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Institutional Ownership · SEC Form 13F

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.

96
Institutional holders
70M
Shares held (tracked funds)

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).

FundSharesReported value% of valueQuarter
ADAGE CAPITAL PARTNERS GP, L.L.C. added8,122,179$56M10.0%2026-Q2
Redmile Group, LLC added6,892,033$48M8.5%2026-Q2
ORBIMED ADVISORS LLC6,306,127$44M7.8%2026-Q2
Prosight Management, LP added5,957,877$41M7.3%2026-Q2
BlackRock, Inc. added3,935,810$27M4.8%2026-Q2
Frazier Life Sciences Management, L.P. new3,750,000$26M4.6%2026-Q2
NEXTBio Capital Management LP added3,727,348$26M4.6%2026-Q2
Deep Track Capital, LP new3,706,734$26M4.6%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC added3,207,865$22M3.9%2026-Q2
PRICE T ROWE ASSOCIATES INC /MD/ added2,641,076$18M3.3%2026-Q2
PINNACLE ASSOCIATES LTD added1,871,442$13M2.3%2026-Q2
WELLINGTON MANAGEMENT GROUP LLP new1,767,938$12M2.2%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC added1,584,756$11M2.0%2026-Q2
CLARK ESTATES INC/NY trimmed1,430,167$10M1.8%2026-Q2
Aberdeen Group plc added1,405,851$10M1.7%2026-Q2
Point72 Asset Management, L.P. added1,170,732$8M1.4%2026-Q2
683 Capital Management, LLC added1,157,216$8M1.4%2026-Q2
STATE STREET CORP added1,026,394$7M1.3%2026-Q2
Boxer Capital Management, LLC new1,000,000$7M1.2%2026-Q2
VANGUARD PORTFOLIO MANAGEMENT LLC new946,985$7M1.2%2026-Q2
RENAISSANCE TECHNOLOGIES LLC added743,761$5M0.9%2026-Q2
GOLDMAN SACHS GROUP INC added593,324$4M0.7%2026-Q2
TD Asset Management Inc added558,876$4M0.7%2026-Q2
NORTHERN TRUST CORP added520,316$4M0.6%2026-Q2
VANGUARD FIDUCIARY TRUST CO added463,415$3M0.6%2026-Q2
S&G Foundation435,749$3M0.5%2026-Q2
ALGERT GLOBAL LLC added421,187$3M0.5%2026-Q2
FMR LLC added392,596$3M0.5%2026-Q2
DEUTSCHE BANK AG\ added356,528$2M0.4%2026-Q2
Connor, Clark & Lunn Investment Management Ltd. added286,489$2M0.4%2026-Q2
Hillsdale Investment Management Inc. added263,418$2M0.3%2026-Q2
MANUFACTURERS LIFE INSURANCE COMPANY, THE added227,071$2M0.3%2026-Q2
Bank of New York Mellon Corp added218,505$2M0.3%2026-Q2
MILLENNIUM MANAGEMENT LLC trimmed194,008$1M0.2%2026-Q2
West Tower Group, LLC new191,625$1M0.2%2026-Q2
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added189,899$1M0.2%2026-Q2
TWO SIGMA INVESTMENTS, LP trimmed185,947$1M0.2%2026-Q2
MORGAN STANLEY trimmed181,712$1M0.2%2026-Q2
DIMENSIONAL FUND ADVISORS LP155,642$1M0.2%2026-Q2
XTX Topco Ltd trimmed93,754$651K0.1%2026-Q2
Jump Financial, LLC added88,800$616K0.1%2026-Q2
SPHERA FUNDS MANAGEMENT LTD. trimmed86,461$600K0.1%2026-Q2
Nuveen, LLC added81,422$565K0.1%2026-Q2
Pathstone Holdings, LLC73,956$513K0.1%2026-Q2
Squarepoint Ops LLC added71,547$497K0.1%2026-Q2
RHUMBLINE ADVISERS added71,488$496K0.1%2026-Q2
Coastline Trust Co new70,000$486K0.1%2026-Q2
Invesco Ltd. added65,250$453K0.1%2026-Q2
UBS Group AG added57,239$397K0.1%2026-Q2
Verdad Advisers, LP added57,231$397K0.1%2026-Q2
