Fractyl HealthGUTS
13F holders, Q1 2026 (March 31)83holders −14
16new positions
29sold out
3famous investors
$0.46avg. 13F price*
At the end of Q1 2026, 83 institutions reported holding Fractyl Health Inc. (GUTS) in their 13F filings, down 14 from Q4 2025. 16 opened new positions and 29 sold out. The largest holders were Nantahala Capital Management, LLC ($6.1M), 683 Capital Management, LLC ($3.1M) and Pale Fire Capital SE ($2.7M). 3 famous investors held it, including Lee Ainslie (0.0% of Maverick Capital's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Fractyl Health Inc.
- CUSIP
- 35168W103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 16 | $176K |
| Exits | 29 | $32.2M |
All 13F filers, Q4 2025 → Q1 2026: 8,050,832 shares bought and 42,645,240 shares sold, net −34,594,408 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 83 holders
| Nantahala Capital Management, LLC | 0.38% | Add +23.2% | 13,364,519 | $6.1M |
| 683 Capital Management, LLC | 0.30% | Add +11.2% | 6,727,235 | $3.1M |
| Pale Fire Capital SE | 0.24% | Add +84.5% | 5,921,045 | $2.7M |
| Vanguard Capital Management LLC | 0.00% | — | 5,533,006 | $2.5M |
| Catalio Capital Management, LP | 0.53% | No change | 5,491,866 | $2.5M |
| General Catalyst Group Management, LLC | 1.22% | No change | 4,884,193 | $2.2M |
| Deer Management Co. LLC | 0.35% | No change | 4,770,901 | $2.2M |
| Maverick Capital | 0.02% | Reduce -6.4% | 3,974,806 | $1.8M |
| Woodline Partners LP | 0.00% | Reduce -59.3% | 2,241,679 | $1.0M |
| BlackRock, Inc. | 0.00% | Add +2.7% | 2,139,837 | $980K |
| M28 Capital Management LP | 1.58% | No change | 1,856,117 | $850K |
| Silverarc Capital Management, LLC | 0.09% | Reduce -82.7% | 1,701,625 | $779K |
| UBS Group AG | 0.00% | Add +45.6% | 1,622,163 | $743K |
| Geode Capital Management, LLC | 0.00% | Add +13.6% | 1,435,261 | $657K |
| CM Management, LLC | 0.54% | Add +75.0% | 1,400,000 | $641K |
| Ikarian Capital, LLC | 0.07% | No change | 1,100,000 | $504K |
| Logos Global Management LP | 0.02% | Reduce -9.1% | 1,000,000 | $458K |
| Marshall Wace, LLP | 0.00% | Reduce -86.4% | 807,796 | $372K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 606,185 | $278K |
| Burkehill Global Management, LP | 0.01% | No change | 500,000 | $229K |
| Morgan Stanley | 0.00% | Reduce -24.5% | 495,901 | $227K |
| Two Sigma Investments, LP | 0.00% | Reduce -73.9% | 479,737 | $220K |
| State Street Corp. | 0.00% | Reduce -9.4% | 464,700 | $213K |
| Shay Capital LLC | 0.02% | Add +162.0% | 357,865 | $164K |
| Boothbay Fund Management, LLC | 0.00% | No change | 275,219 | $126K |
| Brevan Howard Capital Management LP | 0.00% | Reduce -50.0% | 232,369 | $99K |
| Northern Trust Corp. | 0.00% | No change | 215,877 | $99K |
| Bridgeway Capital Management, LLC | 0.00% | Add +283.4% | 208,925 | $96K |
| PEAK6 LLC | 0.00% | No change | 200,000 | $92K |
| Susquehanna International Group, LLP | 0.00% | Reduce -78.0% | 176,087 | $81K |
| Cerity Partners LLC | 0.00% | Add +3.1% | 168,500 | $77K |
| Bank of America Corp. | 0.00% | Reduce -89.5% | 124,989 | $57K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -30.9% | 123,900 | $57K |
| Barclays PLC | 0.00% | Reduce -52.3% | 116,048 | $53K |
| Osaic Holdings, Inc. | 0.00% | Add +33.6% | 100,812 | $46K |
