SANDISK CORP SNDK
COM · Common Stock · CUSIP 80004C200 · ISIN US80004C2008
American semiconductor company - memory and storage technologies
- SectorTechnology
- IndustryComputer Storage Devices
- HeadquartersMilpitas, CA
- Founded1988
- Websitesandisk.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($7.7m this quarter). Holder counts are more reliable. Shares outstanding: 145.8m as of 2025-08-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $45.36. Options: 19 managers hold calls ($145.5m notional), 22 hold puts ($102.3m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2025 | 422 |
| Q2 2025 | 418 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $0 | $0 | — |
| Q4 2024 | $0 | $0 | — |
| Q1 2025 | $175.3m | $102.3m | 0.58 |
| Q2 2025 | $145.5m | $102.3m | 0.70 |
Biggest buyers
| FIL Ltd | Added | +3.8m |
| Madison Avenue Partners, LP | New | +3.6m |
| VANGUARD GROUP INC | Added | +2.9m |
| Balyasny Asset Management L.P. | New | +2.5m |
| BlackRock, Inc. | Added | +2.4m |
| VICTORY CAPITAL MANAGEMENT INC | Added | +2.2m |
| DNB Asset Management AS | Added | +2.2m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +1.6m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | +1.4m |
| FMR LLC | Added | +1.2m |
Biggest sellers
| SAMLYN CAPITAL, LLC | Sold out | -1.2m |
| JPMORGAN CHASE & CO | Reduced | -903.2k |
| Capitolis Liquid Global Markets LLC | Sold out | -800.0k |
| KEYSTONE INVESTORS PTE LTD | Sold out | -766.8k |
| NEUBERGER BERMAN GROUP LLC | Reduced | -723.4k |
| AMF Tjanstepension AB | Sold out | -625.1k |
| Atalan Capital Partners, LP | Sold out | -511.7k |
| Allianz Asset Management GmbH | Sold out | -448.6k |
| Freestone Grove Partners LP | Reduced | -398.7k |
| Artemis Investment Management LLP | Sold out | -341.5k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $39.6m872.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $22.4m494.5k shares |
| Walleye Trading LLC | Added | $19.2m423.8k shares |
| Balyasny Asset Management L.P. | New | $12.5m275.0k shares |
| NOMURA HOLDINGS INC | Unchanged | $8.2m180.0k shares |
| PEAK6 LLC | Added | $7.1m155.7k shares |
| BARCLAYS PLC | Unchanged | $5.8m128.5k shares |
| SIMPLEX TRADING, LLC | Added | $5.5m121.9k shares |
| JANE STREET GROUP, LLC | Reduced | $4.7m102.6k shares |
| WOLVERINE TRADING, LLC | Added | $4.0m85.5k shares |
Biggest puts
| CITADEL ADVISORS LLC | Reduced | $18.1m400.2k shares |
| JANE STREET GROUP, LLC | Reduced | $15.2m334.6k shares |
| Walleye Trading LLC | Added | $15.1m333.7k shares |
| CSS LLC/IL | Unchanged | $15.0m330.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $9.0m198.8k shares |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | New | $7.3m160.0k shares |
| PEAK6 LLC | Added | $5.0m110.4k shares |
| HBK INVESTMENTS L P | Added | $3.4m75.0k shares |
| BANK OF MONTREAL /CAN/ | New | $2.3m50.0k shares |
| IMC-Chicago, LLC | New | $1.6m36.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +1.7 pts · filed 2026-10-27 | 7.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 7.2% |
| FMR LLC 13G · institution -3.4 pts · filed 2026-08-06 | 5.3% |
| JANE STREET GROUP, LLC 13G · passive investor new · filed 2026-08-05 | 5.0% |
Fell to 5% or below in the last year: WESTERN DIGITAL CORP (0.7%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.06% of their portfolio | 21.8m $988.4m | Added +1.2m |
| BlackRock, Inc. 0.01% of their portfolio | 16.8m $760.3m | Added +2.4m |
| VANGUARD GROUP INC 0.01% of their portfolio | 16.6m $750.8m | Added +2.9m |
| DNB Asset Management AS 1.34% of their portfolio | 7.1m $322.4m | Added +2.2m |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.03% of their portfolio | 5.7m $256.4m | Added +1.6m |
| Slate Path Capital LP 3.70% of their portfolio | 4.7m $214.9m | Added +144.3k |
| FIL Ltd 0.18% of their portfolio | 4.5m $205.6m | Added +3.8m |
