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ANAB in the 13F filings

Anaptysbio Inc · CUSIP 032724106

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
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
19 Feb 2026
latest of these filings; the earliest 10 Feb 2026
Managers listing it
24
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 4 listed it in both
Shares listed
6,227,407
combined, among listed positions
Reported value
$302m
combined, at the quarter end

Among the 92 comparable managers: 12 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -719,252.

Managers listing ANAB 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.

24 of 24 holders

ActionFiling
Point72 Asset Management LP1,932,890$94m0.10%Trimmed-332,63817 Feb 2026 (the filing on sec.gov)
Millennium Management LLC813,571$39munder 0.1%Trimmed-705,65917 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.670,288$32munder 0.1%Added+320,92817 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP559,744$27munder 0.1%Added+189,28613 Feb 2026 (the filing on sec.gov)
Woodline Partners LP501,023$24m0.09%Held017 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP356,700$17munder 0.1%Trimmed-17,00017 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP256,635$12munder 0.1%Added+21517 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC229,137$11munder 0.1%Added+219,81617 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC160,731$7.8munder 0.1%Added+92,71713 Feb 2026 (the filing on sec.gov)
Invesco Ltd124,006$6.0munder 0.1%Added+81,62519 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC109,483$5.3munder 0.1%Added+83,00317 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC84,447$4.1munder 0.1%Trimmed-96,66512 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP83,313$4.0munder 0.1%Added+56,81317 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC76,300$3.7munder 0.1%Trimmed-47,00012 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP61,187$3.0munder 0.1%Trimmed-5,54417 Feb 2026 (the filing on sec.gov)
PDT Partners LLC43,001$2.1m0.14%Held017 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP30,520$1.5munder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)27,108$1.3munder 0.1%Trimmed-26,05417 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC26,309$1.3munder 0.1%Added+13517 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc26,005$1.3munder 0.1%Trimmed-273,30617 Feb 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC24,431$1.2munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp17,305$839kunder 0.1%Added+3,43617 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd7,464$362kunder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC5,809$280kunder 0.1%Newnew10 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 (2)

Exited (5)

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.
3 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

02468201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ANAB by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20171$8.6mn.a.n.a.
Q4 20175$544mn.a.n.a.
Q1 20188$673mn.a.n.a.
Q2 20184$271mn.a.n.a.
Q3 20186$860mn.a.n.a.
Q4 20185$579mn.a.n.a.
Q1 20196$670mn.a.n.a.
Q2 20195$350mn.a.n.a.
Q3 20195$190mn.a.n.a.
Q4 20192$2.4mn.a.n.a.
Q1 20203$3.7mn.a.n.a.
Q2 20202$6.2mn.a.n.a.
Q3 20201$948kn.a.n.a.
Q4 20202$17mn.a.n.a.
Q1 20211$9.2mn.a.n.a.
Q2 20211$14mn.a.n.a.
Q3 20212$32mn.a.n.a.
Q4 20213$31mn.a.n.a.
Q1 20222$53mn.a.n.a.
Q2 20222$36mn.a.n.a.
Q3 20222$93mn.a.n.a.
Q4 20222$86mn.a.n.a.
Q1 20232$47mn.a.n.a.
Q2 20232$51mn.a.n.a.
Q3 20233$17mn.a.n.a.
Q4 20234$45m22
Q1 20243$34m22
Q2 20241$6.3m01
Q3 20243$22m30
Q4 20241$6.4m12
Q1 20253$60m30
Q2 20253$67m12
Q3 20254$97m12
Q4 20254$137m1213
Q1 20262$20m1612
Q2 20261$48m1217

Compare with…

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

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

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