Who owns Abivax S.A.?
Institutional ownership of ABVX from SEC Form 13F filings across 172 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
172
13F holders
$2.43B
value, 2026 filers
25.7%
of shares outstanding (18.9M sh)
57
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ABVX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Jupiter Topco LLCNEW | 1.9M | $255.1M | 0.1% | 2.6% | new |
| 2 | UBS Group AG | 1.8M | $245.9M | 0.0% | 2.5% | -59.4% |
| 3 | CITADEL ADVISORS LLC | 1.4M | $191.7M | 0.0% | 2% | +164.2% |
| 4 | MORGAN STANLEY | 1.4M | $190.9M | 0.0% | 2% | -16.0% |
| 5 | NORGES BANKNEW | 1.1M | $146.6M | 0.0% | 1.5% | new |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.1M | $140.4M | 0.0% | 1.4% | +176.4% |
| 7 | BANK OF AMERICA CORP /DE/ | 971,439 | $129.5M | 0.0% | 1.3% | +32.0% |
| 8 | GOLDMAN SACHS GROUP INC | 792,712 | $105.6M | 0.0% | 1.1% | +127.3% |
| 9 | Balyasny Asset Management L.P. | 603,840 | $80.5M | 0.1% | 0.8% | +182.6% |
| 10 | BlackRock, Inc. | 574,061 | $76.5M | 0.0% | 0.8% | +34.3% |
| 11 | BOOTHBAY FUND MANAGEMENT, LLC | 563,367 | $75.1M | 1.0% | 0.8% | +19.1% |
| 12 | Aberdeen Group plc | 522,025 | $69.6M | 0.1% | 0.7% | +21.1% |
| 13 | Pictet Asset Management Holding SA | 492,068 | $65.6M | 0.1% | 0.7% | +375.2% |
| 14 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLCNEW | 410,000 | $54.6M | 1.0% | 0.6% | new |
| 15 | PRICE T ROWE ASSOCIATES INC /MD/ | 300,365 | $40,027 | 0.0% | 0.4% | -56.6% |
| 16 | FRANKLIN RESOURCES INC | 299,754 | $39.9M | 0.0% | 0.4% | -21.7% |
| 17 | HRT FINANCIAL LP | 270,612 | $36,061 | 0.0% | 0.4% | +496.4% |
| 18 | PRINCIPAL FINANCIAL GROUP INC | 257,678 | $34.3M | 0.0% | 0.4% | -17.5% |
| 19 | Two Seas Capital LPNEW | 244,590 | $32.6M | 0.6% | 0.3% | new |
| 20 | READYSTATE ASSET MANAGEMENT LP | 241,530 | $32.2M | 1.1% | 0.3% | +19.6% |
| 21 | MILLENNIUM MANAGEMENT LLC | 233,740 | $31.1M | 0.0% | 0.3% | -61.4% |
| 22 | Woodline Partners LP | 226,966 | $30.2M | 0.1% | 0.3% | -49.8% |
| 23 | Verition Fund Management LLC | 211,582 | $28.2M | 0.1% | 0.3% | +715.4% |
| 24 | JENNISON ASSOCIATES LLC | 196,524 | $26.2M | 0.0% | 0.3% | -6.7% |
| 25 | FMR LLC | 191,689 | $25.5M | 0.0% | 0.3% | -85.1% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.