WATER ISLAND CAPITAL LLC - OPTIMER PHARMACEUTICALS INC ownership

Quarter-by-quarter ownership
WATER ISLAND CAPITAL LLC ownership history of OPTIMER PHARMACEUTICALS INC
ValueSharesWeighting
Q3 2013$37,042,000
+8318.6%
2,939,810
+9565.7%
1.43%
+6714.3%
Q2 2013$440,00030,4150.02%
Other shareholders
OPTIMER PHARMACEUTICALS INC shareholders Q4 2013
NameSharesValueWeighting ↓
GABELLI & Co INVESTMENT ADVISERS, INC. 796,617$10,029,0002.18%
LONGFELLOW INVESTMENT MANAGEMENT CO LLC 757,000$9,531,0001.51%
WATER ISLAND CAPITAL LLC 2,939,810$37,042,0001.43%
SECTOR GAMMA AS 376,393$4,739,0001.22%
ALPINE ASSOCIATES ADVISORS 2,213,127$27,885,0001.12%
BB BIOTECH AG 1,422,200$17,905,0000.97%
TOURADJI CAPITAL MANAGEMENT, LP 25,000$315,0000.97%
JET CAPITAL INVESTORS L P 1,027,589$12,937,0000.94%
DAVIDSON KEMPNER CAPITAL MANAGEMENT LLC 1,845,022$23,229,0000.77%
Standard Investments LLC 256,160$3,225,0000.62%
View complete list of OPTIMER PHARMACEUTICALS INC shareholders