L3VLUP
Quarter end
31 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
19
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
22,436,575
combined, among listed positions
Reported value
$557m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 12 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -498,435.

Managers listing IMVT in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

19 of 19 holders

ActionFiling
Fidelity (FMR LLC)16,947,888$421munder 0.1%Trimmed-42,86615 May 2026 (the filing on sec.gov)
Woodline Partners LP1,975,869$49m0.19%Held015 May 2026 (the filing on sec.gov)
Farallon Capital Management LLC1,546,000$38m0.20%Added+1,534,00015 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP617,807$15munder 0.1%Added+358,69015 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc339,607$8.4munder 0.1%Trimmed-553,44915 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC192,500$4.8munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Marshall Wace LLP165,300$4.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC144,398$3.6munder 0.1%Trimmed-10,10915 May 2026 (the filing on sec.gov)
Invesco Ltd93,894$2.3munder 0.1%Added+5,03712 May 2026 (the filing on sec.gov)
Greenlight Capital93,520$2.3m0.07%Newnew15 May 2026 (the filing on sec.gov)
AllianceBernstein LP90,410$2.3munder 0.1%Added+1,25015 May 2026 (the filing on sec.gov)
Jane Street Group LLC84,312$2.1munder 0.1%Newnew12 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd33,731$838kunder 0.1%Held018 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC33,553$833kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Wellington Management Group LLP28,525$709kunder 0.1%Trimmed-32215 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP21,941$545kunder 0.1%Trimmed-104,68014 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP19,230$478kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Quantbot Technologies LP5,359$133kunder 0.1%Added+1,75913 May 2026 (the filing on sec.gov)
Walleye Capital LLC2,731$68kunder 0.1%Added+2,73013 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, 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.
4 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

02462020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IMVT by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20192$5.7mn.a.n.a.
Q1 20201$5.1mn.a.n.a.
Q2 20201$5.6mn.a.n.a.
Q3 20203$60mn.a.n.a.
Q4 20203$34mn.a.n.a.
Q1 20213$22mn.a.n.a.
Q2 20212$41mn.a.n.a.
Q3 20211$2.1mn.a.n.a.
Q4 20211$930kn.a.n.a.
Q1 20221$745kn.a.n.a.
Q3 20222$21mn.a.n.a.
Q4 20222$24mn.a.n.a.
Q1 20233$30mn.a.n.a.
Q2 20233$49mn.a.n.a.
Q3 20235$111mn.a.n.a.
Q4 20235$205m32
Q1 20244$176m23
Q2 20245$136m40
Q3 20244$135m01
Q4 20243$51m03
Q1 20253$45m11
Q2 20254$81m31
Q3 20253$80m10
Q4 20253$101m1112
Q1 20263$90m129
Q2 20264$927m158

Compare with…

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

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

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