to pre-defined combination strategies. With Portfolio Margin, margin is based on the largest potential loss found by valuing the portfolio over a range of underlying prices, and volatilities. It is available for all US stocks, OCC stock and index options, and US single stock futures positions. At this time, it is not available for US commodities futures and futures options, US bonds, or forex positions, but US regulatory bodies may consider inclusion of these products at a future date.
Portfolio or risk based margin has been employed for many years in both commodities and many non-US securities markets, with great success. Depending on the composition of your trading account, Portfolio Margin can require less margin than under Reg T rules, which translates to greater leverage. Trading with greater leverage involves greater risk of loss. Of course for some accounts with risky positions, Portfolio Margin can require more margin than under Reg T. That’s the point of Portfolio Margin, for margin requirements to more accurately reflect the actual risk of the positions in an account. It should be noted that for customers with highly concentrated accounts, Portfolio Margin may calculate higher margin requirements under Reg T. One of the main goals of Portfolio Margin is to reflect the lower risk inherent in a balanced portfolio of hedged positions. Conversely, Portfolio Margin must assess proportionately larger margin for accounts whose positions are concentrated in a relatively small number of stocks.
ortfolio Margin Eligibility
An account must have at least USD 100,000 (or USD equivalent) in Net Liquidation Value to be eligible for a Portfolio Margin account. Existing customers may apply for a Portfolio Margin account through
Account Management/Trading Permissions at any time and your account will be upgraded upon approval. New Interactive Brokers customers can apply for a Portfolio Margin account during the registration system process. It should be noted that if your account drops below USD 100,000 you will be restricted from doing any margin-increasing trades. Therefore if you do not intend to maintain at least USD 100,000 in your account, you should not apply for a Portfolio Margin account.
New IB customer accounts requesting Portfolio Margin will have Reg T rules in effect until their accounts are approved for Portfolio Margin. This may take up to 2 business days (under normal business circumstances) after initial account approval. Existing IB customer accounts will also need to be approved and this may take up to two business days after the request. Both new and existing IB customers will receive an email confirming approval.
Those institutions who wish to execute some trades away from Interactive Brokers and use us as a prime broker will be required to maintain at least USD 500,000 (or USD equivalent).