New York, Jan 23, 2026, 16:16 EST — After-hours
Sandisk Corp (SNDK.OQ) shares ended Friday down 5.8%, closing at $474 after moving between $463.40 and $506.00 during a volatile session. Trading volume reached roughly 20.2 million shares.
Memory and storage stocks remain active amid forecasts that tight supply and AI-driven demand will continue to push prices up, despite warnings from some chipmakers about climbing component costs. This dynamic has boosted Sandisk and similar firms, drawing them deeper into the larger AI hardware sector. 1
New regulatory filings dropped more detail in the last two days. An amended Schedule 13G revealed BlackRock owned 8,825,007 Sandisk shares, representing 6.0% of the company as of Dec. 31. The filing, which is mandatory for holdings over 5%, noted the stake was picked up through normal business activities. 2
A separate Form 4 filing revealed that Chief Legal Officer and Secretary Bernard Shek sold 34 shares at $453.12 on Jan. 20. The sale was a tax-withholding transaction related to vesting, leaving him with 33,852 shares. 3
On Thursday, former director Kimberly Alexy filed a Form 144, signaling her intent to sell up to 1,367 shares valued around $690,335 via Morgan Stanley on Nasdaq. Form 144 is required for proposed sales under Rule 144, which covers restricted or control stock resales. 4
Memory and storage stocks closed unevenly. Western Digital dropped 2.8%, Seagate edged down 0.1%, and Micron inched up 0.5%.
Sandisk manufactures NAND flash-based storage, which are the memory chips found in solid-state drives, as well as removable cards and various other products, according to data from a Reuters profile. 5
In February 2025, the company started trading on Nasdaq with the ticker SNDK following its spin-off from Western Digital. 6
The memory sector is cyclical, and expectations can shift quickly. Should pricing power weaken or demand from data centers slow down, the stock’s recent swings could reverse sharply.
Sandisk will release its fiscal second-quarter results on January 29, with an earnings call set for 4:30 p.m. ET. 7
