SANDISK CORP (SNDK)
Institutional ownership reported to the SEC as of Q2 2026, across 7 quarters.
Institutions report 110,603,263 shares against 146,419,001 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $40.4B incl. $39.6B options CALL+PUT | 321,773 | 3.14% | 6q | -67.4%-$83.4B |
| JANE STREET GROUP, LLC | $25.3B incl. $22.7B options CALL+PUT | 1,157,795 | 2.10% | 6q | -35.2%-$13.8B |
| BlackRock, Inc. | $23.4B | 10,295,300 | 0.35% | 6q | -1.0%-$245.9M |
| CITADEL ADVISORS LLC | $22.2B incl. $22.1B options CALL+PUT | 67,432 | 2.54% | 6q | -88.9%-$178.0B |
| VANGUARD CAPITAL MANAGEMENT LLC | $22.0B | 9,668,255 | 0.47% | 2q | +1.5%+$323.2M |
| GOLDMAN SACHS GROUP INC | $19.7B incl. $16.4B options CALL+PUT | 1,448,361 | 1.71% | 6q | -29.1%-$8.1B |
| IMC-Chicago, LLC | $18.3B incl. $18.2B options CALL+PUT | 34,584 | 4.38% | 3q | -76.3%-$58.9B |
| FMR LLC | $17.9B | 7,861,665 | 0.78% | 6q | -41.3%-$12.6B |
| STATE STREET CORP | $13.5B | 5,927,453 | 0.40% | 6q | +6.3%+$804.0M |
| Invesco Ltd. | $12.8B | 5,610,346 | 1.01% | 6q | +381.5%+$10.1B |
| GEODE CAPITAL MANAGEMENT, LLC | $8.2B | 3,591,499 | 0.43% | 6q | -14.7%-$1.4B |
| JPMORGAN CHASE & CO | $8.1B incl. $45.1M options PUT | 3,941,436 | 0.45% | 6q | +175.8%+$5.2B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $8.0B | 3,515,937 | 0.36% | 2q | -1.7%-$137.7M |
| Clear Street Group Inc. | $6.8B incl. $227.4K options CALL | 2,983,392 | 17.17% | 2q | +143.6%+$4.0B |
| Situational Awareness LP | $5.7B | 2,495,344 | 28.03% | 4q | +118.9%+$3.1B |
| MORGAN STANLEY | $5.5B | 2,400,851 | 0.29% | 6q | -15.4%-$997.4M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $4.9B | 2,169,423 | 2.19% | 5q | -23.2%-$1.5B |
| NORGES BANK | $4.7B | 2,055,094 | 0.47% | 4q | -6.0%-$297.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $4.0B | 1,741,577 | 0.53% | 6q | HELD |
| PRICE T ROWE ASSOCIATES INC /MD/ | $3.6B | 1,599,211 | 0.36% | 6q | +38.4%+$1.0B |
| NORTHERN TRUST CORP | $2.9B | 1,274,137 | 0.34% | 6q | +3.2%+$89.7M |
| Assenagon Asset Management S.A. | $2.8B | 1,243,698 | 1.76% | new | NEW |
| SG Americas Securities, LLC | $2.7B incl. $13.7M options CALL+PUT | 1,189,503 | 1.52% | 4q | +25.9%+$559.9M |
| Marex Group Ltd | $2.7B incl. $2.0B options CALL+PUT | 299,792 | 11.43% | 2q | -45.9%-$2.3B |
| SIMPLEX TRADING, LLC | $2.6B incl. $2.6B options CALL+PUT | 4,518 | 1.50% | 6q | +190.0%+$1.7B |
| BNP PARIBAS FINANCIAL MARKETS | $2.5B incl. $214.0M options CALL+PUT | 992,504 | 0.86% | 6q | -20.7%-$643.9M |
| WELLINGTON MANAGEMENT GROUP LLP | $2.4B | 1,066,886 | 0.42% | 3q | +71.2%+$1.0B |
| GROUP ONE TRADING LLC | $2.1B incl. $2.1B options CALL+PUT | 1,815 | 2.96% | 6q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $1.9B | 850,387 | 0.43% | 2q | +2.6%+$49.1M |
| Nuveen, LLC | $1.9B | 848,714 | 0.46% | 6q | +85.6%+$890.1M |
