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 | ||||
|---|---|---|---|---|---|---|
| Q3 2018 | $955,000 | -39.2% | 17,500 | -7.9% | 0.00% | -42.9% |
| Q2 2018 | $1,572,000 | +24.3% | 19,000 | 0.0% | 0.01% | +16.7% |
| Q1 2018 | $1,265,000 | +17.1% | 19,000 | -9.5% | 0.01% | +20.0% |
| Q4 2017 | $1,080,000 | -63.6% | 21,000 | -36.9% | 0.01% | -64.3% |
| Q3 2017 | $2,967,000 | +136.4% | 33,277 | +58.5% | 0.01% | +133.3% |
| Q2 2017 | $1,255,000 | -54.1% | 21,000 | -59.1% | 0.01% | -57.1% |
| Q1 2017 | $2,737,000 | +188.7% | 51,305 | +170.0% | 0.01% | +180.0% |
| Q4 2016 | $948,000 | -9.8% | 19,000 | +8.6% | 0.01% | 0.0% |
| Q3 2016 | $1,051,000 | +46.8% | 17,500 | +25.0% | 0.01% | +25.0% |
| Q2 2016 | $716,000 | +304.5% | 14,000 | +133.3% | 0.00% | +300.0% |
| Q1 2016 | $177,000 | -60.9% | 6,000 | -44.7% | 0.00% | -50.0% |
| Q3 2015 | $453,000 | -41.5% | 10,850 | -15.6% | 0.00% | -33.3% |
| Q2 2015 | $774,000 | +5.2% | 12,850 | +35.3% | 0.00% | 0.0% |
| Q1 2015 | $736,000 | – | 9,500 | – | 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% |