PROSPECTOR PARTNERS LLC - AMAG PHARMACEUTICALS INC ownership

AMAG PHARMACEUTICALS INC's ticker is AMAG and the CUSIP is 00163U106. A total of 104 filers reported holding AMAG PHARMACEUTICALS INC in Q1 2014. The put-call ratio across all filers is 0.27 and the average weighting 0.1%.

Quarter-by-quarter ownership
PROSPECTOR PARTNERS LLC ownership history of AMAG PHARMACEUTICALS INC
ValueSharesWeighting
Q1 2015$1,383,000
-18.1%
25,300
-36.1%
0.10%
-18.8%
Q4 2014$1,688,000
+33.5%
39,6000.0%0.13%
+85.5%
Q3 2014$1,264,000
+54.0%
39,6000.0%0.07%
+76.9%
Q2 2014$821,000
+7.2%
39,6000.0%0.04%
+8.3%
Q1 2014$766,00039,6000.04%
Other shareholders
AMAG PHARMACEUTICALS INC shareholders Q1 2014
NameSharesValueWeighting ↓
Broadfin Capital, LLC 3,921,550$81,254,0004.00%
Palo Alto Investors LP 1,614,536$33,453,0002.49%
Ghost Tree Capital, LLC 100,000$2,072,0001.46%
March Altus Capital Management LP 146,418$3,034,0001.11%
IRONWOOD INVESTMENT MANAGEMENT LLC 296,458$6,143,0000.98%
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 999,339$20,706,0000.83%
Visium Asset Management, LP 2,070,870$42,908,0000.67%
AlphaOne Investment Services, LLC 97,448$2,019,0000.54%
CONTINENTAL ADVISORS LLC 57,438$1,190,0000.28%
Tamarack Capital Management, LLC 64,080$1,222,0000.25%
View complete list of AMAG PHARMACEUTICALS INC shareholders