Top bank expert warns U.S. stocks could dip 5%-10%

The S&P 500, a basket of 500 big U.S. companies, could fall 5% to 10% if trading in government IOUs stays rocky, Morgan Stanley expert Mike Wilson said, MarketWatch reported Sept. 29, 2026. Wilson, the bank's top U.S. stocks watcher, said a short breather could be healthy. He still expects stocks to rise. He spoke on Bloomberg Television.