Who owns Sandisk (SNDK)
Which tracked institutional funds hold SNDK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SNDK company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on SNDK is one-sided between 2025-Q4 and 2026-Q1: 684 added or opened and 86 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SNDK’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.4% of its own reported 13F book, while the median holder sizes it at 0.4% of theirs — a 0.0pp gap the other way — the median holder sizes SNDK more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in SNDK divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 1171 tracked filers holding SNDK, 832 increased or opened the position and 355 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SNDK between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 240
- VANGUARD CAPITAL MANAGEMENT LLC$6.1B
- VANGUARD PORTFOLIO MANAGEMENT LLC$2.3B
- Clear Street Group Inc.$778M
- Situational Awareness Partners LP$724M
- Anther Capital Ltd$565M
- VANGUARD FIDUCIARY TRUST CO$527M
Full exits 38
- VANGUARD GROUP INC$4.0B
- TWO SIGMA ADVISERS, LP$194M
- FengHe Fund Management Pte. Ltd.$102M
- HBK INVESTMENTS L P$56M
- Capitolis Liquid Global Markets LLC$24M
- Clearline Capital LP$17M
Largest adds
- BlackRock, Inc.$3.8B
- FMR LLC$3.4B
- STATE STREET CORP$2.3B
- GEODE CAPITAL MANAGEMENT, LLC$1.8B
- GOLDMAN SACHS GROUP INC$1.1B
- MORGAN STANLEY$1.1B
Largest trims
- NORGES BANK$450M
- Trivest Advisors Ltd$104M
- SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC$58M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$31M
- Evergreen Quality Fund GP, Ltd.$31M
- ALLIANCEBERNSTEIN L.P.$28M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 10,295,300 | $23.4B | 18.0% | 2026-Q2 |
| FMR LLC trimmed | 7,861,665 | $17.9B | 13.8% | 2026-Q2 |
| STATE STREET CORP added | 5,927,453 | $13.5B | 10.4% | 2026-Q2 |
| Invesco Ltd. added | 5,610,346 | $12.8B | 9.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 9,526,119 | $6.1B | 4.7% | 2026-Q1 |
| NORGES BANK added | 2,055,094 | $4.7B | 3.6% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,599,211 | $3.6B | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 4,212,772 | $2.7B | 2.1% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,066,886 | $2.4B | 1.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 3,576,487 | $2.3B | 1.8% | 2026-Q1 |
| MORGAN STANLEY trimmed | 2,839,492 | $1.8B | 1.4% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 2,823,970 | $1.8B | 1.4% | 2026-Q1 |
| Whale Rock Capital Management LLC trimmed | 596,545 | $1.4B | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,042,540 | $1.3B | 1.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 561,911 | $1.3B | 1.0% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 1,787,655 | $1.1B | 0.9% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,744,286 | $1.1B | 0.9% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 445,251 | $965M | 0.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 366,129 | $832M | 0.6% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 1,428,862 | $818M | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,251,179 | $795M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,234,681 | $784M | 0.6% | 2026-Q1 |
| Clear Street Group Inc. new | 1,224,583 | $778M | 0.6% | 2026-Q1 |
| Situational Awareness LP added | 1,140,119 | $724M | 0.6% | 2026-Q1 |
| Situational Awareness Partners LP new | 1,140,119 | $724M | 0.6% | 2026-Q1 |
| Hudson Bay Capital Management LP new | 306,118 | $696M | 0.5% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 1,027,012 | $653M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 999,802 | $635M | 0.5% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 986,344 | $627M | 0.5% | 2026-Q1 |
| SG Americas Securities, LLC added | 944,503 | $600M | 0.5% | 2026-Q1 |
| HRT FINANCIAL LP added | 892,172 | $567M | 0.4% | 2026-Q1 |
| Anther Capital Ltd new | 889,568 | $565M | 0.4% | 2026-Q1 |
| Polar Capital Holdings Plc trimmed | 877,032 | $557M | 0.4% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 876,910 | $557M | 0.4% | 2026-Q1 |
| Amundi added | 872,632 | $554M | 0.4% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 241,675 | $550M | 0.4% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 844,249 | $536M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 828,780 | $527M | 0.4% | 2026-Q1 |
