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GUTS in the 13F filings

Fractyl Health Inc · CUSIP 35168W103

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024
Quarter end
31 Dec 2025
the date the book describes
Filed
17 Feb 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 2 listed it in both
Shares listed
29,936,746
combined, among listed positions
Reported value
$66m
combined, at the quarter end

Among the 92 comparable managers: 18 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +12,037,083.

Managers listing GUTS in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Marshall Wace LLP5,926,745$13munder 0.1%Added+4,156,96913 Feb 2026 (the filing on sec.gov)
Woodline Partners LP5,506,771$12munder 0.1%Added+23717 Feb 2026 (the filing on sec.gov)
Maverick Capital Ltd4,248,492$9.3m0.10%Held013 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,863,051$4.1munder 0.1%Added+1,086,35112 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC1,862,600$4.1munder 0.1%Newnew12 Feb 2026 (the filing on sec.gov)
Millennium Management LLC1,861,418$4.1munder 0.1%Added+1,453,75117 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP1,840,136$4.0munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,442,745$3.2munder 0.1%Added+1,148,45517 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP1,298,700$2.9munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
MFS Investment Management852,344$1.9munder 0.1%Trimmed-73,50522 Jan 2026 (the filing on sec.gov)
Susquehanna International Group LLP799,457$1.8munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC592,125$1.3munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP464,738$1.0munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP365,173$803kunder 0.1%Trimmed-1,822,82617 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC228,985$504kunder 0.1%Trimmed-1,553,37117 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP178,024$392kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP171,816$378kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC147,659$325kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Quantbot Technologies LP120,434$265kunder 0.1%Newnew10 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC60,219$132kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC54,910$121kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC50,204$110kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (13)

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

01122Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
GUTS by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20242$33m20
Q2 20242$19m10
Q3 20241$11m01
Q4 20241$8.8m00
Q1 20251$5.1m00
Q2 20251$6.9m00
Q3 20252$16m10
Q4 20252$21m183
Q1 20261$1.8m021
Q2 20261$3.2m45

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

GUTS and LLY →GUTS and JNJ →GUTS and VRTX →Choose a stock to compare with GUTS →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own GUTS, latest filings →Back to the 13F Explorer →