Who owns Fractyl Health, Inc. Common Stock (GUTS)
Which tracked institutional funds hold GUTS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GUTS 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
The tracked-fund tape on GUTS is one-sided between 2026-Q1 and 2026-Q2: 21 added or opened and 1 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
GUTS’s largest tracked holder by dollar value, VANGUARD GROUP 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 gap the other way — the median holder sizes GUTS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in GUTS 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 71 tracked filers holding GUTS, 27 increased or opened the position and 40 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases. A multi-insider buy cluster also fired inside the quarter.
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 GUTS 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.
Largest adds
- BANK OF AMERICA CORP /DE/$5M
- Nantahala Capital Management, LLC$3M
- Catalio Capital Management, LP$2M
- VANGUARD CAPITAL MANAGEMENT LLC$2M
- General Catalyst Group Management, LLC$2M
- Deer Management Co. LLC$2M
Largest trims
- 683 Capital Management, LLC$2M
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 |
|---|---|---|---|---|
| Nantahala Capital Management, LLC trimmed | 11,289,096 | $9M | 7.7% | 2026-Q2 |
| Catalio Capital Management, LP added | 6,168,749 | $5M | 4.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 6,096,926 | $5M | 4.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 6,034,147 | $5M | 4.1% | 2026-Q2 |
| Pale Fire Capital SE trimmed | 5,003,237 | $4M | 3.4% | 2026-Q2 |
| General Catalyst Group Management, LLC trimmed | 4,884,186 | $4M | 3.3% | 2026-Q2 |
| Deer Management Co. LLC | 4,770,901 | $4M | 3.2% | 2026-Q2 |
| MAVERICK CAPITAL LTD | 3,974,806 | $3M | 2.7% | 2026-Q2 |
| M28 Capital Management LP | 1,856,117 | $1M | 1.3% | 2026-Q2 |
| BlackRock, Inc. trimmed | 1,801,060 | $1M | 1.2% | 2026-Q2 |
| Woodline Partners LP trimmed | 1,783,592 | $1M | 1.2% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 1,731,622 | $1M | 1.2% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 1,637,976 | $1M | 1.1% | 2026-Q2 |
| UBS Group AG trimmed | 1,579,889 | $1M | 1.1% | 2026-Q2 |
| CM Management, LLC | 1,400,000 | $1M | 1.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,316,341 | $1M | 0.9% | 2026-Q2 |
| Ikarian Capital, LLC | 1,100,000 | $874K | 0.7% | 2026-Q2 |
| MARSHALL WACE, LLP added | 1,080,667 | $854K | 0.7% | 2026-Q2 |
| Logos Global Management LP | 1,000,000 | $794K | 0.7% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 916,321 | $719K | 0.6% | 2026-Q2 |
| 683 Capital Management, LLC trimmed | 756,715 | $601K | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 722,132 | $573K | 0.5% | 2026-Q2 |
| STATE STREET CORP added | 516,000 | $410K | 0.4% | 2026-Q2 |
| MORGAN STANLEY trimmed | 426,504 | $339K | 0.3% | 2026-Q2 |
| Mink Brook Asset Management LLC new | 352,745 | $280K | 0.2% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 275,219 | $219K | 0.2% | 2026-Q2 |
| NORTHERN TRUST CORP added | 261,907 | $208K | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 224,537 | $178K | 0.2% | 2026-Q2 |
| PEAK6 LLC | 200,000 | $159K | 0.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 175,864 | $140K | 0.1% | 2026-Q2 |
| Cerity Partners LLC | 168,500 | $134K | 0.1% | 2026-Q2 |
| Shay Capital LLC trimmed | 130,221 | $103K | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 122,200 | $97K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 106,216 | $84K | 0.1% | 2026-Q2 |
| Accredited Investors Inc. | 100,000 | $79K | 0.1% | 2026-Q2 |
| Conservest Capital Advisors, Inc. | 64,118 | $51K | 0.0% | 2026-Q2 |
| MAI Capital Management new | 50,000 | $40K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 41,311 | $33K | 0.0% | 2026-Q2 |
| Phraction Management LLC | 41,000 | $33K | 0.0% | 2026-Q2 |
| Sanctuary Advisors, LLC new | 32,500 | $26K | 0.0% | 2026-Q2 |
| XTX Topco Ltd trimmed | 32,215 | $26K | 0.0% | 2026-Q2 |
| Eaton Financial Holdings Company, LLC new | 31,835 | $25K | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN | 31,000 | $25K | 0.0% | 2026-Q2 |
| Chicago Partners Investment Group LLC | 31,000 | $23K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 27,628 | $22K | 0.0% | 2026-Q2 |
| BARTLETT & CO. WEALTH MANAGEMENT LLC new | 25,000 | $20K | 0.0% | 2026-Q2 |