| WELLS FARGO & COMPANY/MN | $1.9B | 839,305 | 0.31% | 6q | +171.5%+$1.2B |
| D. E. Shaw & Co., Inc. | $1.9B incl. $573.9M options CALL+PUT | 561,911 | 0.88% | 6q | -52.1%-$2.0B |
| UBS Group AG | $1.8B incl. $421.4M options CALL+PUT | 626,651 | 0.23% | 6q | -12.1%-$254.8M |
| TORONTO DOMINION BANK | $1.8B incl. $759.7M options PUT | 449,306 | 2.06% | 3q | -8.1%-$156.6M |
| Amundi | $1.7B | 745,141 | 0.41% | 5q | -14.6%-$289.9M |
| FRANKLIN RESOURCES INC | $1.7B | 742,309 | 0.37% | 4q | +147.3%+$1.0B |
| Belvedere Trading LLC | $1.7B incl. $1.6B options CALL+PUT | 54,196 | 1.93% | 4q | +755.5%+$1.5B |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $1.7B | 726,722 | 0.30% | 6q | +57.4%+$602.4M |
| Bank of New York Mellon Corp | $1.6B | 713,081 | 0.27% | 6q | -1.5%-$25.3M |
| BANK OF AMERICA CORP /DE/ | $1.6B | 688,253 | 0.10% | 6q | -31.2%-$708.4M |
| Walleye Trading LLC | $1.4B CALL+PUT | options only | 1.61% | 6q | OPTIONS |
| Hudson Bay Capital Management LP | $1.4B incl. $693.0M options PUT | 306,118 | 3.77% | new | NEW |
| EXCHANGE TRADED CONCEPTS, LLC | $1.4B | 610,115 | 6.34% | 3q | +15237.2%+$1.4B |
| Whale Rock Capital Management LLC | $1.4B | 596,545 | 10.89% | 3q | -25.4%-$461.7M |
| MILLENNIUM MANAGEMENT LLC | $1.4B incl. $523.0M options CALL+PUT | 366,129 | 0.49% | 6q | -67.9%-$2.9B |
| DEUTSCHE BANK AG\ | $1.3B | 593,382 | 0.39% | 6q | -42.2%-$986.0M |
| Legal & General Group Plc | $1.2B | 544,041 | 0.26% | 6q | +48.7%+$405.3M |
| DIMENSIONAL FUND ADVISORS LP | $1.2B | 539,130 | 0.22% | 6q | -38.5%-$766.9M |
| Polar Capital Holdings Plc | $1.1B | 492,817 | 2.65% | 4q | -43.8%-$873.6M |
| JENNISON ASSOCIATES LLC | $1.1B | 472,125 | 0.64% | new | NEW |
| BARCLAYS PLC | $1.0B incl. $186.0M options CALL+PUT | 375,005 | 0.20% | 6q | -15.1%-$184.9M |
| AQR CAPITAL MANAGEMENT LLC | $965.3M | 445,251 | 0.34% | 6q | -35.8%-$538.8M |
| VOYA INVESTMENT MANAGEMENT LLC | $960.2M | 422,658 | 0.83% | 6q | -29.3%-$397.9M |
| Qube Research & Technologies Ltd | $931.4M | 409,650 | 0.87% | 3q | -51.5%-$988.2M |
| Value Aligned Research Advisors, LLC | $880.1M incl. $171.2M options CALL | 311,782 | 2.19% | 2q | +196.4%+$583.2M |
| VANGUARD ASSET MANAGEMENT, Ltd | $782.5M | 344,141 | 0.53% | 2q | +14.5%+$99.0M |
| AMERIPRISE FINANCIAL INC | $768.4M | 337,958 | 0.16% | 6q | +183.1%+$497.0M |
| CITIGROUP INC | $751.3M incl. $79.6M options CALL | 295,439 | 0.25% | 6q | +12.6%+$83.8M |
| GF FUND MANAGEMENT CO. LTD. | $740.5M | 325,682 | 8.88% | 4q | -1.0%-$7.2M |
| Vanguard Global Advisers, LLC | $728.4M | 320,340 | 0.34% | 2q | -1.0%-$7.0M |
| California Public Employees Retirement System | $707.7M | 311,247 | 0.40% | 6q | +33.7%+$178.4M |
| VICTORY CAPITAL MANAGEMENT INC | $706.4M | 310,668 | 0.40% | 6q | -22.9%-$209.3M |
| Swiss National Bank | $662.7M | 291,462 | 0.35% | 6q | +5.1%+$32.0M |