| STATE STREET CORP 0.01% of their portfolio | 4.3m $193.9m | Added +678.1k |
| Madison Avenue Partners, LP 10.81% of their portfolio | 3.6m $161.9m | New |
| UBS Group AG 0.03% of their portfolio | 3.4m $152.0m | Reduced -74.1k |
| Balyasny Asset Management L.P. 0.26% of their portfolio | 2.5m $112.9m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.4m $108.5m | Added +456.4k |
| VICTORY CAPITAL MANAGEMENT INC 0.07% of their portfolio | 2.2m $101.5m | Added +2.2m |
| CITADEL ADVISORS LLC 0.08% of their portfolio | 2.1m $97.4m | Added +528.9k |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 1.8m $83.3m | Added +492.6k |
| MORGAN STANLEY 0.01% of their portfolio | 1.8m $83.1m | Added +199.0k |
| NORGES BANK 0.01% of their portfolio | 1.8m $79.4m | Added +299.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.6m $70.8m | Reduced -903.2k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 1.5m $70.0m | Added +196.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.4m $65.4m | Added +157.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.04% of their portfolio | 1.4m $62.5m | New |
| PARNASSUS INVESTMENTS, LLC 0.11% of their portfolio | 1.0m $46.2m | Added +267.8k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 981.2k $44.5m | Added +961.9k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 935.7k $42.4m | Added +188.0k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 913.3k $41.4m | Added +238.8k |
| Ghisallo Capital Management LLC 1.10% of their portfolio | 905.0k $41.0m | New |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 836.6k $38.0m | Reduced -13.3k |
| AQR CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 822.4k $37.3m | Added +761.5k |
| Burkehill Global Management, LP 2.68% of their portfolio | 800.0k $36.3m | New |
| Elliott Investment Management L.P. 0.28% of their portfolio | 750.0k $34.0m | Unchanged |
| DEPRINCE RACE & ZOLLO INC 0.69% of their portfolio | 731.8k $33.2m | Added +371.9k |
| Invesco Ltd. 0.01% of their portfolio | 714.3k $32.4m | Added +92.6k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 666.4k $30.2m | Added +94.6k |
| Legal & General Group Plc 0.01% of their portfolio | 562.8k $25.5m | Reduced -78.7k |
| Schonfeld Strategic Advisors LLC 0.19% of their portfolio | 560.1k $25.4m | Added +23.2k |
| Maple Rock Capital Partners Inc. 1.25% of their portfolio | 552.0k $25.0m | Added +303.6k |
| SOROS FUND MANAGEMENT LLC 0.41% of their portfolio | 526.8k $23.9m | New |
| SEVEN GRAND MANAGERS, LLC 2.72% of their portfolio | 500.0k $22.7m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 497.1k $22.5m | Reduced -230.1k |
| ExodusPoint Capital Management, LP 0.27% of their portfolio | 485.6k $22.0m | New |
| Public Sector Pension Investment Board 0.09% of their portfolio | 460.7k $20.9m | Added +95.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 413.1k $18.7m | New |
| MARSHALL WACE, LLP 0.02% of their portfolio | 401.7k $18.2m | Added +289.2k |
| BTG Pactual Asset Management US LLC 2.44% of their portfolio | 400.0k $18.1m | New |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 389.9k $17.7m | Reduced -57.6k |
| KINGDON CAPITAL MANAGEMENT, L.L.C. 3.24% of their portfolio | 370.0k $16.8m | New |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.07% of their portfolio | 369.2k $16.7m | Added +281.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 351.7k $16.0m | Reduced -118.8k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 337.5k $15.3m | Added +103.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 332.3k $15.1m | Reduced -92.1k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 323.9k $14.7m | Reduced -723.4k |
| Talos Eurisko Asset Management LP 3.42% of their portfolio | 314.6k $14.3m | New |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 314.2k $14.3m | Added +42.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio | 311.2k $14.1m | Reduced -35.2k |
