SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 207 filers reported holding SPARK THERAPEUTICS INC in Q1 2019. The put-call ratio across all filers is 5.87 and the average weighting 1.0%.
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 ↓ |
|---|---|---|---|
| Casdin Capital, LLC | 93,500 | $5,616,000 | 4.55% |
| Rock Springs Capital Management LP | 625,000 | $37,538,000 | 2.35% |
| Bain Capital Public Equity Management, LLC | 367,314 | $22,061,000 | 1.43% |
| EcoR1 Capital, LLC | 68,600 | $4,120,000 | 1.26% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 368,000 | $22,102,000 | 1.03% |
| Baker Brothers Advisors | 1,318,341 | $79,180,000 | 0.72% |
| Eventide Asset Management | 150,000 | $9,009,000 | 0.55% |
| FEDERATED HERMES, INC. | 1,633,900 | $98,132,000 | 0.28% |
| Iguana Healthcare Management, LLC | 25,000 | $1,502,000 | 0.27% |
| BAILARD, INC. | 40,600 | $2,442,000 | 0.22% |