Who owns Shattuck Labs (STTK)
Which tracked institutional funds hold STTK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STTK company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
37 tracked funds added or opened STTK while 18 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
STTK’s largest tracked holder by dollar value, T. Rowe Price Investment Management, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in STTK 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 2026-Q1 and 2026-Q2, across 96 tracked filers holding STTK, 70 increased or opened the position and 39 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 STTK between the 2026-Q1 and 2026-Q2 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 7
- Frazier Life Sciences Management, L.P.$26M
- Deep Track Capital, LP$26M
- WELLINGTON MANAGEMENT GROUP LLP$12M
- Boxer Capital Management, LLC$7M
- VANGUARD PORTFOLIO MANAGEMENT LLC$7M
- West Tower Group, LLC$1M
Full exits 10
- T. Rowe Price Investment Management, Inc.$63M
- MARSHALL WACE, LLP$4M
- JANE STREET GROUP, LLC$3M
- DIADEMA PARTNERS LP$2M
- Hudson Bay Capital Management LP$1M
- ACADIAN ASSET MANAGEMENT LLC$1M
Largest adds
- ADAGE CAPITAL PARTNERS GP, L.L.C.$27M
- BlackRock, Inc.$24M
- Redmile Group, LLC$12M
- Prosight Management, LP$9M
- VANGUARD CAPITAL MANAGEMENT LLC$8M
- PRICE T ROWE ASSOCIATES INC /MD/$7M
Largest trims
- AMERIPRISE FINANCIAL INC$6M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$4M
- MILLENNIUM MANAGEMENT LLC$4M
- SPHERA FUNDS MANAGEMENT LTD.$1M
- TWO SIGMA INVESTMENTS, LP$741K
- BARCLAYS PLC$650K
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 |
|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 8,122,179 | $56M | 10.0% | 2026-Q2 |
| Redmile Group, LLC added | 6,892,033 | $48M | 8.5% | 2026-Q2 |
| ORBIMED ADVISORS LLC | 6,306,127 | $44M | 7.8% | 2026-Q2 |
| Prosight Management, LP added | 5,957,877 | $41M | 7.3% | 2026-Q2 |
| BlackRock, Inc. added | 3,935,810 | $27M | 4.8% | 2026-Q2 |
| Frazier Life Sciences Management, L.P. new | 3,750,000 | $26M | 4.6% | 2026-Q2 |
| NEXTBio Capital Management LP added | 3,727,348 | $26M | 4.6% | 2026-Q2 |
| Deep Track Capital, LP new | 3,706,734 | $26M | 4.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 3,207,865 | $22M | 3.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 2,641,076 | $18M | 3.3% | 2026-Q2 |
| PINNACLE ASSOCIATES LTD added | 1,871,442 | $13M | 2.3% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 1,767,938 | $12M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,584,756 | $11M | 2.0% | 2026-Q2 |
| CLARK ESTATES INC/NY trimmed | 1,430,167 | $10M | 1.8% | 2026-Q2 |
| Aberdeen Group plc added | 1,405,851 | $10M | 1.7% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 1,170,732 | $8M | 1.4% | 2026-Q2 |
| 683 Capital Management, LLC added | 1,157,216 | $8M | 1.4% | 2026-Q2 |
| STATE STREET CORP added | 1,026,394 | $7M | 1.3% | 2026-Q2 |
| Boxer Capital Management, LLC new | 1,000,000 | $7M | 1.2% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 946,985 | $7M | 1.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 743,761 | $5M | 0.9% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 593,324 | $4M | 0.7% | 2026-Q2 |
| TD Asset Management Inc added | 558,876 | $4M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 520,316 | $4M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 463,415 | $3M | 0.6% | 2026-Q2 |
| S&G Foundation | 435,749 | $3M | 0.5% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 421,187 | $3M | 0.5% | 2026-Q2 |
| FMR LLC added | 392,596 | $3M | 0.5% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 356,528 | $2M | 0.4% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 286,489 | $2M | 0.4% | 2026-Q2 |
| Hillsdale Investment Management Inc. added | 263,418 | $2M | 0.3% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 227,071 | $2M | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 218,505 | $2M | 0.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 194,008 | $1M | 0.2% | 2026-Q2 |
| West Tower Group, LLC new | 191,625 | $1M | 0.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 189,899 | $1M | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 185,947 | $1M | 0.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 181,712 | $1M | 0.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP | 155,642 | $1M | 0.2% | 2026-Q2 |
