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BFLY in the 13F filings

Butterfly Network Inc · CUSIP 124155102

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 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 11 Feb 2026
Managers listing it
23
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
27,911,157
combined, among listed positions
Reported value
$106m
combined, at the quarter end

Among the 92 comparable managers: 16 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +4,811,692.

Managers listing BFLY 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.

23 of 23 holders

ActionFiling
Glenview Capital Management LLC14,335,055$54m1.11%Added+4,379,91117 Feb 2026 (the filing on sec.gov)
ARK Investment Management LLC6,244,427$24m0.16%Added+99,07911 Feb 2026 (the filing on sec.gov)
Millennium Management LLC3,174,053$12munder 0.1%Added+1,653,16817 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC867,606$3.3munder 0.1%Added+498,91412 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC716,712$2.7munder 0.1%Added+597,46213 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC489,718$1.9munder 0.1%Trimmed-2,198,65517 Feb 2026 (the filing on sec.gov)
Polen Capital Management LLC472,971$1.8munder 0.1%Newnew12 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP419,574$1.6munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Invesco Ltd387,881$1.5munder 0.1%Added+60,53819 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP192,000$730kunder 0.1%Added+105,70017 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC172,391$655kunder 0.1%Held013 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc116,395$443kunder 0.1%Added+14,44617 Feb 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC81,320$309kunder 0.1%Trimmed-362,79117 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.66,791$254kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)47,249$180kunder 0.1%Added+7,37617 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP34,670$132kunder 0.1%Trimmed-1,011,95617 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP20,437$78kunder 0.1%Trimmed-1,66117 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC19,631$75kunder 0.1%Trimmed-7,94517 Feb 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP15,620$59kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP11,596$44kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP11,000$42kunder 0.1%Trimmed-5,90017 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP10,011$38kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC4,049$15kunder 0.1%Newnew13 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 (7)

Exited (1)

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.
2 in Q3 2024 to 5 in Q2 2026

Tracked managers listing it, at least.

0246202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
BFLY by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20201$19mn.a.n.a.
Q1 20213$191mn.a.n.a.
Q2 20213$215mn.a.n.a.
Q3 20213$148mn.a.n.a.
Q4 20213$98mn.a.n.a.
Q1 20223$71mn.a.n.a.
Q2 20223$45mn.a.n.a.
Q3 20223$86mn.a.n.a.
Q4 20223$43mn.a.n.a.
Q1 20232$33mn.a.n.a.
Q2 20232$48mn.a.n.a.
Q3 20232$24mn.a.n.a.
Q4 20232$23m10
Q1 20242$21m01
Q2 20242$16m01
Q3 20242$33m11
Q4 20243$54m11
Q1 20253$58m20
Q2 20254$50m11
Q3 20252$31m02
Q4 20253$80m167
Q1 20263$81m189
Q2 20265$183m198

Compare with…

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

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

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 BFLY, latest filings →Back to the 13F Explorer →