SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 123 filers reported holding SPARK THERAPEUTICS INC in Q1 2017. The put-call ratio across all filers is 0.24 and the average weighting 0.3%.
Quarter-by-quarter ownership
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Sofinnova Management VIII, L.L.C. | 481,270 | $24,747,000 | 13.51% |
| Ice Pond Lane Advisers, LLC | 211,519 | $10,876,000 | 7.42% |
| IPL Advisers, LLC | 143,500 | $7,379,000 | 4.67% |
| Casdin Capital, LLC | 302,474 | $15,553,000 | 3.79% |
| GREAT POINT PARTNERS LLC | 410,900 | $21,128,000 | 3.60% |
| Rock Springs Capital Management LP | 615,000 | $31,623,000 | 1.44% |
| Virtus ETF Advisers LLC | 21,196 | $1,090,000 | 1.37% |
| Eventide Asset Management | 324,000 | $16,660,000 | 0.87% |
| Baker Brothers Advisors | 1,384,130 | $71,172,000 | 0.62% |
| SPHERA FUNDS MANAGEMENT LTD. | 100,000 | $5,142,000 | 0.60% |