Goldman Sachs, JPMorgan and Morgan Stanley are dominating the AI stock boom. Here's their edge

Goldman Sachs, JPMorgan Chase, and Morgan Stanley have dominated the AI-driven stock trading boom in 2026, generating $52 billion in equities revenue through September, fueled by increased lending to hedge funds and relaxed capital rules. The Big Three banks' prime brokerage services have been pivotal in supporting hedge funds' leveraged bets on AI-related stocks, driving record profits in equities financing.