GUTS · Fractyl Health, Inc. · Holdings

$1.36 -0.02 (-1.46%)

Market Cap

$18.31M

13.26M

Volume · Oct 20 446.69K Avg daily vol (12 sessions) 1.53M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of GUTS: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 77

Total Value: $56,174,895

Total Shares: 70,762,662

Institutional Ownership Trend

11 quarters

Holder Concentration

Across 77 13F filers

Top Holder

15.9%

of institutional value

Top 5

48.8%

of institutional value

Top 10

73.2%

of institutional value

HHI

707

Broadly held

Who Holds GUTS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 77 filers, like-for-like change -1.6%; actively managed books -2.5%; index-like books +3.3%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	65.5%	34	-14.9%	5	12
Exempt adviser	5.4%	3	+32.3%	0	1
Bank	11.9%	9	+226.1%	1	1
Broker-dealer	0.3%	2	0.0%	0	0
Non-US	0.0%	2	-27.3%	0	0
Holding company	10.6%	5	-13.9%	0	0
Benefit plan	0.0%	0	-100.0%	0	1
Adviser	0.0%	0	—	0	0
Insurer	0.0%	0	—	0	0
Unknown	6.2%	22	+49.8%	6	3

Style	Share	Filers	Change	New	Exited
Index-like	16.0%	9	+3.3%	0	0
Systematic-like	6.3%	11	+1.6%	1	5
Concentrated	24.1%	13	-6.0%	1	3
Diversified active	53.6%	44	-1.2%	10	9
Unknown	0.0%	0	-100.0%	0	1
Not measured	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	19.3%	36	+78.7%	7	7
Medium turnover	44.5%	18	-23.0%	4	4
High turnover	26.5%	20	+8.9%	1	7
Unknown	9.7%	3	+11.0%	0	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	25.2%	8	+4.2%	0	3
Medium horizon	26.1%	17	-2.9%	3	5
Long horizon	21.2%	44	+91.0%	9	8
Unknown	27.5%	8	-30.4%	0	2
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	31.7%	18	+3.5%	3	4
$1B to $10B	27.9%	21	-31.5%	5	8
$10B to $100B	10.5%	12	-2.5%	2	3
$100B or more	29.8%	26	+53.7%	2	3
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.7%	14	+19.9%	4	3
Pooled investment vehicles	53.7%	15	-18.7%	0	7
Registered funds and BDCs	10.5%	3	+3.3%	0	1
Corporations	0.1%	1	0.0%	0	0
Other	0.0%	0	-100.0%	0	1
Diversified	0.0%	0	—	0	0
Pension and profit sharing plans	0.0%	0	—	0	0
Insurance companies	0.0%	0	—	0	0
Governments and sovereign funds	0.0%	0	—	0	0
Other investment advisers	0.0%	0	—	0	0
Unknown	35.0%	44	+41.5%	8	6

Private funds	Share	Filers	Change	New	Exited
Hedge funds	33.2%	13	-25.7%	1	7
Private equity funds	0.0%	2	+8.0%	0	0
Venture capital funds	26.4%	5	+3.8%	0	0
Other private funds	0.4%	3	-45.5%	0	2
No private funds	10.8%	13	+6.4%	3	3
Real estate funds	0.1%	1	new	1	0
Private funds, type not stated	0.0%	0	-100.0%	0	1
Securitized asset funds	0.0%	0	—	0	0
Unknown	29.1%	40	+41.0%	7	5

Location	Share	Filers	Change	New	Exited
United States	87.8%	67	-1.2%	12	12
Outside the US	12.2%	10	-4.8%	0	6

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

77 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

3.90% of filers hold it in their top 10

Mar 31, 2026: 3

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

28.2%

of shares outstanding, 78th percentile

Mar 31, 2026: 32.2%

Private-fund advisers

26.8%

of shares outstanding

Institutional ownership

44.6%

45.3% of the estimated free float

Top 10 holders

73.2%

of 13F shares, Herfindahl 0.071

Active holders

-2.5%

like-for-like share change of active filers

5% stakes on record

0 13D, 4 13G (1 institutional, 2 passive, 1 exempt)

