Who owns ASND
Which tracked institutional funds hold ASND, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASND company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
15 tracked funds added or opened ASND while 6 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ASND’s largest tracked holder by dollar value, T. Rowe Price Investment Management, Inc., sizes it at 1.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ASND divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
New buyers & exits
Funds opening or closing a position in ASND between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 15
- FMR LLC$946M
- BlackRock, Inc.$590M
- Capital International Investors$530M
- WELLINGTON MANAGEMENT GROUP LLP$413M
- Capital World Investors$242M
- Invesco Ltd.$110M
Full exits 5
- T. Rowe Price Investment Management, Inc.$1.4B
- Driehaus Capital Management LLC$29M
- Q Global Advisors, LLC$23M
- Evolutionary Tree Capital Management, LLC$2M
- PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO$1M
Largest trims
- PRICE T ROWE ASSOCIATES INC /MD/$51M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC new | 3,545,575 | $946M | 19.5% | 2026-Q2 |
| BlackRock, Inc. new | 2,211,833 | $590M | 12.2% | 2026-Q2 |
| Capital International Investors new | 1,988,614 | $530M | 10.9% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 1,548,636 | $413M | 8.5% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 1,122,529 | $299M | 6.2% | 2026-Q2 |
| Capital World Investors new | 906,081 | $242M | 5.0% | 2026-Q2 |
| Invesco Ltd. new | 414,196 | $110M | 2.3% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP new | 305,803 | $82M | 1.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC new | 266,708 | $71M | 1.5% | 2026-Q2 |
| CITADEL ADVISORS LLC new | 137,889 | $37M | 0.8% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC new | 119,699 | $32M | 0.7% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. new | 31,023 | $8M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. new | 30,883 | $8M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP new | 22,503 | $6M | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL new | 16,625 | $4M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP new | 7,930 | $2M | 0.0% | 2026-Q2 |
| T. Rowe Price Investment Management, Inc. new | 6,162,042 | $1.4B | 29.1% | 2026-Q1 stale |
| Driehaus Capital Management LLC new | 127,562 | $29M | 0.6% | 2026-Q1 stale |
| Q Global Advisors, LLC new | 100,000 | $23M | 0.5% | 2026-Q1 stale |
| Evolutionary Tree Capital Management, LLC new | 9,070 | $2M | 0.0% | 2026-Q1 stale |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO new | 5,784 | $1M | 0.0% | 2026-Q1 stale |
| Legato Capital Management LLC new | 1,748 | $400K | 0.0% | 2026-Q1 stale |
| SBI Securities Co., Ltd. new | 3 | $686 | 0.0% | 2026-Q1 stale |
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.