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
20
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 10 listed it in both
Shares listed
14,689,889
combined, among listed positions
Reported value
$3.4bn
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: 7 buyers (opened or added shares) and 25 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -5,146,610.

Managers listing ASND 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.

20 of 20 holders

ActionFiling
Fidelity (FMR LLC)3,876,601$887munder 0.1%Trimmed-276,71015 May 2026 (the filing on sec.gov)
Artisan Partners LP3,230,188$739m1.19%Added+4,30313 May 2026 (the filing on sec.gov)
MFS Investment Management1,860,669$426m0.14%Trimmed-25,72414 May 2026 (the filing on sec.gov)
Wellington Management Group LLP1,757,633$402m0.08%Trimmed-5,08815 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,530,345$350munder 0.1%Trimmed-39,91515 May 2026 (the filing on sec.gov)
Capital World Investors900,517$206munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Invesco Ltd362,109$83munder 0.1%Trimmed-223,98512 May 2026 (the filing on sec.gov)
AllianceBernstein LP278,203$59munder 0.1%Trimmed-10,38915 May 2026 (the filing on sec.gov)
Two Sigma Investments LP220,341$50munder 0.1%Trimmed-27,55115 May 2026 (the filing on sec.gov)
Millennium Management LLC189,027$43munder 0.1%Trimmed-73,30215 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC117,332$27munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC114,275$26m0.10%Trimmed-101,89815 May 2026 (the filing on sec.gov)
Woodline Partners LP102,469$23m0.09%Added+815 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP91,470$21munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP28,062$6.4munder 0.1%Trimmed-442,88915 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP26,200$6.0m0.05%Trimmed-22,06015 May 2026 (the filing on sec.gov)
Polen Capital Management LLC1,812$414kunder 0.1%Added+60114 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,537$352kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,062$243kunder 0.1%Trimmed-124,70615 May 2026 (the filing on sec.gov)
Walleye Capital LLC37$8kunder 0.1%Trimmed-59113 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.
15 in Q3 2024 to 12 in Q2 2026

Tracked managers listing it, at least.

05101520201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ASND by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20171$2.1mn.a.n.a.
Q3 20172$4.7mn.a.n.a.
Q4 20171$4.8mn.a.n.a.
Q1 20186$362mn.a.n.a.
Q2 20184$310mn.a.n.a.
Q3 20183$359mn.a.n.a.
Q4 20184$638mn.a.n.a.
Q1 20198$1.7bnn.a.n.a.
Q2 20198$1.9bnn.a.n.a.
Q3 20198$1.7bnn.a.n.a.
Q4 201912$2.8bnn.a.n.a.
Q1 20209$2.3bnn.a.n.a.
Q2 20208$3.2bnn.a.n.a.
Q3 20209$4.1bnn.a.n.a.
Q4 202012$4.5bnn.a.n.a.
Q1 202110$3.4bnn.a.n.a.
Q2 202110$3.4bnn.a.n.a.
Q3 202110$4.5bnn.a.n.a.
Q4 202111$3.7bnn.a.n.a.
Q1 202210$3.3bnn.a.n.a.
Q2 20229$2.5bnn.a.n.a.
Q3 202212$2.7bnn.a.n.a.
Q4 202212$3.0bnn.a.n.a.
Q1 20239$2.6bnn.a.n.a.
Q2 20238$1.9bnn.a.n.a.
Q3 20238$2.0bnn.a.n.a.
Q4 202311$2.8bn57
Q1 202416$3.4bn106
Q2 202414$2.8bn87
Q3 202415$3.1bn115
Q4 202411$2.6bn67
Q1 202513$3.2bn76
Q2 202511$3.2bn56
Q3 202515$3.7bn68
Q4 202514$3.7bn1614
Q1 202610$3.1bn725
Q2 202612$4.3bn199

Compare with…

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

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

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