Institutional Holders (2026 Q1)
187 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in STOK. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | Lynx1 Capital Management LP | 24.51% | 4,763,673 | $155.1M |
| 2 | Redmile Group, LLC | 8.98% | 4,164,120 | $135.6M |
| 3 | Birchview Capital, LP | 3.89% | 210,000 | $6.8M |
| 4 | Opaleye Management Inc. | 3.00% | 700,000 | $22.8M |
| 5 | BVF INC/IL | 2.64% | 2,547,557 | $82.9M |
| 6 | MPM BioImpact LLC | 1.93% | 767,038 | $25.0M |
| 7 | RTW INVESTMENTS, LP | 1.82% | 5,623,525 | $183.1M |
| 8 | Siren, L.L.C. | 1.80% | 1,995,347 | $65.0M |
| 9 | Quantedge Capital Pte Ltd | 1.40% | 78,600 | $2.6M |
| 10 | Troluce Capital Advisors LLC | 1.30% | 652,800 | $21.3M |
| 11 | Parkman Healthcare Partners LLC | 1.13% | 336,519 | $11.0M |
| 12 | DAFNA Capital Management LLC | 0.97% | 130,875 | $4.3M |
| 13 | TANG CAPITAL MANAGEMENT LLC | 0.83% | 500,000 | $16.3M |
| 14 | DEERFIELD MANAGEMENT COMPANY, L.P. | 0.70% | 1,823,500 | $59.4M |
| 15 | BAKER BROS. ADVISORS LP | 0.62% | 3,336,697 | $108.6M |
| 16 | HUSSMAN STRATEGIC ADVISORS, INC. | 0.59% | 84,000 | $2.7M |
| 17 | HighVista Strategies LLC | 0.56% | 62,617 | $2.0M |
| 18 | Granahan Investment Management, LLC | 0.53% | 335,586 | $10.9M |
| 19 | Palo Alto Investors LP | 0.42% | 84,631 | $2.8M |
| 20 | Harvest Investment Services, LLC | 0.37% | 62,838 | $2.0M |
| 21 | Privium Fund Management B.V. | 0.34% | 50,000 | $1.6M |
| 22 | PLATINUM INVESTMENT MANAGEMENT LTD | 0.33% | 40,815 | $1.3M |
| 23 | Rhenman & Partners Asset Management AB | 0.33% | 83,000 | $2.7M |
| 24 | PSP Research LLC | 0.28% | 12,000 | $391K |
| 25 | Informed Momentum Co LLC | 0.20% | 52,000 | $1.7M |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|