SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 157 filers reported holding SPARK THERAPEUTICS INC in Q4 2018. The put-call ratio across all filers is 3.09 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2018 | $819,000 | -40.0% | 20,925 | -16.4% | 0.01% | -29.4% |
| Q3 2018 | $1,365,000 | -60.0% | 25,025 | -39.3% | 0.02% | -60.5% |
| Q2 2018 | $3,412,000 | +27.6% | 41,225 | +2.7% | 0.04% | +26.5% |
| Q1 2018 | $2,674,000 | +23.4% | 40,150 | -4.7% | 0.03% | +36.0% |
| Q4 2017 | $2,167,000 | -44.6% | 42,150 | -3.9% | 0.02% | -44.4% |
| Q3 2017 | $3,910,000 | +44.3% | 43,850 | -3.3% | 0.04% | +40.6% |
| Q2 2017 | $2,709,000 | -15.1% | 45,350 | -24.2% | 0.03% | -17.9% |
| Q1 2017 | $3,192,000 | +17.7% | 59,850 | +10.1% | 0.04% | +11.4% |
| Q4 2016 | $2,712,000 | -4.2% | 54,350 | +15.3% | 0.04% | +2.9% |
| Q3 2016 | $2,832,000 | -45.3% | 47,150 | -53.5% | 0.03% | +6.2% |
| Q2 2016 | $5,180,000 | +260.7% | 101,300 | +108.2% | 0.03% | +68.4% |
| Q1 2016 | $1,436,000 | -28.5% | 48,650 | +9.8% | 0.02% | -29.6% |
| Q4 2015 | $2,008,000 | +25.9% | 44,325 | +16.0% | 0.03% | +28.6% |
| Q3 2015 | $1,595,000 | +561.8% | 38,225 | +855.6% | 0.02% | +600.0% |
| Q2 2015 | $241,000 | – | 4,000 | – | 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% |