GUTS Fractyl Health, Inc.
Fractyl Health, Inc. (GUTS) Institutional Ownership
What the institutions did with GUTS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Nantahala Capital Management, LLC | 22.6M | 27.5% |
| Catalio Capital Management, LP | 6.2M | 7.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.1M | 7.4% |
| BANK OF AMERICA CORP /DE/ | 6.0M | 7.3% |
| Pale Fire Capital SE | 5.0M | 6.1% |
| General Catalyst Group Management, LLC | 4.9M | 5.9% |
| Deer Management Co. LLC | 4.8M | 5.8% |
| MAVERICK CAPITAL LTD | 4.0M | 4.8% |
| M28 Capital Management LP | 1.9M | 2.3% |
| BlackRock, Inc. | 1.8M | 2.2% |
| Woodline Partners LP | 1.8M | 2.2% |
| JANE STREET GROUP, LLC | 1.7M | 2.1% |
| SILVERARC CAPITAL MANAGEMENT, LLC | 1.6M | 2.0% |
| UBS Group AG | 1.6M | 1.9% |
| CM Management, LLC | 1.4M | 1.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.3M | 1.6% |
| Ikarian Capital, LLC | 1.1M | 1.3% |
| MARSHALL WACE, LLP | 1.1M | 1.3% |
| Logos Global Management LP | 1.0M | 1.2% |
| Brevan Howard Capital Management LP | 916.3K | 1.1% |
| 683 Capital Management, LLC | 756.7K | 0.9% |
| VANGUARD FIDUCIARY TRUST CO | 722.1K | 0.9% |
| STATE STREET CORP | 516.0K | 0.6% |
| MORGAN STANLEY | 426.5K | 0.5% |
| Mink Brook Asset Management LLC | 352.7K | 0.4% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nantahala Capital Management, LLC | Increased | 13.4M | 22.6M | +9.2M |
| 683 Capital Management, LLC | Reduced | 6.7M | 756.7K | -6.0M |
| BANK OF AMERICA CORP /DE/ | Increased | 125.0K | 6.0M | +5.9M |
| JANE STREET GROUP, LLC | Increased | 39.7K | 1.7M | +1.7M |
| Pale Fire Capital SE | Reduced | 5.9M | 5.0M | -917.8K |
| Brevan Howard Capital Management LP | Increased | 232.4K | 916.3K | +684.0K |
| Catalio Capital Management, LP | Increased | 5.5M | 6.2M | +676.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 5.5M | 6.1M | +563.9K |
| Burkehill Global Management, LP | Sold Out | 500.0K | 0 | -500.0K |
| Woodline Partners LP | Reduced | 2.2M | 1.8M | -458.1K |
| Mink Brook Asset Management LLC | New | 0 | 352.7K | +352.7K |
| BlackRock, Inc. | Reduced | 2.1M | 1.8M | -338.8K |
| MARSHALL WACE, LLP | Increased | 807.8K | 1.1M | +272.9K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 479.7K | 224.5K | -255.2K |
| Shay Capital LLC | Reduced | 357.9K | 130.2K | -227.6K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Sold Out | 208.9K | 0 | -208.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 176.1K | 15.1K | -161.0K |
| OMERS ADMINISTRATION Corp | Sold Out | 123.9K | 0 | -123.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 1.4M | 1.3M | -118.9K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 606.2K | 722.1K | +115.9K |
| BARCLAYS PLC | Reduced | 116.0K | 1.9K | -114.2K |
| GOLDMAN SACHS GROUP INC | Increased | 68.4K | 175.9K | +107.4K |
| GSA CAPITAL PARTNERS LLP | Sold Out | 87.5K | 0 | -87.5K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 35.2K | 122.2K | +87.0K |
| MORGAN STANLEY | Reduced | 495.9K | 426.5K | -69.4K |
| SILVERARC CAPITAL MANAGEMENT, LLC | Reduced | 1.7M | 1.6M | -63.6K |
| STATE STREET CORP | Increased | 464.7K | 516.0K | +51.3K |
| MAI Capital Management | New | 0 | 50.0K | +50.0K |
| CITADEL ADVISORS LLC | Sold Out | 48.2K | 0 | -48.2K |
| NORTHERN TRUST CORP | Increased | 215.9K | 261.9K | +46.0K |
| UBS Group AG | Reduced | 1.6M | 1.6M | -42.3K |
| EVOKE WEALTH, LLC | Sold Out | 40.0K | 0 | -40.0K |
| Catalyst Funds Management Pty Ltd | Reduced | 46.8K | 12.7K | -34.1K |
| Sanctuary Advisors, LLC | New | 0 | 32.5K | +32.5K |
| Eaton Financial Holdings Company, LLC | New | 0 | 31.8K | +31.8K |
| FNY Investment Advisers, LLC | Increased | 35.5K | 65.4K | +29.9K |
| Marex Group plc | Sold Out | 29.5K | 0 | -29.5K |
| Schonfeld Strategic Advisors LLC | Sold Out | 29.1K | 0 | -29.1K |
| Tower Research Capital LLC (TRC) | New | 0 | 27.6K | +27.6K |
| BARTLETT & CO. WEALTH MANAGEMENT LLC | New | 0 | 25.0K | +25.0K |
| J.W. COLE ADVISORS, INC. | New | 0 | 20.8K | +20.8K |
| SG Americas Securities, LLC | New | 0 | 18.6K | +18.6K |
| SummitTX Capital, L.P. | Sold Out | 18.2K | 0 | -18.2K |
| Bronte Capital Management Pty Ltd. | Sold Out | 16.9K | 0 | -16.9K |
| LMR Partners LLP | Sold Out | 15.9K | 0 | -15.9K |
| Algorithmic Investment Models, LLC | Sold Out | 15.5K | 0 | -15.5K |
| Naviter Wealth, LLC | New | 0 | 15.3K | +15.3K |
| Parkside Financial Bank & Trust | Reduced | 15.7K | 1.5K | -14.2K |
| XTX Topco Ltd | Reduced | 44.2K | 32.2K | -12.0K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Sold Out | 11.3K | 0 | -11.3K |
| StoneX Group Inc. | New | 0 | 10.4K | +10.4K |
| R Squared Ltd | Increased | 11.3K | 20.0K | +8.7K |
| CITIGROUP INC | New | 0 | 7.9K | +7.9K |
| Larson Financial Group LLC | Sold Out | 6.0K | 0 | -6.0K |
| OSAIC HOLDINGS, INC. | Increased | 100.8K | 106.2K | +5.4K |
| ROYAL BANK OF CANADA | Sold Out | 3.5K | 0 | -3.5K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 12.7K | 15.0K | +2.3K |
| IFP Advisors, Inc | New | 0 | 2.0K | +2.0K |
| Sound Income Strategies, LLC | Sold Out | 2.0K | 0 | -2.0K |
| JPMORGAN CHASE & CO | Increased | 934 | 1.5K | +589 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.