SanDisk leads S&P 500 with 558% gain in 2026 so far

Twelve stocks in the S&P 500 have more than doubled in value so far this year. SanDisk isn’t just doubling. It’s up as much as 558% year-to-date, making it the index’s runaway leader and one of the most dramatic single-stock rallies in recent memory.

The company, which trades on the Nasdaq under the ticker SNDK, has seen its share price climb to around $990, with some consensus estimates tracking it even higher. For context, a 558% gain means that every $10,000 invested at the start of the year would now be worth roughly $65,800.

What’s actually driving this

SanDisk reported Q2 fiscal year 2026 revenue of $3.03 billion, a 61% increase compared to the same period a year earlier. The company’s projected full-year revenue for fiscal 2026 sits at $10.45 billion, which would represent a 42% jump year-over-year.

The wave, in this case, is NAND flash memory. As AI models get larger and more data-hungry, the demand for high-capacity, high-performance storage has surged. BofA analyst Mohan has pointed to tight NAND supply as a critical factor in SanDisk’s ability to capitalize on AI-driven storage demand. When supply is constrained and demand is exploding, pricing power follows, translating directly into expanding profit margins.

The Nasdaq-100 catalyst

On April 20, 2026, SanDisk was added to the Nasdaq-100 index. When a stock joins a major index, every fund that tracks that index must buy shares to match their benchmark, creating a wave of forced buying that pushes prices higher.

SanDisk’s past-year return, stretching back 12 months, sits at approximately 2,500%. The Nasdaq-100 inclusion poured gasoline on a fire that was already burning hot.

Where analysts see it going

Bank of America has a price target of $1,080, suggesting meaningful upside from the stock’s recent trading level near $990. The MarketBeat consensus target is more aggressive, sitting at $1,562, implying the stock still has roughly 58% further to climb from current levels.