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  • GUTS Fractyl Health, Inc.

GUTS

Fractyl Health, Inc.

Company with tickers: GUTS

CIK
1572616
CUSIP
35168W103
Shares Outstanding
158,648,963
13F Activity (30d)
77 filings 77 filers
Holders: 84
Total Value: $33,636,598
Total Shares: 73,442,454

Institutional Ownership Trend

9 quarters

Holder Concentration

Across 84 13F filers · Δ vs Dec 31, 2025
Top Holder
18.2%
Mar 2024 → Mar 2026 · range 9.5% – 19.5%
+8.7 pts
Top 5
50.4%
Mar 2024 → Mar 2026 · range 34.0% – 73.7%
+16.5 pts
Top 10
75.0%
Mar 2024 → Mar 2026 · range 56.2% – 89.0%
+18.7 pts
HHI
763
Mar 2024 → Mar 2026 · range 424 – 1,230
Broadly held +339

Quarterly Activity

vs Dec 31, 2025
New
19
Increased
14
Decreased
27
Sold Out
33
Unchanged
24
Holder count: -14
Institutional value: -86.6%
Shares held: -35.5%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid Pale Fire Capital SE +2,711,103 5,921,045
Mid Nantahala Capital Management, LLC +2,518,079 13,364,519
Mid 683 Capital Management, LLC +679,615 6,727,235
Small CM Management, LLC +600,000 1,400,000
Mega UBS Group AG +508,181 1,622,163

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Small SILVERARC CAPITAL MANAGEMENT, LLC −8,138,416 1,701,625
Large MARSHALL WACE, LLP −5,118,949 807,796
Mega GOLDMAN SACHS GROUP INC −3,356,764 68,433
Large Woodline Partners LP −3,265,092 2,241,679
Large RENAISSANCE TECHNOLOGIES LLC −1,827,851 35,200

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 5,533,006 $2,534,116
Mega VANGUARD FIDUCIARY TRUST CO 606,185 $277,632
Small Accredited Investors Inc. 100,000 $45,800
Small Catalyst Funds Management Pty Ltd 46,800 $21,434
Mega Vanguard Global Advisers, LLC 41,311 $18,920

