Sarissa Capital Management LP
Sarissa Capital Management LP reported 10 US-listed holdings worth $177.9 million in its 13F for the quarter ended 30 June 2026, filed 14 August 2026. Its largest: Innoviva, Inc. (24.1%), Ironwood Pharmaceuticals Inc. (21.7%) and Amarin Corp. PLC ADR (15.0%). Against the quarter before, it opened 1 position, added to 1, trimmed 1 and sold out of 0.
The 10 largest of its 10 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.
What the fund reported holding at each quarter's end; hover a bar for the number of positions
What its reported holdings returned
Held through each quarter, the holdings it reported returned +41.2% over the 7 quarters to 30 June 2026, against +30.2% for the S&P 500.
Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.
What it did on the quarter
Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held
Opened 1
- Biogen Inc. BIIB$205,257
Added to 1
- Biohaven Ltd BHVN+19,128 shares · +3%
Trimmed 1
- Innoviva, Inc. INVA-240,346 shares · -11%
What it holds
| Company | Shares | Value | Of its book | Change in shares |
|---|---|---|---|---|
| Innoviva, Inc. INVA | 1.9M | $42.9 million | 24.14% | -240.3K |
| Ironwood Pharmaceuticals Inc. IRWD | 9.2M | $38.7 million | 21.75% | no change |
| Amarin Corp. PLC ADR AMRN | 1.7M | $26.7 million | 15.00% | no change |
| Neurocrine Biosciences Inc. NBIX | 116.5K | $19.6 million | 11.04% | no change |
| Cytokinetics Inc. CYTK | 228.6K | $19.5 million | 10.95% | no change |
| Lantheus Holdings, Inc. LNTH | 166.9K | $18.5 million | 10.41% | no change |
| Biohaven Ltd BHVN | 582.3K | $8.7 million | 4.87% | +19.1K |
| Regeneron Pharmaceuticals, Inc. REGN | 4.2K | $2.6 million | 1.47% | no change |
| Vor Biopharma Inc. VOR | 25.4K | $467,596 | 0.26% | no change |
| Biogen Inc. BIIB | 950 | $205,257 | 0.12% | new |