Who owns Sandisk (SNDK)?

125 holders named in SEC filings declare between 58.8% and 73.6% of Sandisk's shares outstanding, as of Sep 17, 2026. The largest are Vanguard (10.0%), BlackRock (7.0%) and Fidelity (FMR) (5.4%); the five largest hold 31.5% together. Another 1,694 institutions hold small positions worth 5.9%. At least 20.4% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 13.6% and sold 17.5% of the shares, a net sale of 3.9%; 677 opened a position, 494 added, 451 reduced and 83 sold out. Biggest buyers: Invesco (+4.4M shares) and JPMorgan (+2.5M shares). Biggest sellers: Fidelity (FMR) (-5.5M) and Renaissance Technologies (-794,588). Schedule 13D/G filings since Mar 31, 2026: JANE STREET GROUP, LLC crossed 5% (5.1%) on Jul 30, 2026 and FMR LLC cut its stake to 5.4% on Jun 30, 2026. Over time, 1,782 managers declared Sandisk in their 13F for Q2 2026, against 407 for Q1 2025: together at most 74.1% of the shares outstanding, against 75.5%.

Sandisk institutional ownership over time

From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.

More on Sandisk

• Sandisk stock (SNDK): price and overview
• Sandisk dividend
• Sandisk financials
• Sandisk technicals and short interest

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