NEW YORK, March 5, 2026, 16:46 (EST)
- Sandisk is set to join the Bloomberg 500, Bloomberg Indices announced. The addition takes effect March 12, as part of the March reconstitution.
- Sandisk shares have seen sharp swings this week, with investors cycling between memory and storage stocks.
- Spun out of Western Digital, the flash-memory maker has become a key name in AI-fueled storage trades.
Bloomberg Indices plans to add Sandisk Corporation of Delaware (SNDK.O) to the Bloomberg 500 (B500) index ahead of the market open on March 12, according to the index provider’s Thursday announcement. The B500 tracks 500 top U.S. companies, sorted by free-float market value. Bloomberg puts the benchmark’s total market cap at $58.19 trillion.
When an index adds a stock, benchmark-tracking funds typically have to snap up shares—sometimes in a hurry. For a storage-sector name that’s already drawn plenty of attention, the timing lands awkwardly, but could turn out to be a plus.
Sandisk finished Thursday down 5.6% at $565.55, giving back Wednesday’s 5.9% jump, according to Investing.com data. On Tuesday, shares dropped 8.7% and ended at $565.41, capping a stretch of sharp intraday moves.
It was a jumpy session across the board. U.S. stocks took a sharp tumble Tuesday morning, with nerves over the Middle East conflict stretching on, but clawed much of it back by the close, Investopedia reported. “Those aren’t moves that suggest investors believe this will have a significant long-term impact on equity markets,” said David Miller, CIO at Catalyst Funds. Investopedia
Memory and storage stocks took a hit together in the selloff. Sandisk finished the day down over 8% on Tuesday. Micron (MU.O) and Western Digital (WDC.O) each shed more than 7%, according to Nasdaq.com. Seagate (STX.O) also landed in the group of decliners.
Sandisk makes and markets storage gear powered by NAND flash memory, the chips found in SSDs, cards, and more. Reuters notes the company’s reach extends across cloud, client, and consumer segments.
Western Digital has been pulling back from its stake. Back in February, Reuters reported the company lined up a $3.17 billion sale of part of its Sandisk holding and signaled it would unload what’s left gradually, aiming to reduce debt.
Sandisk made headlines back in January when it projected both profit and revenue for the quarter topping Wall Street expectations, thanks in part to robust AI-fueled storage demand and a fresh, extended supply deal, according to Reuters.
The usual script — “index add equals higher stock” — doesn’t always hold up, especially in these markets. “Any ceasefire for now looks like a remote possibility,” said Lindsay James, investment strategist at Quilter, this week after conflict jitters sent stocks lower. Reuters
Sandisk is set to enter the B500 as part of a reshuffle that’s bringing in ten additional firms, according to Bloomberg Indices. Investors finally have a firm date to watch. What happens in the market around then could tell the real story.
