One thing good about Interactive Brokers is that it is extra insurance on top of SIPC coverage of 500k. However, this extra insurance is only up to an extra 150m (See link at bottom). Given that IBKR is such a large broker, can the extra 150m be enough to cover all its clients? A few hedge funds and institutional investors would have blow through this 150m limit. Is this concern valid?
https://www.interactivebrokers.com/en/index.php?f=ibgStrength&p=acc&ns=T
Customer securities accounts at Interactive Brokers LLC are protected by the Securities Investor Protection Corporation ("SIPC") for a maximum coverage of $500,000 (with a cash sublimit of $250,000) and under Interactive Brokers LLC's excess SIPC policy with certain underwriters at Lloyd's of London 1 for up to an additional $30 million (with a cash sublimit of $900,000) subject to an aggregate limit of $150 million.
https://www.interactivebrokers.com/en/index.php?f=ibgStrength&p=acc&ns=T
Customer securities accounts at Interactive Brokers LLC are protected by the Securities Investor Protection Corporation ("SIPC") for a maximum coverage of $500,000 (with a cash sublimit of $250,000) and under Interactive Brokers LLC's excess SIPC policy with certain underwriters at Lloyd's of London 1 for up to an additional $30 million (with a cash sublimit of $900,000) subject to an aggregate limit of $150 million.