U.S. stock indexes are rising toward more records Wednesday after tech companies talked up how much artificial intelligence is boosting their results. The S&P 500 rose 0.3% in afternoon trading to add to what looks to be one of its best years of the millennium.

U.S. stocks tiptoed to more records amid a mixed Tuesday of trading, tacking a touch more onto what’s already been a stellar year so far. The S&P 500 edged up by 2 points, or less than 0.1%, to set an all-time high for the 55th time this year.

Asian shares mostly rose Tuesday, after technology stocks pulled Wall Street to another record finish. The S&P 500 rose 0.2% Monday from the previous session's all-time high to post a record for the 54th time this year.