SPARK THERAPEUTICS INC's ticker is ONCE and the CUSIP is 84652J103. A total of 170 filers reported holding SPARK THERAPEUTICS INC in Q3 2017. The put-call ratio across all filers is 1.40 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2018 | $1,120,000 | -68.5% | 28,618 | -56.2% | 0.01% | -69.8% |
| Q3 2018 | $3,560,000 | +205.6% | 65,266 | +272.9% | 0.04% | +126.3% |
| Q1 2018 | $1,165,000 | +214.0% | 17,500 | +320.6% | 0.02% | +171.4% |
| Q3 2017 | $371,000 | -24.0% | 4,161 | -54.5% | 0.01% | -46.2% |
| Q1 2017 | $488,000 | +3.6% | 9,151 | -12.0% | 0.01% | -75.0% |
| Q4 2015 | $471,000 | – | 10,400 | – | 0.05% | – |
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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% |