MAST THERAPEUTICS INC's ticker is MSTX and the CUSIP is 576314108. A total of 37 filers reported holding MAST THERAPEUTICS INC in Q4 2015. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GREAT POINT PARTNERS LLC | 5,442,400 | $2,390,000 | 1.66% |
| Ancora Advisors LLC | 1,848,045 | $811,000 | 0.14% |
| SABBY MANAGEMENT, LLC | 3,639,571 | $1,598,000 | 0.10% |
| Alyeska Investment Group, L.P. | 1,900,000 | $1,668,000 | 0.07% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 2,634,221 | $1,156,000 | 0.05% |
| SHEPHERD KAPLAN KROCHUK, LLC | 602,776 | $265,000 | 0.04% |
| PERKINS CAPITAL MANAGEMENT INC | 110,000 | $48,000 | 0.03% |
| MILLENNIUM MANAGEMENT LLC | 2,900,000 | $1,273,000 | 0.00% |
| FRANKLIN RESOURCES INC | 12,046,100 | $5,288,000 | 0.00% |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 200,000 | $88,000,000 | 0.00% |