Recent 13F filings as of September 2025 show that 203 institutional investors hold a position in Kiniksa Pharmaceuticals International, plc (NASDAQ:KNSA).
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| Rubric Capital Management LP | 30 Sep, 2025 | 4,000,000 | 90,194 | 2.31% | $155,320,000.00 |
| VANGUARD GROUP INC | 30 Sep, 2025 | 3,063,135 | -68,467 | -2.19% | $118,941,532.00 |
| BAKER BROS. ADVISORS LP | 30 Sep, 2025 | 2,824,669 | 0 | 0.00% | $109,681,897.00 |
| TANG CAPITAL MANAGEMENT LLC | 30 Sep, 2025 | 2,328,609 | 0 | 0.00% | $90,419,887.00 |
| Fairmount Funds Management LLC | 30 Sep, 2025 | 1,772,839 | 0 | 0.00% | $68,839,338.00 |
| ACADIAN ASSET MANAGEMENT LLC | 30 Sep, 2025 | 1,618,521 | 350,532 | 27.64% | $62,824.00 |
| MORGAN STANLEY | 30 Sep, 2025 | 1,362,923 | 296,644 | 27.82% | $52,922,329.00 |
| D. E. Shaw & Co., Inc. | 30 Sep, 2025 | 1,134,186 | 342,881 | 43.33% | $44,040,443.00 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 30 Sep, 2025 | 1,068,263 | 332,846 | 45.26% | $41,480,652.00 |
| MILLENNIUM MANAGEMENT LLC | 30 Sep, 2025 | 1,014,125 | -5,843 | -0.57% | $39,378,474.00 |
| Pictet Asset Management Holding SA | 30 Sep, 2025 | 932,096 | -52,501 | -5.33% | $36,193,288.00 |
| FMR LLC | 30 Sep, 2025 | 799,755 | -7,143 | -0.89% | $31,054,496.00 |
| Connor, Clark & Lunn Investment Management Ltd. | 30 Sep, 2025 | 725,355 | 101,666 | 16.30% | $28,165,535.00 |
| Qube Research & Technologies Ltd | 30 Sep, 2025 | 689,888 | -198,476 | -22.34% | $26,788,351.00 |
| Parkman Healthcare Partners LLC | 30 Sep, 2025 | 671,592 | 182,796 | 37.40% | $26,077,917.00 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | 30 Sep, 2025 | 654,585 | 6,605 | 1.02% | $25,417,536.00 |
| BNP PARIBAS FINANCIAL MARKETS | 30 Sep, 2025 | 653,411 | 227,464 | 53.40% | $25,371,949.00 |
| BRAIDWELL LP | 30 Sep, 2025 | 643,180 | -459,400 | -41.67% | $24,974,679.00 |
| DIMENSIONAL FUND ADVISORS LP | 30 Sep, 2025 | 632,123 | -16,213 | -2.50% | $24,545,132.00 |
| Caption Management, LLC | 30 Sep, 2025 | 592,600 | -779,900 | -56.82% | $23,010,658.00 |