SanDisk Stock Joins the S&P 100 Today After a…
Updated 21 September 2026. SanDisk (SNDK): $1,791.82 at Friday’s close, up 10.99% on the day and about 18% across a three-day run from $1,519.97 on 16 September. After-hours: $1,798.00. Today SanDisk becomes an S&P 100 company, joining alongside Dell Technologies, Palo Alto Networks and Arista Networks. Verdict: the index move is already in the price
