MARSHALL WACE, LLP - THORATEC CORP ownership

THORATEC CORP's ticker is THOR and the CUSIP is 885175307. A total of 181 filers reported holding THORATEC CORP in Q1 2015. The put-call ratio across all filers is 0.88 and the average weighting 0.3%.

Quarter-by-quarter ownership
MARSHALL WACE, LLP ownership history of THORATEC CORP
ValueSharesWeighting
Q3 2015$2,885,000
-7.4%
45,599
-34.8%
0.04%
-14.6%
Q2 2015$3,116,000
+393.0%
69,923
+363.6%
0.04%
+412.5%
Q1 2015$632,000
-25.5%
15,084
-42.3%
0.01%
-27.3%
Q4 2014$848,00026,1220.01%
Other shareholders
THORATEC CORP shareholders Q1 2015
NameSharesValueWeighting ↓
ORACLE INVESTMENT MANAGEMENT INC 1,904,949$59,643,953,00010.29%
KING INVESTMENT ADVISORS INC/TX 200,620$6,281,0002.60%
SECTOR GAMMA AS 200,000$6,262,0001.83%
Cohen Capital Management, Inc. 150,165$4,702,0001.50%
PRIO WEALTH LIMITED PARTNERSHIP 522,673$16,364,0000.98%
Marshall Wace North America L.P. 364,926$11,426,0000.90%
PALISADE CAPITAL MANAGEMENT, LP 890,359$27,877,0000.80%
Waterstone Capital Management, L.P. 269,500$8,438,0000.75%
Cortina Asset Management, LLC 549,936$17,218,0000.68%
Baldwin Investment Management, LLC 43,500$1,362,0000.67%
View complete list of THORATEC CORP shareholders