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Top 8 S&P 500 Performers Year-to-Date (And What’s Driving Them)
By The Smart Investor  •  July 22, 2026
Unless you’ve been living under a rock, you’ll know artificial intelligence (AI) has driven the market in 2026. But here’s the thing: the year’s biggest winners weren’t the chip designers everyone talks about. The S&P 500 has returned roughly 11.36% year-to-date (YTD). Respectable. Pedestrian, though, next to the eight names below. Sandisk (NASDAQ: SNDK) led the pack with a staggering 707.11% return. Behind it: Dell Technologies (NYSE: DELL) at 245.54%, Micron (NASDAQ: MU) at 243.12%, Western Digital (NASDAQ: WDC) at 238.18%, Seagate (NASDAQ: STX) at 230.56%, Intel (NASDAQ: INTC) at 197.67%, Marvell (NASDAQ: MRVL) at 177.49%, and AMD (NASDAQ: AMD) at 160.50%. Eight winners. One common thread. Let’s dig in.

The real AI bottleneck nobody watched

Everyone knows AI needs chips to think. Far fewer investors realised it also needs somewhere to store what it produces and remembers. That’s where five of these eight names live: memory and storage. And here’s the kicker. This isn’t a story about revenue promises; it’s about pricing power....
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By The Smart Investor
The Smart Investor is co-founded by David Kuo, Joanna Sng, and Chin Hui Leong. The company was formed in late 2019 from the ashes of the Motley Fool Singapore. The Smart Investor believes that everybody can learn how to invest, smartly. We aim to educate people on how to invest smartly by providing investing education, stock commentary and market coverage for Singapore and around the world.
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