ABVX — ABIVAX SA
As of Q2 2026, 28 SEC-registered investment managers reported holding ABVX (ABIVAX SA) in their latest 13F filings, with a combined reported value of $1.78B across 13.69M shares. That is -5.1% by share count (-733.71K shares) versus the previous quarter, while reported value moved +16.7%. Ownership is concentrated: the five largest holders account for 71.8% of reported value and the top ten for 91.2%.
Compared with the prior quarter, 6 opened new positions, 10 added to existing stakes, 11 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
ABVX is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Citadel Advisors history | Q2 2026 | 4.24M | $565.52M | 0.07% | Add |
| UBS Group AG history | Q2 2026 | 1.86M | $247.95M | 0.03% | Reduce |
| Morgan Stanley history | Q2 2026 | 1.43M | $190.85M | 0.01% | Reduce |
| Norges Bank Investment Management history | Q2 2026 | 1.10M | $146.59M | 0.01% | New |
| Bank of America Corp history | Q2 2026 | 971.44K | $129.45M | 0.01% | Add |
| Goldman Sachs Group history | Q2 2026 | 792.71K | $105.64M | 0.01% | Add |
| Deutsche Bank AG history | Q4 2025 | 764.90K | $103.15M | 0.03% | New |
| Janus Henderson Group history | Q1 2026 | 878.83K | $98.01M | 0.05% | Add |
| Balyasny Asset Management history | Q2 2026 | 624.44K | $83.21M | 0.11% | Add |
| BlackRock Inc history | Q2 2026 | 574.06K | $76.50M | 0.00% | Add |
| Millennium Management history | Q2 2026 | 307.64K | $41.00M | 0.02% | Reduce |
| Franklin Resources history | Q2 2026 | 299.75K | $39.95M | 0.01% | Reduce |
| Principal Global Investors history | Q2 2026 | 257.68K | $34.34M | 0.02% | Reduce |
| Fidelity Management & Research (FMR) history | Q2 2026 | 191.69K | $25.54M | 0.00% | Reduce |
| D. E. Shaw & Co history | Q2 2026 | 130.36K | $17.37M | 0.01% | Add |
| Wellington Management Group history | Q2 2026 | 123.29K | $16.43M | 0.00% | New |
| Farallon Capital Management history | Q2 2026 | 122.00K | $16.26M | 0.07% | Add |
| Wells Fargo & Co history | Q2 2026 | 98.08K | $13.07M | 0.00% | Add |
| Point72 Asset Management history | Q2 2026 | 85.83K | $11.44M | 0.01% | Reduce |
| Marshall Wace history | Q4 2025 | 59.76K | $8.06M | 0.01% | Reduce |
New Positions (Q2 2026)
- Norges Bank Investment Management 1.10M sh · $146.59M
- Wellington Management Group 123.29K sh · $16.43M
- Royce & Associates 45.10K sh · $6.01M
- Maverick Capital 40.00K sh · $5.33M
- JPMorgan Chase & Co 5.72K sh · $549.79K
- Charles Schwab Investment Management 3.32K sh · $442.56K
Fully Exited (vs previous quarter)
- Janus Henderson Group sold 878.83K sh · $98.01M
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Citadel Advisors | 732.87K | 551.51K | 454.76K | 466.43K | 855.68K | 1.37M | 1.25M | 695.68K | 1.08M | 1.34M | 4.24M |
| UBS Group AG | — | 3 | — | 691 | 174.87K | 162.55K | 167.66K | 4.46M | 4.42M | 4.55M | 1.86M |
| Morgan Stanley | 427.95K | 593.46K | 563.55K | 504.75K | 479.33K | 497.15K | 475.28K | 1.47M | 3.15M | 1.70M | 1.43M |
| Norges Bank Investment Management | — | — | — | — | — | — | — | — | — | — | 1.10M |
| Bank of America Corp | — | 2.27K | 2.82K | 3.55K | 5.54K | 10.71K | 536 | 95.59K | 522.29K | 735.73K | 971.44K |
| Goldman Sachs Group | — | — | — | — | — | — | — | 135.63K | 263.53K | 348.80K | 792.71K |
| Balyasny Asset Management | — | — | — | — | — | — | — | 160.22K | 493.32K | 213.69K | 624.44K |
| BlackRock Inc | — | — | — | — | — | — | — | — | 436.71K | 427.33K | 574.06K |
| Millennium Management | 130.32K | 137.81K | 77.60K | 645.64K | 931.18K | 987.41K | 1.25M | 1.10M | 741.06K | 621.09K | 307.64K |
| Franklin Resources | 1.25M | 1.40M | 1.40M | 1.32M | 1.47M | 1.37M | 1.37M | 516.09K | 449.12K | 382.83K | 299.75K |
| Principal Global Investors | — | — | — | — | — | — | — | — | 217.89K | 312.27K | 257.68K |
| Fidelity Management & Research (FMR) | 34.70K | — | — | — | — | — | — | 1.43M | 1.37M | 1.29M | 191.69K |
| D. E. Shaw & Co | — | — | — | — | — | — | — | 27.54K | 17.60K | 55.15K | 130.36K |
| Wellington Management Group | — | — | — | — | — | — | — | — | — | — | 123.29K |
| Farallon Capital Management | — | — | — | — | — | — | — | 805.00K | 387.00K | 2.00K | 122.00K |
| Wells Fargo & Co | — | — | — | — | — | — | — | 717 | 737 | 2.90K | 98.08K |
| Point72 Asset Management | 419.40K | 423.00K | 423.60K | 542.90K | 91.30K | 29.42K | 167.89K | 2.93M | 2.91M | 647.24K | 85.83K |
| Geode Capital Management | — | 14.39K | 14.39K | 15.57K | 16.75K | 16.75K | 16.82K | 29.85K | 49.93K | 51.31K | 51.87K |
| Royce & Associates | — | — | — | — | — | — | — | — | — | — | 45.10K |
| Maverick Capital | — | — | — | — | — | — | — | — | — | — | 40.00K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details