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 6,028,179 $13,261,993
Micro HCC Manager LLC 4,673,870 $10,282,514
Large Alyeska Investment Group, L.P. 3,809,523 $8,380,950
Mid Atom Investors LP 1,883,018 $4,142,639
Mega MILLENNIUM MANAGEMENT LLC 1,861,418 $4,095,119
Filter: New 19 Increased 14 Reduced 27 Sold out 33 Unchanged 24
84 of 84 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Nantahala Capital Management, LLC $6,120,949 18.20% 13,364,519
Mid 683 Capital Management, LLC $3,081,073 9.16% 6,727,235
Mid Pale Fire Capital SE $2,711,838 8.06% 5,921,045
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,534,116 7.53% 5,533,006
Small Catalio Capital Management, LP $2,515,274 7.48% 5,491,866
Small General Catalyst Group Management, LLC $2,236,960 6.65% 4,884,193
Small Deer Management Co. LLC $2,185,072 6.50% 4,770,901
Mid MAVERICK CAPITAL LTD $1,820,461 5.41% 3,974,806
Large Woodline Partners LP $1,026,688 3.05% 2,241,679
Mega BlackRock, Inc. $980,042 2.91% 2,139,837
Micro M28 Capital Management LP $850,101 2.53% 1,856,117
Small SILVERARC CAPITAL MANAGEMENT, LLC $779,344 2.32% 1,701,625
Mega UBS Group AG $742,949 2.21% 1,622,163
Mega GEODE CAPITAL MANAGEMENT, LLC $657,348 1.95% 1,435,261
Mid ADAR1 Capital Management, LLC $654,285 1.95% 1,428,571
Small CM Management, LLC $641,200 1.91% 1,400,000
Mid Ikarian Capital, LLC $503,800 1.50% 1,100,000
Mid Logos Global Management LP $458,000 1.36% 1,000,000
Large MARSHALL WACE, LLP $369,969 1.10% 807,796
Mega VANGUARD FIDUCIARY TRUST CO Bank $277,632 0.83% 606,185
Mid Burkehill Global Management, LP $229,000 0.68% 500,000
Mega MORGAN STANLEY $227,122 0.68% 495,901
Mega TWO SIGMA INVESTMENTS, LP $219,719 0.65% 479,737
Mega STATE STREET CORP $212,832 0.63% 464,700
Mid Shay Capital LLC $163,902 0.49% 357,865
Mid BOOTHBAY FUND MANAGEMENT, LLC $126,050 0.37% 275,219
Mid Brevan Howard Capital Management LP $106,425 0.32% 232,369
Mega NORTHERN TRUST CORP Bank $98,871 0.29% 215,877
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $95,687 0.28% 208,925
Large PEAK6 LLC $91,600 0.27% 200,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $80,647 0.24% 176,087
Large Cerity Partners LLC $77,173 0.23% 168,500
Mega BANK OF AMERICA CORP /DE/ Bank $57,244 0.17% 124,989
Large OMERS ADMINISTRATION Corp $56,746 0.17% 123,900
Mega BARCLAYS PLC $53,149 0.16% 116,048
Large OSAIC HOLDINGS, INC. $46,171 0.14% 100,812
Small Accredited Investors Inc. $45,800 0.14% 100,000
Mid GSA CAPITAL PARTNERS LLP $40,058 0.12% 87,465
Mega GOLDMAN SACHS GROUP INC $31,341 0.09% 68,433
Small Conservest Capital Advisors, Inc. $29,366 0.09% 64,118
Large Cambridge Investment Research Advisors, Inc. $29,312 0.09% 64,000
Large HighTower Advisors, LLC $23,560 0.07% 51,442
Mega CITADEL ADVISORS LLC $22,073 0.07% 48,196
Small Catalyst Funds Management Pty Ltd $21,434 0.06% 46,800
Mid XTX Topco Ltd $20,239 0.06% 44,192
Mega Vanguard Global Advisers, LLC $18,920 0.06% 41,311
Small Phraction Management LLC $18,778 0.06% 41,000
Mid EVOKE WEALTH, LLC $18,320 0.05% 40,000
Mega JANE STREET GROUP, LLC $18,186 0.05% 39,709
Small FNY Investment Advisers, LLC $16,259 0.05% 35,500
Large RENAISSANCE TECHNOLOGIES LLC $16,121 0.05% 35,200
Mid Chicago Partners Investment Group LLC $14,198 0.04% 31,000
Mega WELLS FARGO & COMPANY/MN $14,198 0.04% 31,000
Large Marex Group plc $13,527 0.04% 29,537
Large Schonfeld Strategic Advisors LLC $13,334 0.04% 29,115
Mid Brookstone Capital Management $9,742 0.03% 21,272
Mega LPL Financial LLC $9,354 0.03% 20,425
Mega RAYMOND JAMES FINANCIAL INC $9,193 0.03% 20,074
Large Verition Fund Management LLC $9,146 0.03% 19,971
Mid SummitTX Capital, L.P. $8,335 0.02% 18,200
Small Bronte Capital Management Pty Ltd. $7,742 0.02% 16,905
Large Creative Planning $7,569 0.02% 16,528
Large LMR Partners LLP $7,268 0.02% 15,871
Small Parkside Financial Bank & Trust Bank $7,174 0.02% 15,664
Mid Wealthspire Advisors, LLC $7,152 0.02% 15,617
Micro Algorithmic Investment Models, LLC $7,099 0.02% 15,500
Mega VICTORY CAPITAL MANAGEMENT INC $5,810 0.02% 12,686
Mid PRELUDE CAPITAL MANAGEMENT, LLC $5,168 0.02% 11,286
Small R Squared Ltd $5,164 0.02% 11,276
Mega Bank of New York Mellon Corp Bank $4,616 0.01% 10,079
Mid Larson Financial Group LLC $2,726 0.01% 5,953
Small TFC Financial Management, Inc. $2,290 0.01% 5,000
Mega ROYAL BANK OF CANADA Bank $1,589 0.00% 3,471
Small Triumph Capital Management $1,374 0.00% 3,000
Small St. Johns Investment Management Company, LLC $906 0.00% 1,980
Mid Sound Income Strategies, LLC $902 0.00% 1,971
Micro Avion Wealth $477 0.00% 1,042
Mega JPMORGAN CHASE & CO $427 0.00% 934
Mega BNP PARIBAS ARBITRAGE, SA $367 0.00% 802
Large JONES FINANCIAL COMPANIES LLLP $229 0.00% 500
Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $164 0.00% 360
Small Annis Gardner Whiting Capital Advisors, LLC $91 0.00% 200
Mid SBI Securities Co., Ltd. Broker-Dealer $55 0.00% 121
Mid Optiver Holding B.V. $6 0.00% 14

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