Micron and 28 Other S&P 500 Stocks Hit 52-Week Highs on Wednesday. These 12 Are Doing It Again Today.

Micron stock has had an incredible 2025. (Kyle Green/Bloomberg)

The S&P 500 closed at a record high on Wednesday, but only 28 of the index’s stocks closed at 52-week highs that day. Of those, only 12 are solidly on pace for another today.

Micron Technology isn’t one of them. The stock has gained 241% in 2025, making it one of 2025’s big winners as investors finally realized that AI requires huge amounts of its memory chips. Its stock was up 1.7%, at $291.67 in premarket trading on Friday as investors looked set to press those bets heading into the end of the year, but was off 0.4% in morning trading.

Lam Research, however, was up 1.1% at $179.28, making it the group’s top gainer. The stock, up 146% in 2025, has been another big winner this year. Lam Research provides the tools that do the “etching” for memory chips, among other services, essentially allowing Micron and others to do what they do.

Other stocks that made the list include Assurant, Bank of America, Chubb, Capital One, CRH, KLA, Morgan Stanley, Nasdaq, Charles Schwab, and Tapestry.

Why do we care? Because momentum is one of the best-performing factors in the market. Stocks that are strong typically stay strong, so by identifying the shares that are trading new 52-week highs, investors can find stocks that have the potential to keep going. For short-term traders, it’s a way to find ideas to trade that day. For long-term investors, it can be a tool to help populate a watchlist.

Write to Ben Levisohn at ben.levisohn@barrons.com