Who owns ARQT (ARQT)
Which tracked institutional funds hold ARQT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ARQT company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
49 tracked funds added or opened ARQT while 111 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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
ARQT’s largest tracked holder by dollar value, SUVRETTA CAPITAL MANAGEMENT, LLC, sizes it at 7.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 7.8pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ARQT 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
Between 2025-Q4 and 2026-Q1, across 269 tracked filers holding ARQT, 146 increased or opened the position and 140 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ARQT between the 2025-Q4 and 2026-Q1 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 20
- VANGUARD CAPITAL MANAGEMENT LLC$115M
- VANGUARD PORTFOLIO MANAGEMENT LLC$46M
- VANGUARD FIDUCIARY TRUST CO$18M
- CAPITOLIS LIQUID GLOBAL MARKETS LLC$12M
- M&G PLC$11M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$9M
Full exits 19
- VANGUARD GROUP INC$184M
- Capitolis Liquid Global Markets LLC$15M
- Informed Momentum Co LLC$6M
- TWO SIGMA ADVISERS, LP$5M
- TUDOR INVESTMENT CORP ET AL$3M
- TD Asset Management Inc$3M
Largest adds
- MARSHALL WACE, LLP$44M
- Squarepoint Ops LLC$13M
- BAMCO INC /NY/$11M
- OBERWEIS ASSET MANAGEMENT INC/$9M
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$8M
- NORGES BANK$6M
Largest trims
- JENNISON ASSOCIATES LLC$79M
- SUVRETTA CAPITAL MANAGEMENT, LLC$57M
- Frazier Life Sciences Management, L.P.$54M
- BlackRock, Inc.$47M
- Rubric Capital Management LP$45M
- GILDER GAGNON HOWE & CO LLC$28M
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 |
|---|---|---|---|---|
| SUVRETTA CAPITAL MANAGEMENT, LLC added | 12,327,000 | $290M | 8.8% | 2026-Q1 |
| Frazier Life Sciences Management, L.P. | 9,874,511 | $233M | 7.1% | 2026-Q1 |
| BlackRock, Inc. added | 9,200,411 | $217M | 6.6% | 2026-Q1 |
| Rubric Capital Management LP | 8,271,577 | $195M | 5.9% | 2026-Q1 |
| STATE STREET CORP added | 6,296,197 | $148M | 4.5% | 2026-Q1 |
| Polar Capital Holdings Plc added | 5,666,940 | $134M | 4.1% | 2026-Q1 |
| JENNISON ASSOCIATES LLC trimmed | 4,980,770 | $117M | 3.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 4,871,536 | $115M | 3.5% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 4,304,010 | $101M | 3.1% | 2026-Q1 |
| MORGAN STANLEY trimmed | 4,218,931 | $99M | 3.0% | 2026-Q1 |
| UBS Group AG added | 3,329,224 | $78M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 3,045,306 | $72M | 2.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 2,496,222 | $59M | 1.8% | 2026-Q1 |
| MARSHALL WACE, LLP added | 2,422,669 | $57M | 1.7% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 2,297,943 | $54M | 1.6% | 2026-Q1 |
| Driehaus Capital Management LLC trimmed | 2,226,029 | $52M | 1.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 2,221,289 | $52M | 1.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,954,685 | $46M | 1.4% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 1,854,566 | $44M | 1.3% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,603,013 | $38M | 1.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,463,228 | $34M | 1.0% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 1,365,941 | $32M | 1.0% | 2026-Q1 |
| Pivotal bioVenture Partners Investment Advisor LLC trimmed | 1,355,892 | $32M | 1.0% | 2026-Q1 |
| Ensign Peak Advisors, Inc trimmed | 1,244,387 | $29M | 0.9% | 2026-Q1 |
| Squarepoint Ops LLC added | 1,103,490 | $26M | 0.8% | 2026-Q1 |
| Candriam S.C.A. added | 1,086,651 | $26M | 0.8% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 1,077,267 | $25M | 0.8% | 2026-Q1 |
| BAMCO INC /NY/ added | 1,072,189 | $25M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,012,555 | $24M | 0.7% | 2026-Q1 |
| GW&K Investment Management, LLC trimmed | 988,387 | $23M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 976,512 | $23M | 0.7% | 2026-Q1 |
| Perpetual Ltd trimmed | 909,546 | $21M | 0.7% | 2026-Q1 |
| Nuveen, LLC trimmed | 902,134 | $21M | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 812,146 | $19M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 771,764 | $18M | 0.6% | 2026-Q1 |
| MPM BIOIMPACT LLC added | 733,966 | $17M | 0.5% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 724,067 | $17M | 0.5% | 2026-Q1 |
| Aberdeen Group plc added | 645,066 | $15M | 0.5% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 636,200 | $15M | 0.5% | 2026-Q1 |
