L3VLUP
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
25
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 6 listed it in both
Shares listed
24,755,413
combined, among listed positions
Reported value
$1.9bn
combined, at the quarter end

Among the 92 comparable managers: 15 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,713,220.

Managers listing KYMR 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.

25 of 25 holders

ActionFiling
Fidelity (FMR LLC)8,928,574$695munder 0.1%Added+3,048,96317 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc6,159,335$479m0.05%Added+1,061,95717 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP4,412,933$343m0.06%Trimmed-782,75817 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors1,560,791$121munder 0.1%Added+298,60911 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP952,065$74munder 0.1%Added+903,29617 Feb 2026 (the filing on sec.gov)
Holocene Advisors LP761,209$59m0.12%Trimmed-79,12417 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP373,800$29m0.06%Added+1,40017 Feb 2026 (the filing on sec.gov)
MFS Investment Management289,404$23munder 0.1%Trimmed-145,61022 Jan 2026 (the filing on sec.gov)
Two Sigma Investments LP265,532$21munder 0.1%Trimmed-164,44317 Feb 2026 (the filing on sec.gov)
Woodline Partners LP203,585$16m0.06%Trimmed-44,41517 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP173,147$13munder 0.1%Trimmed-75317 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC159,865$12munder 0.1%Added+118,04217 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC159,426$12munder 0.1%Trimmed-191,82013 Feb 2026 (the filing on sec.gov)
Invesco Ltd116,747$9.1munder 0.1%Added+36,94019 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC58,482$4.5munder 0.1%Newnew27 Oct 2026 (the filing on sec.gov)
Verition Fund Management LLC54,319$4.2munder 0.1%Added+22,84813 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP38,022$3.0munder 0.1%Trimmed-321,05413 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd21,058$1.6munder 0.1%Added+2,75017 Feb 2026 (the filing on sec.gov)
Man Group PLC20,026$1.6munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC19,181$1.5munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Millennium Management LLC11,243$875kunder 0.1%Trimmed-83,71817 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC9,339$727kunder 0.1%Added+71917 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP5,900$459kunder 0.1%Trimmed-4,84817 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC1,382$107kunder 0.1%Newnew10 Feb 2026 (the filing on sec.gov)
Quantbot Technologies LP48$4kunder 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.

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.
5 in Q3 2024 to 8 in Q2 2026

Tracked managers listing it, at least.

0246820222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
KYMR by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20202$8.3mn.a.n.a.
Q4 20201$11mn.a.n.a.
Q2 20211$1.8mn.a.n.a.
Q3 20211$7.6mn.a.n.a.
Q4 20211$171mn.a.n.a.
Q1 20222$30mn.a.n.a.
Q2 20221$2.0mn.a.n.a.
Q3 20221$2.2mn.a.n.a.
Q4 20223$226mn.a.n.a.
Q1 20233$268mn.a.n.a.
Q2 20231$2.5mn.a.n.a.
Q3 20231$1.4mn.a.n.a.
Q4 20233$150m21
Q1 20246$496m42
Q2 20244$343m31
Q3 20245$582m32
Q4 20246$536m51
Q1 20254$372m23
Q2 20255$615m32
Q3 20256$737m23
Q4 20257$1.7bn1512
Q1 20268$2.1bn1215
Q2 20268$3.0bn1213

Compare with…

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

KYMR and GILD →KYMR and AMGN →KYMR and ARGX →Choose a stock to compare with KYMR →

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