So I've been watching this Sandisk story unfold and it's genuinely wild. The stock is up 1,500% since spinning off from Western Digital last year, and it just keeps running. More than sixfold in 2025 alone. At this point, people are asking if it's too late to get in, but Wall Street analysts are actually saying there's still room to run.

What's driving this? AI infrastructure demand created a massive memory chip shortage. Prices for memory jumped 50% in Q4 2025 and are expected to climb another 40-50% through early 2026. Sandisk is perfectly positioned to capitalize on this. The company reported absolutely exceptional results in early January - revenue jumped 61% to $3 billion and earnings per share exploded 404% to $6.20. Their guidance for the next quarter is even more aggressive, projecting $4.6 billion in revenue.

Here's what's interesting from a market perspective. Sandisk is actually gaining share in NAND flash memory. They're the fifth-largest player but they picked up 2 percentage points of market share while Samsung and SK Hynix actually lost ground. That's significant because it shows this isn't just a rising tide lifting all boats - Sandisk is executing better than competitors. Part of that comes from their joint venture with Kioxia and their vertical integration, which gives them advantages in optimizing performance that most other suppliers can't match.

Wall Street's consensus target is $690 per share, implying about 20% upside from current levels around $576. Some analysts are even more bullish, with targets as high as $1,000. The crazy part is these targets got raised after the earnings beat. Before the report, the median target was only $400, so analysts are still catching up to what's actually happening.

The valuation math is interesting too. Wall Street expects earnings to grow 156% annually through mid-2027, which makes the current 80x earnings multiple look reasonable for that growth rate. That's the bull case. The bear case is that semiconductor cycles are real. Eventually the memory shortage ends, supply catches up, and multiples compress hard. Nobody knows if that happens in months or over a year, but when it does, the downside could be sharp.

So is it a buy? Depends on your risk tolerance. If you can stomach potential volatility and you believe the AI infrastructure buildout extends well into 2026 and beyond, there's an argument. But this is definitely a momentum play with cyclical risk built in. Wall Street seems to think there's still value here, but they also just got blindsided by how fast this moved.