| Accredited Investors Inc. | 0.00% | New | 100,000 | $46K |
| Gsa Capital Partners LLP | 0.00% | Reduce -53.8% | 87,465 | $40K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -98.0% | 68,433 | $31K |
| Conservest Capital Advisors, Inc. | 0.00% | No change | 64,118 | $29K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | No change | 64,000 | $29K |
| HighTower Advisors, LLC | 0.00% | No change | 51,442 | $24K |
| Citadel Advisors | 0.00% | Reduce -79.0% | 48,196 | $22K |
| Catalyst Funds Management Pty Ltd | 0.00% | New | 46,800 | $21K |
| XTX Topco Ltd | 0.00% | Reduce -14.9% | 44,192 | $20K |
| Vanguard Global Advisers, LLC | 0.00% | — | 41,311 | $19K |
| Phraction Management LLC | 0.01% | New | 41,000 | $19K |
| Evoke Wealth, LLC | 0.00% | New | 40,000 | $18K |
| Chicago Partners Investment Group LLC | 0.00% | No change | 31,000 | $18K |
| Jane Street Group, LLC | 0.00% | Reduce -97.9% | 39,709 | $18K |
| Renaissance Technologies | 0.00% | Reduce -98.1% | 35,200 | $16K |
| FNY Investment Advisers, LLC | 0.01% | Reduce -27.0% | 35,500 | $16K |
| Wells Fargo & Company | 0.00% | New | 31,000 | $14K |
| Marex Group Ltd | 0.00% | New | 29,537 | $14K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -42.0% | 29,115 | $13K |
| Brookstone Capital Management | 0.00% | New | 21,272 | $10K |
| LPL Financial LLC | 0.00% | Add +95.9% | 20,425 | $9K |
| Raymond James Financial Inc. | 0.00% | Add +33.2% | 20,074 | $9K |
| Verition Fund Management LLC | 0.00% | Reduce -63.6% | 19,971 | $9K |
| SummitTX Capital, L.P. | 0.00% | New | 18,200 | $8K |
| Bronte Capital Management Pty Ltd. | 0.00% | No change | 16,905 | $8K |
| Creative Planning | 0.00% | Reduce -5.6% | 16,528 | $8K |
| LMR Partners LLP | 0.00% | New | 15,871 | $7K |
| Parkside Financial Bank & Trust | 0.00% | Reduce -3.9% | 15,664 | $7K |
| Wealthspire Advisors, LLC | 0.00% | New | 15,617 | $7K |
| Algorithmic Investment Models, LLC | 0.01% | New | 15,500 | $7K |
| Victory Capital Management Inc. | 0.00% | Reduce -2.9% | 12,686 | $6K |
| Prelude Capital Management, LLC | 0.00% | Reduce -86.0% | 11,286 | $5K |
| R Squared Ltd | 0.00% | Reduce -19.3% | 11,276 | $5K |
| Bank of New York Mellon Corp | 0.00% | No change | 10,079 | $5K |
| Larson Financial Group LLC | 0.00% | No change | 5,953 | $3K |
| TFC Financial Management, Inc. | 0.00% | New | 5,000 | $2K |
| Royal Bank of Canada | 0.00% | New | 3,471 | $2K |
| Triumph Capital Management | 0.00% | No change | 3,000 | $1K |
| Sound Income Strategies, LLC | 0.00% | No change | 1,971 | $916 |
| St. Johns Investment Management Company, LLC | 0.00% | No change | 1,980 | $906 |
| JPMorgan Chase & Co. | 0.00% | No change | 934 | $399 |
| BNP Paribas Financial Markets | 0.00% | No change | 802 | $367 |
| Jones Financial Companies LLLP | 0.00% | No change | 500 | $224 |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 360 | $165 |
| Annis Gardner Whiting Capital Advisors, LLC | 0.00% | New | 200 | $92 |
| SBI Securities Co., Ltd. | 0.00% | Add +0.8% | 121 | $55 |
| Optiver Holding B.V. | 0.00% | No change | 14 | $6 |
| Avion Wealth | 0.00% | New | 1,042 | $0 |
"% of holder's portfolio" is GUTS's weight in each manager's 13F, not the share of Fractyl Health Inc. the manager owns.