| XTX Topco Ltd trimmed | 93,754 | $651K | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 88,800 | $616K | 0.1% | 2026-Q2 |
| SPHERA FUNDS MANAGEMENT LTD. trimmed | 86,461 | $600K | 0.1% | 2026-Q2 |
| Nuveen, LLC added | 81,422 | $565K | 0.1% | 2026-Q2 |
| Pathstone Holdings, LLC | 73,956 | $513K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 71,547 | $497K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 71,488 | $496K | 0.1% | 2026-Q2 |
| Coastline Trust Co new | 70,000 | $486K | 0.1% | 2026-Q2 |
| Invesco Ltd. added | 65,250 | $453K | 0.1% | 2026-Q2 |
| UBS Group AG added | 57,239 | $397K | 0.1% | 2026-Q2 |
| Verdad Advisers, LP added | 57,231 | $397K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 55,367 | $384K | 0.1% | 2026-Q2 |
| BLAIR WILLIAM & CO/IL new | 54,471 | $378K | 0.1% | 2026-Q2 |
| Cerity Partners LLC new | 52,745 | $366K | 0.1% | 2026-Q2 |
| Davis Asset Management, L.P. | 48,276 | $335K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 45,918 | $319K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC | 42,445 | $312K | 0.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 42,300 | $294K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 37,420 | $260K | 0.0% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 35,549 | $247K | 0.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 33,190 | $213K | 0.0% | 2026-Q2 |
| MIDDLETON & CO INC/MA new | 30,000 | $208K | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 28,771 | $200K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 28,127 | $195K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 28,062 | $195K | 0.0% | 2026-Q2 |
| EntryPoint Capital, LLC new | 26,387 | $183K | 0.0% | 2026-Q2 |
| RITHOLTZ WEALTH MANAGEMENT | 26,000 | $180K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 25,668 | $176K | 0.0% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 25,176 | $175K | 0.0% | 2026-Q2 |
| Mallini Complete Financial Planning LLC | 22,632 | $157K | 0.0% | 2026-Q2 |
| State of Wyoming new | 21,785 | $151K | 0.0% | 2026-Q2 |
| CHOREO, LLC | 27,251 | $140K | 0.0% | 2026-Q2 |
| MGO ONE SEVEN LLC new | 20,000 | $139K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 19,835 | $138K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey added | 18,092 | $126K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 17,374 | $121K | 0.0% | 2026-Q2 |
| BENJAMIN EDWARDS INC trimmed | 17,290 | $120K | 0.0% | 2026-Q2 |
| China Universal Asset Management Co., Ltd. new | 14,641 | $102K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 14,200 | $99K | 0.0% | 2026-Q2 |
| Creative Planning | 12,335 | $86K | 0.0% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. new | 12,035 | $84K | 0.0% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 11,778 | $82K | 0.0% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 10,594 | $74K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 9,217 | $64K | 0.0% | 2026-Q2 |
| Legal & General Group Plc added | 5,956 | $41K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. added | 5,567 | $39K | 0.0% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 5,417 | $38K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 5,133 | $36K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 4,195 | $29K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 845 | $6K | 0.0% | 2026-Q2 |
| Larson Financial Group LLC new | 500 | $3K | 0.0% | 2026-Q2 |
| Truvestments Capital LLC new | 491 | $3K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC added | 348 | $2K | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 30 | $208 | 0.0% | 2026-Q2 |
| Quarry LP new | 26 | $180 | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 21 | $146 | 0.0% | 2026-Q2 |
| Optiver Holding B.V. trimmed | 2 | $14 | 0.0% | 2026-Q2 |
| T. Rowe Price Investment Management, Inc. added | 9,865,558 | $63M | 11.2% | 2026-Q1 stale (1 quarter behind) |
| MARSHALL WACE, LLP added | 581,471 | $4M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| JANE STREET GROUP, LLC added | 415,938 | $3M | 0.5% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 2,377,746 | $9M | 1.5% | 2025-Q4 stale (2 quarters behind) |
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.