Sandisk Has Gone Vertical. I Still Want to Talk About the Downside

Sandisk is up an amount this year that I am almost embarrassed to type. It hit a fresh all time high last week and Morgan Stanley lifted its target again. Beautiful chart. Now let me be the annoying one.

The run nobody saw coming

The stock closed up over 11% on its last session to a new record near the $2,184 level, riding the same AI memory wave lifting the whole group. The bull case is simple and it is working, NAND and memory pricing is strong, AI storage demand is real, and momentum money has piled in.

The bull case is real

I want to be fair. This is not a meme with no business behind it. The memory upcycle is genuine, the supply discipline is genuine, and Sandisk has operating leverage that prints serious numbers when pricing cooperates. If the cycle runs another few quarters, today's price can look reasonable in hindsight.

But here is what keeps me cautious

A stock that goes up several hundred percent in a year is, by definition, a stock where a lot of good news is already in the price. Momentum names do not give back ground politely, they gap. The same flows that pushed it vertical can reverse in a week with no warning, and the people who bought the last 30% are the ones who get hurt.

Position sizing matters more than ever

I am not telling anyone to short a freight train. I am saying if you are up big here, taking some off the table is not bearish, it is just adult. Let the house play with profits. Do not let a winner turn into a lesson.