L3VLUP
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 8 listed it in both
Shares listed
11,388,541
combined, among listed positions
Reported value
$589m
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: 17 buyers (opened or added shares) and 15 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,164,763.

Managers listing SUPN 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.

31 of 31 holders

ActionFiling
Millennium Management LLC3,315,973$171m0.07%Added+675,90715 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,705,222$88m0.14%Trimmed-27,30014 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,493,446$77munder 0.1%Added+1,040,48715 May 2026 (the filing on sec.gov)
Point72 Asset Management LP1,318,555$68m0.09%Trimmed-946,24515 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP641,319$33m0.23%Added+445,00115 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.622,450$32munder 0.1%Trimmed-85,53215 May 2026 (the filing on sec.gov)
Woodline Partners LP448,996$23m0.09%Newnew15 May 2026 (the filing on sec.gov)
Invesco Ltd412,683$21munder 0.1%Added+16,92212 May 2026 (the filing on sec.gov)
Two Sigma Investments LP271,228$14munder 0.1%Added+150,56215 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)209,370$11munder 0.1%Added+85,03915 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP202,116$10m0.08%Trimmed-27,01014 May 2026 (the filing on sec.gov)
AQR Capital Management LLC98,257$5.1munder 0.1%Trimmed-27,97315 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP90,821$4.7munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
PDT Partners LLC76,673$4.0m0.23%Held015 May 2026 (the filing on sec.gov)
Man Group PLC74,992$3.9munder 0.1%Added+43,89515 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc63,385$3.3munder 0.1%Added+10,59915 May 2026 (the filing on sec.gov)
Jane Street Group LLC57,327$3.0munder 0.1%Added+20,84512 May 2026 (the filing on sec.gov)
AllianceBernstein LP55,937$2.8munder 0.1%Added+1,84515 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC48,765$2.5munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP40,750$2.1munder 0.1%Trimmed-1,23415 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC25,524$1.3munder 0.1%Trimmed-66,92315 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd23,254$1.2munder 0.1%Held018 May 2026 (the filing on sec.gov)
Wellington Management Group LLP21,861$1.1munder 0.1%Trimmed-1,48615 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC18,131$934kunder 0.1%Trimmed-288,53413 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP11,695$605kunder 0.1%Trimmed-101,49915 May 2026 (the filing on sec.gov)
Page 1 of 2

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.
3 in Q3 2024 to 6 in Q2 2026

Tracked managers listing it, at least.

035810201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SUPN by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20141$1.1mn.a.n.a.
Q1 20151$1.3mn.a.n.a.
Q2 20152$10mn.a.n.a.
Q3 20151$10mn.a.n.a.
Q4 20152$23mn.a.n.a.
Q1 20163$38mn.a.n.a.
Q2 20162$33mn.a.n.a.
Q3 20161$43mn.a.n.a.
Q4 20161$42mn.a.n.a.
Q1 20171$51mn.a.n.a.
Q2 20172$68mn.a.n.a.
Q3 20173$53mn.a.n.a.
Q4 20171$51mn.a.n.a.
Q1 20185$70mn.a.n.a.
Q2 20183$122mn.a.n.a.
Q3 20182$45mn.a.n.a.
Q4 20185$50mn.a.n.a.
Q1 20195$61mn.a.n.a.
Q2 20196$54mn.a.n.a.
Q3 20193$46mn.a.n.a.
Q4 20196$28mn.a.n.a.
Q1 20207$29mn.a.n.a.
Q2 20204$33mn.a.n.a.
Q3 20203$49mn.a.n.a.
Q4 20201$47mn.a.n.a.
Q1 20211$46mn.a.n.a.
Q2 20212$48mn.a.n.a.
Q3 20213$40mn.a.n.a.
Q4 20212$36mn.a.n.a.
Q1 20224$62mn.a.n.a.
Q2 20224$62mn.a.n.a.
Q3 20225$75mn.a.n.a.
Q4 20225$53mn.a.n.a.
Q1 20233$55mn.a.n.a.
Q2 20232$45mn.a.n.a.
Q3 20231$40mn.a.n.a.
Q4 20231$40m01
Q1 20243$91m21
Q2 20241$45m12
Q3 20243$61m30
Q4 20243$75m21
Q1 20253$54m12
Q2 20253$80m30
Q3 20256$244m51
Q4 20259$381m1714
Q1 20268$399m1715
Q2 20266$299m1516

Compare with…

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

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

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