| WT Asset Management Ltd added | 828,778 | $527M | 0.4% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 209,217 | $476M | 0.4% | 2026-Q2 |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT added | 207,587 | $472M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 724,226 | $460M | 0.4% | 2026-Q1 |
| UBS Group AG added | 713,138 | $453M | 0.3% | 2026-Q1 |
| Madison Avenue Partners, LP trimmed | 619,010 | $393M | 0.3% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 597,811 | $380M | 0.3% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 587,014 | $370M | 0.3% | 2026-Q1 |
| Marex Group plc added | 554,438 | $352M | 0.3% | 2026-Q1 |
| SANDS CAPITAL MANAGEMENT, LLC new | 153,093 | $348M | 0.3% | 2026-Q2 |
| TORONTO DOMINION BANK added | 488,803 | $311M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 461,787 | $293M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 457,231 | $290M | 0.2% | 2026-Q1 |
| BARCLAYS PLC added | 441,747 | $281M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 402,714 | $256M | 0.2% | 2026-Q1 |
| Legal & General Group Plc added | 365,750 | $232M | 0.2% | 2026-Q1 |
| Evergreen Quality Fund GP, Ltd. trimmed | 353,862 | $225M | 0.2% | 2026-Q1 |
| GF FUND MANAGEMENT CO. LTD. trimmed | 328,862 | $209M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 323,416 | $205M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 87,932 | $200M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 309,105 | $196M | 0.2% | 2026-Q1 |
| Holocene Advisors, LP added | 305,770 | $194M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 300,587 | $191M | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 300,137 | $191M | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd trimmed | 296,400 | $188M | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 80,795 | $184M | 0.1% | 2026-Q2 |
| Appaloosa LP new | 281,250 | $179M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 278,562 | $177M | 0.1% | 2026-Q1 |
| Swiss National Bank added | 277,402 | $176M | 0.1% | 2026-Q1 |
| Castle Hook Partners LP added | 276,858 | $176M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 262,494 | $167M | 0.1% | 2026-Q1 |
| Amanah Holdings Trust | 250,000 | $159M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 67,432 | $153M | 0.1% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 232,774 | $148M | 0.1% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 231,730 | $142M | 0.1% | 2026-Q1 |
| Panoramic Hills Capital Ltd new | 220,000 | $140M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 218,617 | $139M | 0.1% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 217,521 | $138M | 0.1% | 2026-Q1 |
| Nearwater Capital Markets, Ltd trimmed | 206,000 | $131M | 0.1% | 2026-Q1 |
| AIGH Capital Management LLC trimmed | 200,000 | $127M | 0.1% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 199,183 | $127M | 0.1% | 2026-Q1 |
| BANK OF NOVA SCOTIA added | 193,920 | $123M | 0.1% | 2026-Q1 |
| Anatole Investment Management Ltd trimmed | 192,755 | $122M | 0.1% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. added | 191,037 | $121M | 0.1% | 2026-Q1 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC trimmed | 185,477 | $118M | 0.1% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 180,072 | $114M | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 49,692 | $113M | 0.1% | 2026-Q2 |
| ING GROEP NV added | 176,547 | $112M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 174,357 | $111M | 0.1% | 2026-Q1 |
| Oxbow Capital Management (HK) Ltd trimmed | 173,969 | $111M | 0.1% | 2026-Q1 |
| Maple Rock Capital Partners Inc. trimmed | 166,500 | $106M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 166,374 | $106M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 161,778 | $103M | 0.1% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 159,896 | $102M | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 44,130 | $100M | 0.1% | 2026-Q2 |
| AustralianSuper Pty Ltd new | 156,766 | $100M | 0.1% | 2026-Q1 |
| Virtu Financial LLC added | 155,015 | $98M | 0.1% | 2026-Q1 |
| GENDELL JEFFREY L trimmed | 150,000 | $95M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 16,976,485 | $4.0B | 3.1% | 2025-Q4 stale |
| Slate Path Capital LP trimmed | 2,693,657 | $302M | 0.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 816,000 | $194M | 0.1% | 2025-Q4 stale |
| FengHe Fund Management Pte. Ltd. added | 431,700 | $102M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.