| Nearwater Capital Markets, Ltd trimmed | 607,300 | $14M | 0.4% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 590,877 | $14M | 0.4% | 2026-Q1 |
| Eversept Partners, LP added | 576,580 | $14M | 0.4% | 2026-Q1 |
| FISHMAN JAY A LTD/MI added | 566,730 | $13M | 0.4% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 540,511 | $13M | 0.4% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 503,856 | $12M | 0.4% | 2026-Q1 |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC new | 500,000 | $12M | 0.4% | 2026-Q1 |
| M&G PLC new | 469,082 | $11M | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 461,448 | $11M | 0.3% | 2026-Q1 |
| NORGES BANK added | 679,320 | $11M | 0.3% | 2026-Q1 |
| Cormorant Asset Management, LP trimmed | 450,000 | $11M | 0.3% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 448,207 | $11M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 440,999 | $10M | 0.3% | 2026-Q1 |
| STEMPOINT CAPITAL LP added | 413,792 | $10M | 0.3% | 2026-Q1 |
| Patient Square Capital LP added | 400,645 | $9M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 389,847 | $9M | 0.3% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 366,000 | $9M | 0.3% | 2026-Q1 |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC trimmed | 357,490 | $8M | 0.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 351,217 | $8M | 0.3% | 2026-Q1 |
| Penn Capital Management Company, LLC new | 333,130 | $8M | 0.2% | 2026-Q1 |
| Privium Fund Management B.V. added | 320,972 | $8M | 0.2% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC new | 306,272 | $7M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 305,532 | $7M | 0.2% | 2026-Q1 |
| CASTLEARK MANAGEMENT LLC trimmed | 293,460 | $7M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 283,623 | $7M | 0.2% | 2026-Q1 |
| FMR LLC added | 278,736 | $7M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 256,628 | $6M | 0.2% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 256,545 | $6M | 0.2% | 2026-Q1 |
| MYDA Advisors LLC trimmed | 240,000 | $6M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 237,171 | $6M | 0.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 234,307 | $6M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 218,200 | $5M | 0.2% | 2026-Q1 |
| JUPITER ASSET MANAGEMENT LTD trimmed | 217,255 | $5M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 206,141 | $5M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 197,810 | $5M | 0.1% | 2026-Q1 |
| Woodline Partners LP | 195,033 | $5M | 0.1% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 190,014 | $4M | 0.1% | 2026-Q1 |
| Hillsdale Investment Management Inc. added | 188,220 | $4M | 0.1% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 192,920 | $4M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC added | 183,024 | $4M | 0.1% | 2026-Q1 |
| KORNITZER CAPITAL MANAGEMENT INC /KS added | 175,870 | $4M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 168,826 | $4M | 0.1% | 2026-Q1 |
| Tejara Capital Ltd trimmed | 166,191 | $4M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 161,131 | $4M | 0.1% | 2026-Q1 |
| PDT Partners, LLC | 155,075 | $4M | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 154,566 | $4M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,345,829 | $184M | 5.6% | 2025-Q4 stale |
| Paradigm Biocapital Advisors LP new | 1,465,334 | $23M | 0.7% | 2025-Q1 stale |
| Cercano Management LLC trimmed | 928,701 | $15M | 0.4% | 2025-Q1 stale |
| Capitolis Liquid Global Markets LLC new | 500,000 | $15M | 0.4% | 2025-Q4 stale |
| PFM Health Sciences, LP trimmed | 360,460 | $7M | 0.2% | 2025-Q3 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 427,433 | $7M | 0.2% | 2025-Q1 stale |
| J. Goldman & Co LP trimmed | 353,644 | $7M | 0.2% | 2025-Q3 stale |
| Informed Momentum Co LLC trimmed | 213,863 | $6M | 0.2% | 2025-Q4 stale |
| Simplify Asset Management Inc. trimmed | 317,997 | $6M | 0.2% | 2025-Q3 stale |
| ROYCE & ASSOCIATES LP added | 374,540 | $5M | 0.2% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP added | 156,100 | $5M | 0.1% | 2025-Q4 stale |
| Ally Bridge Group (NY) LLC new | 233,220 | $4M | 0.1% | 2025-Q3 stale |
| Avidity Partners Management LP trimmed | 214,400 | $4M | 0.1% | 2025-Q3 stale |
| ExodusPoint Capital Management, LP trimmed | 242,457 | $4M | 0.1% | 2025-Q1 stale |
| Vestal Point Capital, LP added | 200,000 | $4M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
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.