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 from a year earlier, 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 (fixed income, currencies and commodities) revenue. The second quarter was fueled by AI-related stock demand, speculative Asian semiconductor trading and SpaceX's mega-IPO, sending combined equities revenue at four major banks up 72% year-over-year to $19.3 billion. Executives maintain that demand for prime brokerage (services supporting institutional trading) and structured financing remains strong over the longer term. Third-quarter results for the period ending September 30 begin next month, providing a test of the guidance.