| Brookstone Capital Management | 21,272 | $17K | 0.0% | 2026-Q2 |
| J.W. COLE ADVISORS, INC. new | 20,780 | $17K | 0.0% | 2026-Q2 |
| LPL Financial LLC | 20,425 | $16K | 0.0% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC | 20,074 | $16K | 0.0% | 2026-Q2 |
| Verition Fund Management LLC | 19,971 | $16K | 0.0% | 2026-Q2 |
| R Squared Ltd added | 19,966 | $16K | 0.0% | 2026-Q2 |
| Creative Planning | 16,528 | $13K | 0.0% | 2026-Q2 |
| Wealthspire Advisors, LLC | 15,617 | $12K | 0.0% | 2026-Q2 |
| Naviter Wealth, LLC new | 15,280 | $12K | 0.0% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 15,132 | $12K | 0.0% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 15,009 | $12K | 0.0% | 2026-Q2 |
| Catalyst Funds Management Pty Ltd trimmed | 12,725 | $10K | 0.0% | 2026-Q2 |
| StoneX Group Inc. new | 10,405 | $8K | 0.0% | 2026-Q2 |
| Bank of New York Mellon Corp added | 10,080 | $8K | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 7,852 | $6K | 0.0% | 2026-Q2 |
| TFC Financial Management, Inc. | 5,000 | $4K | 0.0% | 2026-Q2 |
| Triumph Capital Management | 3,000 | $2K | 0.0% | 2026-Q2 |
| IFP Advisors, Inc added | 2,000 | $2K | 0.0% | 2026-Q2 |
| St. Johns Investment Management Company, LLC | 1,980 | $2K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 1,865 | $1K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 1,523 | $1K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 555 | $441 | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP | 500 | $372 | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 121 | $96 | 0.0% | 2026-Q2 |
| Optiver Holding B.V. | 14 | $11 | 0.0% | 2026-Q2 |
| Burkehill Global Management, LP | 500,000 | $229K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 6,028,179 | $13M | 11.3% | 2025-Q4 stale (2 quarters behind) |
| HCC Manager LLC trimmed | 4,673,870 | $10M | 8.8% | 2025-Q4 stale (2 quarters behind) |
| Alyeska Investment Group, L.P. trimmed | 3,809,523 | $8M | 7.2% | 2025-Q4 stale (2 quarters behind) |
| Atom Investors LP new | 1,883,018 | $4M | 3.5% | 2025-Q4 stale (2 quarters behind) |
| MILLENNIUM MANAGEMENT LLC added | 1,861,418 | $4M | 3.5% | 2025-Q4 stale (2 quarters behind) |
| D. E. Shaw & Co., Inc. added | 1,442,745 | $3M | 2.7% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA ADVISERS, LP new | 1,298,700 | $3M | 2.4% | 2025-Q4 stale (2 quarters behind) |
| Newtyn Management, LLC new | 1,134,021 | $2M | 2.1% | 2025-Q4 stale (2 quarters behind) |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 852,344 | $2M | 1.6% | 2025-Q4 stale (2 quarters behind) |
| Walleye Capital LLC new | 592,125 | $1M | 1.1% | 2025-Q4 stale (2 quarters behind) |
| Diametric Capital, LP added | 503,409 | $1M | 0.9% | 2025-Q4 stale (2 quarters behind) |
| Soleus Capital Management, L.P. trimmed | 400,000 | $880K | 0.8% | 2025-Q4 stale (2 quarters behind) |
| Rosalind Advisors, Inc. trimmed | 385,731 | $849K | 0.7% | 2025-Q4 stale (2 quarters behind) |
| Point72 Asset Management, L.P. trimmed | 365,173 | $803K | 0.7% | 2025-Q4 stale (2 quarters behind) |
| Quadrature Capital Ltd added | 290,714 | $640K | 0.5% | 2025-Q4 stale (2 quarters behind) |
| ExodusPoint Capital Management, LP added | 178,024 | $392K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| Hudson Bay Capital Management LP added | 171,816 | $378K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| Squarepoint Ops LLC new | 147,659 | $325K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| Quantbot Technologies LP new | 120,434 | $265K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Qube Research & Technologies Ltd added | 117,631 | $259K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Virtu Financial LLC added | 69,427 | $153K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Balyasny Asset Management L.P. new | 60,219 | $132K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Susquehanna Portfolio Strategies, LLC new | 49,137 | $108K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Alphabet Inc. | 662,584 | $1M | 0.9% | 2025-Q3 stale (3 quarters behind) |
| HRT FINANCIAL LP added | 614,792 | $977K | 0.8% | 2025-Q3 stale (3 quarters behind) |
| NORGES BANK | 100,000 | $253K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Y-Intercept (Hong Kong) Ltd new | 111,425 | $181K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| AQR CAPITAL MANAGEMENT LLC added | 64,700 | $105K | 0.1% | 2025-Q2 stale (4 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.