| PEAK6 LLC | $647.6M incl. $647.6M options CALL+PUT | 1 | 1.33% | 6q | -100.0%-$14.0T |
| Squarepoint Ops LLC | $617.3M incl. $135.7M options CALL+PUT | 211,783 | 0.68% | 6q | -24.0%-$194.6M |
| ROYAL BANK OF CANADA | $607.5M incl. $51.2M options CALL | 244,665 | 0.09% | 6q | +53.0%+$210.5M |
| Daiwa Securities Group Inc. | $595.5M incl. $261.5M options PUT | 146,908 | 1.16% | 3q | +802.4%+$529.5M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $574.9M | 249,714 | 0.18% | 5q | +2111.0%+$548.9M |
| TWO SIGMA INVESTMENTS, LP | $571.6M incl. $22.1M options CALL+PUT | 241,675 | 0.41% | 4q | -68.3%-$1.2B |
| Amanah Holdings Trust | $568.4M | 250,000 | 33.38% | 3q | HELD |
| WT Asset Management Ltd | $561.5M | 246,939 | 11.11% | 4q | -70.2%-$1.3B |
| Castle Hook Partners LP | $540.2M | 237,578 | 2.48% | 4q | -14.2%-$89.3M |
| HSBC HOLDINGS PLC | $498.4M | 220,574 | 0.21% | 6q | -62.4%-$828.0M |
| RK Capital Management, LLC/FL | $494.3M incl. $247.2M options PUT | 108,700 | 4.57% | new | NEW |
| RHUMBLINE ADVISERS | $488.2M | 214,727 | 0.37% | 6q | -1.8%-$8.8M |
| AustralianSuper Pty Ltd | $479.5M | 210,902 | 2.08% | 2q | +34.5%+$123.1M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $477.5M | 209,990 | 0.26% | 6q | +5.4%+$24.6M |
| MARSHALL WACE, LLP | $475.7M | 209,217 | 0.38% | 6q | -62.9%-$808.0M |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | $472.0M | 207,587 | 19.60% | 2q | +13.0%+$54.3M |
| HRT FINANCIAL LP | $466.8M incl. $196.2M options OPT | 205,315 | 0.85% | 3q | -79.0%-$1.8B |
| BANK OF MONTREAL /CAN/ | $435.8M | 191,665 | 0.14% | 6q | +83.9%+$198.8M |
| NEUBERGER BERMAN GROUP LLC | $434.2M | 191,390 | 0.29% | 6q | -17.4%-$91.5M |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $432.9M incl. $79.6M options PUT | 155,402 | 7.61% | 5q | -16.2%-$83.8M |
| PRINCIPAL FINANCIAL GROUP INC | $431.8M | 189,923 | 0.21% | 6q | +14.2%+$53.5M |
| TUDOR INVESTMENT CORP ET AL | $417.2M incl. $233.5M options CALL+PUT | 80,795 | 0.58% | 4q | +22.0%+$75.3M |
| FIRST TRUST ADVISORS LP | $413.8M | 182,005 | 0.24% | 6q | +35.6%+$108.7M |
| Point72 Asset Management, L.P. | $411.5M incl. $298.5M options CALL+PUT | 49,692 | 0.45% | 3q | -86.8%-$2.7B |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $380.4M | 167,299 | 0.35% | 6q | +3.4%+$12.6M |
| NATIONAL BANK OF CANADA /FI/ | $378.7M incl. $371.1M options PUT | 3,338 | 0.27% | 2q | -15.5%-$69.4M |
| ProShare Advisors LLC | $376.9M | 165,744 | 0.54% | 4q | +490.5%+$313.0M |
| RAYMOND JAMES FINANCIAL INC | $363.0M | 159,638 | 0.10% | 6q | +45.6%+$113.8M |
| Jupiter Topco LLC | $353.7M | 155,696 | 0.14% | new | FIRST |
| SANDS CAPITAL MANAGEMENT, LLC | $348.1M | 153,093 | 1.29% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $343.6M | 151,119 | 0.43% | 6q | +103.7%+$174.9M |
| GENDELL JEFFREY L | $341.1M | 150,000 | 3.01% | 6q | HELD |