How long holders have held it value-weighted 6.2 quarters

Under 1 year 22.2% 1 to 3 years 77.8% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$2.61

estimated per share

Mar 31, 2026: $2.72

Quarter-end price

$0.79

implied by 13F values

Estimated gain or loss

-69.5%

price against the estimated cost

Estimated at a loss

85.5%

of costed 13F value

Estimated cost covers 81.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies GUTS's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	IVVD Invivyd, Inc.	4	0.243
2	CNTB Connect Biopharma Holdings Ltd	3	0.226
3	IMUX Immunic, Inc.	3	0.217
4	AMAN Amanat Acquisition Corp.	3	0.200
5	WVE Wave Life Sciences, Inc.	4	0.196
6	MANE Veradermics, Inc	4	0.189
7	LXEO Lexeo Therapeutics, Inc.	3	0.188
8	SLN Silence Therapeutics plc	3	0.188
9	TRAX First Tracks Biotherapeutics, Inc.	3	0.177
10	ABEO Abeona Therapeutics Inc.	3	0.177

Shareholder Targets

13F filers that own its peers but not GUTS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: IVVD, CNTB, IMUX, AMAN, WVE, MANE, LXEO, SLN, TRAX, ABEO, ALEC, AMLX, PRQR, ODTX, FTH, AVTX, HELP, QURE, PBLS, PCVX. 710 filers in all.

#	Filer	In peers	Of book	Largest peers
1	FMR LLC Holding company, Diversified active	$2,512,396,000 15 held	0.110%	PCVX, MANE, AMLX
2	RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated	$1,679,267,987 7 held	14.8%	PBLS, PCVX, WVE
3	Jupiter Topco LLC Unknown, Diversified active	$1,273,155,140 9 held	0.520%	PCVX, AMLX, PBLS
4	T. Rowe Price Investment Management, Inc. Adviser, Diversified active	$709,619,068 1 held	0.470%	PCVX
5	SUVRETTA CAPITAL MANAGEMENT, LLC Registered adviser, Diversified active	$595,844,197 4 held	12.5%	MANE, FTH, LXEO
6	Deep Track Capital, LP Adviser, Diversified active	$562,551,800 3 held	8.57%	PCVX, MANE, AVTX
7	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$503,416,623 14 held	0.020%	PCVX, PBLS, AMLX
8	WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active	$426,267,197 8 held	0.070%	PCVX, MANE, AMLX
9	Avoro Capital Advisors LLC Registered adviser, Concentrated	$396,034,550 4 held	3.56%	QURE, AVTX, FTH
10	SR One Capital Management, LP Registered adviser, Concentrated	$366,287,911 2 held	35.3%	MANE, ODTX

Fund Ownership of GUTS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 4.47% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.79%	+0.05 pp	104,179	8
Index ETFs	3.69%	+0.10 pp	489,104	2
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.10%	-0.06 pp	13,344	2
Unclassified	0.00%	0.00 pp	0	0
All registered funds	4.57%	+0.09 pp	606,627	12

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 34 Exempt adviser 3 Bank 9 Broker-dealer 2 Non-US 2 Holding company 5 Unknown 22

Showing 77 of 77

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Nantahala Capital Management, LLC

$8,963,542

15.96%

11,289,096

Catalio Capital Management, LP

$4,897,986

8.72%

6,168,749

VANGUARD CAPITAL MANAGEMENT LLC

$4,840,959

8.62%

6,096,926

BANK OF AMERICA CORP /DE/

$4,791,111

8.53%

6,034,147

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	20,969	$16,649	0.3%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	156,992	$124,651	2.6%	Defined
BOFA SECURITIES, INC.	5,856,186	$4,649,811	97.1%	Defined

