SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 106 filers reported holding SPARK THERAPEUTICS INC in Q1 2016. The put-call ratio across all filers is 4.18 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2016 | $2,312,000 | +17.5% | 38,490 | 0.0% | 0.10% | +8.4% |
| Q2 2016 | $1,968,000 | -46.2% | 38,490 | -69.0% | 0.10% | -46.6% |
| Q1 2016 | $3,658,000 | -26.2% | 123,970 | +13.4% | 0.18% | -23.9% |
| Q4 2015 | $4,954,000 | +227.6% | 109,340 | +335.9% | 0.23% | +225.0% |
| Q2 2015 | $1,512,000 | +8.2% | 25,084 | -0.1% | 0.07% | +2.9% |
| Q1 2015 | $1,397,000 | – | 25,099 | – | 0.07% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Twin Securities, Inc. | 290,793 | $28,201,000 | 17.00% |
| Boxer Capital, LLC | 1,650,000 | $160,017,000 | 11.60% |
| One68 Global Capital, LLC | 48,066 | $4,661,000 | 10.64% |
| EcoR1 Capital, LLC | 714,789 | $69,320,000 | 8.75% |
| Casdin Capital, LLC | 863,300 | $83,722,834,000 | 8.66% |
| STANSBERRY ASSET MANAGEMENT, LLC | 168,629 | $16,354,000 | 7.23% |
| HAVENS ADVISORS LLC | 81,300 | $7,884,000 | 7.17% |
| Chicago Capital Management, LLC | 121,000 | $11,735,000 | 6.12% |
| GARDNER LEWIS ASSET MANAGEMENT L P | 364,397 | $35,339,000 | 5.29% |
| Sandell Asset Management Corp. | 153,000 | $14,838,000 | 4.99% |