MARSHALL WACE, LLP - AMAG PHARMACEUTICALS INC ownership

AMAG PHARMACEUTICALS INC's ticker is AMAG and the CUSIP is 00163U106. A total of 154 filers reported holding AMAG PHARMACEUTICALS INC in Q4 2014. The put-call ratio across all filers is 0.21 and the average weighting 0.3%.

Quarter-by-quarter ownership
MARSHALL WACE, LLP ownership history of AMAG PHARMACEUTICALS INC
ValueSharesWeighting
Q3 2015$2,398,000
-36.4%
60,364
+10.5%
0.03%
-40.8%
Q2 2015$3,771,000
-73.9%
54,616
-79.3%
0.05%
-73.9%
Q1 2015$14,453,000
+49.6%
264,411
+16.6%
0.19%
+46.9%
Q4 2014$9,664,000226,7440.13%
Other shareholders
AMAG PHARMACEUTICALS INC shareholders Q4 2014
NameSharesValueWeighting ↓
HealthInvest Partners AB 520,000$15,699,0007.39%
Palo Alto Investors LP 2,835,792$85,613,0004.76%
Opaleye Management Inc. 150,000$4,529,0001.89%
Engaged Capital LLC 61,425$1,854,0001.15%
IRONWOOD INVESTMENT MANAGEMENT LLC 91,400$2,759,0001.14%
Endurant Capital Management LP 111,180$3,357,0001.12%
AlphaOne Investment Services, LLC 86,817$2,621,0000.94%
ASHFORD CAPITAL MANAGEMENT INC 127,625$3,853,0000.91%
ARDSLEY ADVISORY PARTNERS LP 205,000$6,189,0000.81%
STELLIAM INVESTMENT MANAGEMENT, LP 685,000$20,680,0000.62%
View complete list of AMAG PHARMACEUTICALS INC shareholders