Pale Fire Capital SE

$3,972,570

7.07%

5,003,237

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Barta Jan joint	5,003,237	$3,972,570	100.0%	Defined

General Catalyst Group Management, LLC

$3,878,043

6.90%

4,884,186

Deer Management Co. LLC

$3,788,095

6.74%

4,770,901

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Deer VII & Co. Ltd. joint	4,770,901	$3,788,095	100.0%	Defined

MAVERICK CAPITAL LTD

$3,155,995

5.62%

3,974,806

M28 Capital Management LP

$1,473,756

2.62%

1,856,117

BlackRock, Inc.

$1,430,040

2.55%

1,801,060

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	43	$34	0.0%	Sole
BlackRock Institutional Trust Company, N.A.	1,135,147	$901,306	63.0%	Sole
BlackRock Capital Investment Advisors, LLC	665,870	$528,700	37.0%	Sole

Woodline Partners LP

$1,416,172

2.52%

1,783,592

JANE STREET GROUP, LLC

$1,374,907

2.45%

1,731,622

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	533,072	$423,259	30.8%	Defined
Jane Street Global Trading, LLC	1,198,550	$951,648	69.2%	Defined

SILVERARC CAPITAL MANAGEMENT, LLC

$1,300,552

2.32%

1,637,976

UBS Group AG

$1,254,430

2.23%

1,579,889

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	15,390	$12,219	1.0%	Defined
UBS AG	1,314,383	$1,043,620	83.2%	Defined
UBS Europe SE	239,299	$190,003	15.1%	Defined
UBS Securities LLC	10,817	$8,588	0.7%	Defined

CM Management, LLC

$1,111,599

1.98%

1,400,000

GEODE CAPITAL MANAGEMENT, LLC

$1,045,174

1.86%

1,316,341

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	238,414	$189,300	18.1%	Defined
Held directly	1,077,927	$855,874	81.9%	Defined

Ikarian Capital, LLC

$873,399

1.55%

1,100,000

MARSHALL WACE, LLP

$858,049

1.53%

1,080,667

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	1,080,667	$858,049	100.0%	Other

Logos Global Management LP

$793,999

1.41%

1,000,000

Brevan Howard Capital Management LP

$727,558

1.30%

916,321

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard Investment Products Ltd	916,321	$727,558	100.0%	Defined

683 Capital Management, LLC

$600,831

1.07%

756,715

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
683 Capital Partners, LP	756,715	$600,831	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$573,372

1.02%

722,132

STATE STREET CORP

$409,703

0.73%

516,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	516,000	$409,703	100.0%	Defined

MORGAN STANLEY

$338,643

0.60%

426,504

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	148	$117	0.0%	Defined
MORGAN STANLEY SMITH BARNEY LLC	426,356	$338,526	100.0%	Defined

Mink Brook Asset Management LLC

$280,079

0.50%

352,745

BOOTHBAY FUND MANAGEMENT, LLC

$218,523

0.39%

275,219

NORTHERN TRUST CORP

$207,954

0.37%

261,907

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	261,907	$207,954	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$178,282

0.32%

224,537

PEAK6 LLC

$158,799

0.28%

200,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	200,000	$158,799	100.0%	Defined

GOLDMAN SACHS GROUP INC

$139,636

0.25%

175,864

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	175,864	$139,636	100.0%	Defined

Cerity Partners LLC

$133,788

0.24%

168,500

Shay Capital LLC

$103,395

0.18%

130,221

RENAISSANCE TECHNOLOGIES LLC

$97,026

0.17%

122,200

OSAIC HOLDINGS, INC.

$84,335

0.15%

106,216

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	106,216	$84,335	100.0%	Defined

Accredited Investors Inc.

$79,399

0.14%

100,000

Conservest Capital Advisors, Inc.

$50,909

0.09%

64,118

Cambridge Investment Research Advisors, Inc.

