SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 166 filers reported holding SPARK THERAPEUTICS INC in Q1 2018. The put-call ratio across all filers is 1.09 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2018 | $21,000 | -58.8% | 330 | -67.0% | 0.01% | -57.1% |
| Q4 2017 | $51,000 | -40.7% | 1,000 | -0.9% | 0.01% | -62.2% |
| Q3 2017 | $86,000 | +186.7% | 1,009 | +0.9% | 0.04% | +146.7% |
| Q2 2017 | $30,000 | -41.2% | 1,000 | 0.0% | 0.02% | -55.9% |
| Q1 2017 | $51,000 | +88.9% | 1,000 | +100.0% | 0.03% | +70.0% |
| Q4 2016 | $27,000 | – | 500 | – | 0.02% | – |
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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% |