SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 164 filers reported holding SPARK THERAPEUTICS INC in Q4 2017. The put-call ratio across all filers is 1.37 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2018 | $19,000 | +11.8% | 221 | -11.2% | 0.00% | – |
| Q1 2018 | $17,000 | +183.3% | 249 | +116.5% | 0.00% | – |
| Q4 2017 | $6,000 | -60.0% | 115 | -29.9% | 0.00% | – |
| Q3 2017 | $15,000 | +87.5% | 164 | +28.1% | 0.00% | – |
| Q2 2017 | $8,000 | +14.3% | 128 | -1.5% | 0.00% | – |
| Q1 2017 | $7,000 | – | 130 | – | 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% |