$50,815

0.09%

64,000

HighTower Advisors, LLC

$40,844

0.07%

51,442

MAI Capital Management

$39,699

0.07%

50,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EVOKE WEALTH, LLC	50,000	$39,699	100.0%	Defined

Vanguard Global Advisers, LLC

$32,800

0.06%

41,311

Sanctuary Advisors, LLC

$25,804

0.05%

32,500

XTX Topco Ltd

$25,578

0.05%

32,215

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	32,215	$25,578	100.0%	Defined

Eaton Financial Holdings Company, LLC

$25,276

0.04%

31,835

WELLS FARGO & COMPANY/MN

$24,614

0.04%

31,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	31,000	$24,614	100.0%	Defined

Chicago Partners Investment Group LLC

$24,613

0.04%

31,000

Tower Research Capital LLC (TRC)

$21,936

0.04%

27,628

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	23,994	$19,051	86.8%	Other
Latour Trading LLC (Latour)	3,634	$2,885	13.2%	Defined

Farther Finance Advisors, LLC

$20,078

0.04%

36,909

BARTLETT & CO. WEALTH MANAGEMENT LLC

$19,849

0.04%

25,000

Brookstone Capital Management

$16,889

0.03%

21,272

J.W. COLE ADVISORS, INC.

$16,499

0.03%

20,780

LPL Financial LLC

$16,217

0.03%

20,425

RAYMOND JAMES FINANCIAL INC

$15,938

0.03%

20,074

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	17,600	$13,974	87.7%	Defined
Raymond James Financial Services Advisors, Inc.	2,474	$1,964	12.3%	Defined

Verition Fund Management LLC

$15,856

0.03%

19,971

R Squared Ltd

$15,853

0.03%

19,966

SG Americas Securities, LLC

$14,793

0.03%

18,632

Creative Planning

$13,123

0.02%

16,528

Wealthspire Advisors, LLC

$12,399

0.02%

15,617

Naviter Wealth, LLC

$12,132

0.02%

15,280

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$12,014

0.02%

15,132

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	15,132	$12,014	100.0%	Other

VICTORY CAPITAL MANAGEMENT INC

$11,917

0.02%

15,009

Catalyst Funds Management Pty Ltd

$10,103

0.02%

12,725

StoneX Group Inc.

$8,261

0.01%

10,405

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	10,405	$8,261	100.0%	Defined

Bank of New York Mellon Corp

$8,002

0.01%

10,080

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
The Bank of New York Mellon	10,079	$8,002	100.0%	Defined
Held directly	1	$0	0.0%	Defined

CITIGROUP INC

$6,234

0.01%

7,852

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	7,852	$6,234	100.0%	Defined

TFC Financial Management, Inc.

$3,969

0.01%

5,000

Triumph Capital Management

$1,631

0.00%

3,000

St. Johns Investment Management Company, LLC

$1,572

0.00%

1,980

BARCLAYS PLC

$1,480

0.00%

1,865

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	1,865	$1,480	100.0%	Defined

JPMORGAN CHASE & CO

$1,208

0.00%

1,523

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	589	$467	38.7%	Defined
J.P. Morgan Securities plc	934	$741	61.3%	Defined

Parkside Financial Bank & Trust

$1,161

0.00%

1,463

IFP Advisors, Inc

$1,087

0.00%

2,000

Avion Wealth

$827

0.00%

1,042

BNP PARIBAS ARBITRAGE, SA

$440

0.00%

555

JONES FINANCIAL COMPANIES LLLP

$396

0.00%

500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	500	$396	100.0%	Sole

Meriwether Wealth & Planning, LLC

$271

0.00%

500

SBI Securities Co., Ltd.

$96

0.00%

121

Optiver Holding B.V.

$11

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Optiver VOF	14	$11	100.0%	Defined

Key facts CIK 1572616 CUSIP 35168W103 13F (30d) 5 filings 5 filers Visit website Investor relations