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
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2019 | $61,000 | +7.0% | 637 | +13.3% | 0.00% | – |
| Q2 2019 | $57,000 | -12.3% | 562 | 0.0% | 0.00% | – |
| Q1 2019 | $65,000 | +25.0% | 562 | -57.8% | 0.00% | – |
| Q4 2018 | $52,000 | -36.6% | 1,332 | -11.4% | 0.00% | -100.0% |
| Q3 2018 | $82,000 | +127.8% | 1,503 | +181.5% | 0.00% | – |
| Q2 2018 | $36,000 | 0.0% | 534 | 0.0% | 0.00% | – |
| Q1 2018 | $36,000 | +20.0% | 534 | -5.0% | 0.00% | – |
| Q4 2017 | $30,000 | +900.0% | 562 | +1378.9% | 0.00% | – |
| Q3 2017 | $3,000 | +50.0% | 38 | 0.0% | 0.00% | – |
| Q2 2017 | $2,000 | 0.0% | 38 | 0.0% | 0.00% | – |
| Q1 2017 | $2,000 | 0.0% | 38 | 0.0% | 0.00% | – |
| Q4 2016 | $2,000 | 0.0% | 38 | 0.0% | 0.00% | – |
| Q3 2016 | $2,000 | – | 38 | – | 0.00% | – |
| Q1 2015 | $0 | – | 0 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Sofinnova Management VIII, L.L.C. | 904,986 | $45,159,000 | 25.41% |
| Casdin Capital, LLC | 128,500 | $6,412,000 | 5.30% |
| Rock Springs Capital Management LP | 625,000 | $31,188,000 | 2.09% |
| Bain Capital Public Equity Management, LLC | 656,226 | $32,746,000 | 1.14% |
| Ghost Tree Capital, LLC | 80,000 | $3,992,000 | 0.96% |
| Baker Brothers Advisors | 1,318,341 | $65,785,000 | 0.64% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 283,000 | $14,122,000 | 0.58% |
| Eventide Asset Management | 150,000 | $7,485,000 | 0.49% |
| Endurant Capital Management LP | 14,800 | $739,000 | 0.30% |
| HIGHLAND CAPITAL MANAGEMENT LP | 112,000 | $5,589,000 | 0.26% |