AI stocks and other momentum bets kept the market afloat on Wednesday.

The S&P 500 was flat, trading sideways for much of the session so far. The Dow is down 108 points, or 0.3%. The Nasdaq Composite was rising 0.5%.

Things would be way worse for the S&P 500 if not for big gains from the tech, communication services, and consumer discretionary sectors. Only 118 stocks in the index were rising. The rest of the major S&P sectors were down, with health care, materials, and utilities all falling at least 1%.