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 | ||||
|---|---|---|---|---|---|---|
| Q4 2017 | $514,000 | – | 10,000 | – | 0.10% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Twin Securities, Inc. | 320,653 | $32,828,000 | 11.88% |
| Casdin Capital, LLC | 884,800 | $90,585,824,000 | 8.48% |
| One68 Global Capital, LLC | 60,048 | $6,148,000 | 7.74% |
| STANSBERRY ASSET MANAGEMENT, LLC | 167,605 | $17,159,000 | 6.76% |
| EcoR1 Capital, LLC | 614,128 | $62,874,000 | 6.35% |
| Chicago Capital Management, LLC | 121,000 | $12,388,000 | 5.33% |
| Boxer Capital, LLC | 600,000 | $61,428,000 | 5.28% |
| Sandell Asset Management Corp. | 428,310 | $43,850,000 | 4.96% |
| GARDNER LEWIS ASSET MANAGEMENT L P | 375,397 | $38,433,000 | 4.71% |
| SPRING CREEK CAPITAL LLC | 126,000 | $12,900,000 | 4.65% |