WELLS FARGO & COMPANY/MN added55,367$384K0.1%2026-Q2
BLAIR WILLIAM & CO/IL new54,471$378K0.1%2026-Q2
Cerity Partners LLC new52,745$366K0.1%2026-Q2
Davis Asset Management, L.P.48,276$335K0.1%2026-Q2
BANK OF AMERICA CORP /DE/ trimmed45,918$319K0.1%2026-Q2
HSBC HOLDINGS PLC42,445$312K0.1%2026-Q2
BRIDGEWAY CAPITAL MANAGEMENT, LLC42,300$294K0.1%2026-Q2
MetLife Investment Management, LLC added37,420$260K0.0%2026-Q2
AMERIPRISE FINANCIAL INC trimmed35,549$247K0.0%2026-Q2
ALLIANCEBERNSTEIN L.P. added33,190$213K0.0%2026-Q2
MIDDLETON & CO INC/MA new30,000$208K0.0%2026-Q2
CITIGROUP INC trimmed28,771$200K0.0%2026-Q2
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added28,127$195K0.0%2026-Q2
Russell Investments Group, Ltd. added28,062$195K0.0%2026-Q2
EntryPoint Capital, LLC new26,387$183K0.0%2026-Q2
RITHOLTZ WEALTH MANAGEMENT26,000$180K0.0%2026-Q2
JPMORGAN CHASE & CO added25,668$176K0.0%2026-Q2
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed25,176$175K0.0%2026-Q2
Mallini Complete Financial Planning LLC22,632$157K0.0%2026-Q2
State of Wyoming new21,785$151K0.0%2026-Q2
CHOREO, LLC27,251$140K0.0%2026-Q2
MGO ONE SEVEN LLC new20,000$139K0.0%2026-Q2
Vanguard Global Advisers, LLC trimmed19,835$138K0.0%2026-Q2
Police & Firemen's Retirement System of New Jersey added18,092$126K0.0%2026-Q2
BARCLAYS PLC trimmed17,374$121K0.0%2026-Q2
BENJAMIN EDWARDS INC trimmed17,290$120K0.0%2026-Q2
China Universal Asset Management Co., Ltd. new14,641$102K0.0%2026-Q2
NEW YORK STATE COMMON RETIREMENT FUND added14,200$99K0.0%2026-Q2
Creative Planning12,335$86K0.0%2026-Q2
FOX RUN MANAGEMENT, L.L.C. new12,035$84K0.0%2026-Q2
VOYA INVESTMENT MANAGEMENT LLC trimmed11,778$82K0.0%2026-Q2
INTECH INVESTMENT MANAGEMENT LLC trimmed10,594$74K0.0%2026-Q2
BNP PARIBAS FINANCIAL MARKETS added9,217$64K0.0%2026-Q2
Legal & General Group Plc added5,956$41K0.0%2026-Q2
Ameritas Investment Partners, Inc. added5,567$39K0.0%2026-Q2
SIMPLEX TRADING, LLC added5,417$38K0.0%2026-Q2
Tower Research Capital LLC (TRC) trimmed5,133$36K0.0%2026-Q2
ROYAL BANK OF CANADA added4,195$29K0.0%2026-Q2
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed845$6K0.0%2026-Q2
Larson Financial Group LLC new500$3K0.0%2026-Q2
Truvestments Capital LLC new491$3K0.0%2026-Q2
Sterling Capital Management LLC added348$2K0.0%2026-Q2
Caitong International Asset Management Co., Ltd new30$2080.0%2026-Q2
Quarry LP new26$1800.0%2026-Q2
SBI Securities Co., Ltd. trimmed21$1460.0%2026-Q2
Optiver Holding B.V. trimmed2$140.0%2026-Q2
T. Rowe Price Investment Management, Inc. added9,865,558$63M11.2%2026-Q1 stale (1 quarter behind)
MARSHALL WACE, LLP added581,471$4M0.7%2026-Q1 stale (1 quarter behind)
JANE STREET GROUP, LLC added415,938$3M0.5%2026-Q1 stale (1 quarter behind)
VANGUARD GROUP INC added2,377,746$9M1.5%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.

HoldersTotal shares

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.

Learn how to read institutional ownership