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SanDisk SNDK

US equityMarket cap rank #54Data storage stock
$1,769.00
−$47.57 (-2.62%)
Market open · Sep 24, 1:10 pm ET
After hours $1,818.50 +0.11%
Open$1,785.70
Prev close$1,816.57
Day range$1,745.87 – $1,802.99
Volume5.23M
Market cap$258.90B
P/E (TTM)24.0
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership81.2%+4.96 pts vs. prior quarter
Institutions holding2,028-9 vs. prior quarter
Insider trades (recent)0 buys / 7 sellsNet selling
Short interest4.10% of floatDays to cover 1.0 · as of 31 Aug 2026
Short-sale volume share9.6%5-day average of daily volume

Short-sale volume as % of daily volume

4%10%16%23%Aug '26Sep '26Sep '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$561.69M (7 inflow days, 13 outflow days).

Largest holders

  • Vanguard Capital Management, LLC7.18%
  • BlackRock7.03%
  • FMR5.08%
  • Jane Street Group, LLC5.06%
  • State Street Global Advisors4.05%

By investor type

  • Mutual Fund56.68%
  • Private Company9.51%
  • Hedge Fund5.94%
  • Public Company5.57%
  • Sovereign Wealth Fund1.41%
  • Government Pension Fund1.31%
  • Individual/Insider0.48%
  • Insurance Company0.26%
Institutional holders2,028
Institutional ownership81.2%

Insider activity

Total transactions15
Bought0
Sold7

Short interest

Report dateShares short% of floatDays to cover
31 Aug 2026 5,996,105 4.1% 1.0
14 Aug 2026 7,676,558 5.3% 1.0
31 Jul 2026 6,823,953 4.6% 1.0
15 Jul 2026 7,857,690 5.3% 1.0
30 Jun 2026 7,197,631 4.9% 1.0
15 Jun 2026 10,911,306 7.4% 1.0
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