$SNDK closed at $1,792 Friday — up 11% from $1,614.

The move? Index inclusion. Sandisk joins the S&P 100 Monday, replacing Colgate. Index funds rebalance ahead of the effective date, so the buying pressure hits now. Mechanical, predictable.

But the real story is AI NAND demand and tight supply. Q4 revenue jumped 372% to $8.97B. Memory names are still riding a supercycle.

Short-term catalyst: index flows.
Long-term thesis: AI storage infrastructure.

Not financial advice.