| AIGH Capital Management LLC | $338.8M | 149,000 | 21.35% | 4q | -25.5%-$116.0M |
| PRUDENTIAL FINANCIAL INC | $338.1M | 148,689 | 0.37% | 6q | -14.7%-$58.4M |
| CANTOR FITZGERALD, L. P. | $337.0M incl. $204.6M options PUT | 58,202 | 1.82% | 2q | +194.5%+$222.6M |
| Mirae Asset Global Investments Co., Ltd. | $335.1M | 147,376 | 0.50% | 6q | +149.0%+$200.5M |
| BANK OF NOVA SCOTIA | $329.3M | 144,848 | 0.50% | 4q | -25.3%-$111.6M |
Q2 2026 in brief
In Q2 2026, 1,848 managers that file Form 13F reported holding Sandisk Corp (SNDK), $386.5B in all, or about 75% of the shares outstanding. 755 managers opened a position and 103 sold out completely, against 1,196 holders the quarter before. Largest holders: Susquehanna International Group, Llp, Jane Street Group, Llc and Blackrock, Inc.. Largest new positions: Assenagon Asset Management S.A. ($2.8B), Hudson Bay Capital Management Lp ($1.4B) and Jennison Associates Llc ($1.1B).
Q2 2026 is the latest quarter whose 13F deadline has passed. A 13F shows long US stock positions at quarter end, filed up to 45 days later; an adviser and a sub-adviser can both report the same shares.
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-27 | 13G/A | BlackRock, Inc. | 7.7% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-16 | 2026-09-10 | Directors or officers departed or appointed | filing |
| 2026-09-11 | 2026-09-09 | Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Goeckeler David | Chairman & CEO | Sold | 33,841 | $53.3M ×15 |
| 2026-09-14 | Goeckeler David | Chairman & CEO | Sold | 33,838 | $51.7M ×13 |
| 2026-09-03 | Ilkbahar Alper | EVP & Chief Technology Officer | Sold | 4,712 | $7.3M ×30 |
| 2026-09-08 | Shek Bernard | Chief Legal Officer & Secty | Sold | 2,308 | $4.1M |
| 2026-06-01 | Ilkbahar Alper | EVP, Chief Technology Officer | Sold | 2,000 | $3.5M ×3 |
| 2026-05-12 | Pokorny Michael | VP, Chief Accounting Officer | Sold | 2,446 | $3.5M |
| 2026-09-15 | Visoso Luis Felipe | EVP & CFO | Sold | 1,000 | $1.6M |
| 2026-07-01 | Shek Bernard | Chief Legal Officer & Secty | Sold | 600 | $1.3M |
| 2026-06-03 | Shek Bernard | Chief Legal Officer & Secty | Sold | 600 | $1.0M |
| 2026-10-01 | Shek Bernard | Chief Legal Officer and Secty | Sold | 600 | $1.0M |
| 2026-09-01 | Shek Bernard | Chief Legal Officer & Secty | Sold | 600 | $915.4K |
| 2026-05-08 | Sayiner Necip | Director | Sold | 579 | $870.3K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 652 | $8.3B | 4,974,882 | 106 | 281 | 178 | 0.5% |
| Q2 2026 | 1,848 | $386.5B | 110,603,263 | 746 | 526 | 458 | 35.4% |
| Q1 2026 | 1,196 | $94.0B | 113,340,484 | 501 | 329 | 286 | 23.8% |
| Q4 2025 | 746 | $31.7B | 120,791,093 | 261 | 205 | 182 | 9.6% |
| Q3 2025 | 530 | $15.6B | 126,558,701 | 184 | 144 | 119 | 8.7% |
| Q2 2025 | 416 | $6.5B | 138,761,216 | 94 | 135 | 123 | 3.8% |
| Q1 2025 | 419 | $5.5B | 109,498,738 | 419 | 0 | 0 | 5.1% |