| LSV ASSET MANAGEMENT 0.03% of their portfolio | 299.9k $13.6m | Reduced -14.3k |
| Freestone Grove Partners LP 0.10% of their portfolio | 298.7k $13.5m | Reduced -398.7k |
| PRIMECAP MANAGEMENT CO/CA/ 0.01% of their portfolio | 283.4k $12.9m | Reduced -96.8k |
| HBK INVESTMENTS L P 0.22% of their portfolio | 274.1k $12.4m | Added +65.0k |
| Swiss National Bank 0.01% of their portfolio | 262.8k $11.9m | Added +39.9k |
| Amundi 0.00% of their portfolio | 252.6k $11.7m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 234.9k $10.7m | Added +195.5k |
| Squarepoint Ops LLC 0.02% of their portfolio | 226.3k $10.3m | Added +21.0k |
| Holocene Advisors, LP 0.02% of their portfolio | 215.4k $9.8m | New |
| Jain Global LLC 0.14% of their portfolio | 204.9k $9.3m | Added +163.7k |
| Nuveen, LLC 0.00% of their portfolio | 203.5k $9.2m | Reduced -18.6k |
| JUPITER ASSET MANAGEMENT LTD 0.07% of their portfolio | 193.0k $8.8m | New |
| Skandinaviska Enskilda Banken AB (publ) 0.04% of their portfolio | 188.8k $8.6m | Added +85.0k |
| Zweig-DiMenna Associates LLC 0.86% of their portfolio | 185.0k $8.4m | Added +142.5k |
| State of Alaska, Department of Revenue 0.09% of their portfolio | 183.4k $8.3m | Added +119.6k |
| GENDELL JEFFREY L 0.20% of their portfolio | 164.8k $7.5m | Added +129.8k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 162.9k $7.4m | Added +75.4k |
| California Public Employees Retirement System 0.00% of their portfolio | 162.9k $7.4m | Reduced -12.3k |
| SORA INVESTORS LLC 0.66% of their portfolio | 160.5k $7.3m | Reduced -61.6k |
| Maytus Capital Management, LLC 1.32% of their portfolio | 158.0k $7.2m | Reduced -35.6k |
| Longaeva Partners L.P. 1.63% of their portfolio | 150.0k $6.8m | New |
| Polymer Capital Management (HK) LTD 1.02% of their portfolio | 144.1k $6.5m | Reduced -32.5k |
| CITIGROUP INC 0.00% of their portfolio | 139.5k $6.3m | Reduced -49.1k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 132.4k $6.0m | Added +21.6k |
| 683 Capital Management, LLC 0.61% of their portfolio | 132.0k $6.0m | Reduced -8.0k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 130.5k $5.9m | Reduced -22.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 128.9k $5.8m | Added +22.3k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 122.2k $5.5m | Added +4.4k |
| CAXTON ASSOCIATES LLP 0.14% of their portfolio | 122.2k $5.5m | New |
| ALGERT GLOBAL LLC 0.11% of their portfolio | 116.0k $5.3m | New |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.02% of their portfolio | 110.6k $5.0m | New |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 101.1k $4.6m | Added +680 |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 99.4k $4.5m | Added +14.7k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 98.8k $4.5m | Added +22.9k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 98.0k $4.4m | Reduced -201.3k |
| BARCLAYS PLC 0.00% of their portfolio | 97.1k $4.4m | Added +41.8k |
| PEAK6 LLC 0.08% of their portfolio | 97.1k $4.4m | Added +86.2k |
| CastleKnight Management LP 0.28% of their portfolio | 94.6k $4.3m | New |
| Verition Fund Management LLC 0.02% of their portfolio | 93.1k $4.2m | Added +77.2k |
| Jefferies Financial Group Inc. 0.07% of their portfolio | 91.5k $4.2m | New |
| Symmetry Investments LP 0.31% of their portfolio | 82.0k $3.7m | Added +53.1k |
| WINTON GROUP Ltd 0.18% of their portfolio | 79.1k $3.6m | New |
| Boussard & Gavaudan Investment Management LLP 0.47% of their portfolio | 78.6k $3.6m | New |
| Clearline Capital LP 0.31% of their portfolio | 78.3k $3.6m | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 74.0k $3.4m | Reduced -10.2k |
| Quantbot Technologies LP 0.09% of their portfolio | 73.4k $3.3m | Added +60.1k |