Senior executives at major Wall Street banks signaled that the trading boom behind record second-quarter profits is losing momentum. Bank of America CEO Brian Moynihan expects third-quarter sales and trading revenue to be flat year over year, while JPMorgan co-President Doug Petno forecasts a seasonal sequential decline but still sees teens percentage year-over-year growth. Citigroup projects mid-single-digit growth, and Goldman Sachs CEO David Solomon expects strong equities performance but slightly softer FICC revenue. Combined equities revenue at JPMorgan, Goldman Sachs, Citigroup and Bank of America rose 72% year over year to $19.3 billion in the second quarter, fueled by AI-related stock demand, speculative Asian semiconductor trading and SpaceX's mega-IPO. Executives said longer-term demand for prime brokerage and structured financing remains strong, while third-quarter results will test their guidance.