ALEXION PHARMACEUTICALS INC's ticker is and the CUSIP is 015351909. A total of 3 filers reported holding ALEXION PHARMACEUTICALS INC in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2013 | $348,000 | – | 3,000 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| SABBY MANAGEMENT, LLC | 389 | $5,176,000 | 0.33% |
| Citadel Advisors | 251,200 | $33,424,000 | 0.04% |
| Timber Hill LLC | 45,600 | $6,060,000 | 0.02% |