GROUP ONE TRADING, L.P. - CATAMARAN CORP ownership

CATAMARAN CORP's ticker is CTRX and the CUSIP is 148887102. A total of 341 filers reported holding CATAMARAN CORP in Q4 2014. The put-call ratio across all filers is 0.60 and the average weighting 0.3%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of CATAMARAN CORP
ValueSharesWeighting
Q2 2015$2,231,000
+50.0%
36,523
+46.2%
0.03%
+34.8%
Q1 2015$1,487,000
+962.1%
24,981
+821.8%
0.02%
+1050.0%
Q4 2014$140,000
-63.0%
2,710
-69.8%
0.00%
-66.7%
Q3 2014$378,000
+71.8%
8,964
+79.6%
0.01%
+100.0%
Q2 2014$220,000
-66.1%
4,991
-63.5%
0.00%
-70.0%
Q4 2013$649,000
-12.5%
13,673
-15.3%
0.01%
-28.6%
Q3 2013$742,000
-54.0%
16,151
-51.2%
0.01%
-65.0%
Q2 2013$1,613,00033,1050.04%
Other shareholders
CATAMARAN CORP shareholders Q4 2014
NameSharesValueWeighting ↓
BloombergSen Inc. 1,173,383$53,917,0005.74%
TIGER CONSUMER MANAGEMENT, LP 2,874,235$132,071,0005.48%
CORNERSTONE CAPITAL MANAGEMENT LLC 2,659,962$122,225,0003.77%
Redmile Group, LLC 508,100$23,347,0003.52%
ZEVENBERGEN CAPITAL INVESTMENTS LLC 2,094,845$96,258,0003.25%
Maryland Capital Management 371,276$17,060,0002.77%
Tyrus Capital S.A.M. 185,000$8,501,0002.46%
Greystone Managed Investments Inc. 3,433,870$158,080,0002.24%
Pembroke Management, LTD 450,764$20,713,0002.23%
Summit Creek Advisors LLC 270,550$12,432,0002.21%
View complete list of CATAMARAN CORP shareholders