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

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of COMPUWARE CORP
ValueSharesWeighting
Q3 2014$237,000
-73.6%
22,298
-75.2%
0.00%
-71.4%
Q2 2014$898,000
-35.8%
89,871
-32.5%
0.01%
-41.7%
Q1 2014$1,398,000
+1170.9%
133,115
+1155.8%
0.02%
+700.0%
Q2 2013$110,00010,6000.00%
Other shareholders
COMPUWARE CORP shareholders Q4 2014
NameSharesValueWeighting ↓
Sandell Investment Services LLC 990,400$10,508,0008.54%
Sandell Asset Management Corp. 6,987,616$74,139,0007.90%
Loeb Offshore Management LP 2,612,688$27,721,0004.07%
Roumell Asset Management, LLC 338,980$3,596,0004.04%
ALPINE ASSOCIATES ADVISORS 45,712$4,308,400,0002.73%
Clearline Capital LP 1,540,840$16,348,0002.64%
ELLIOTT MANAGEMENT CORP 21,050,000$223,341,0002.54%
Burren Capital Advisors Ltd 249,700$2,649,0002.49%
LONGFELLOW INVESTMENT MANAGEMENT CO LLC 889,000$9,432,0002.32%
Stone Toro Investment Advisers, LP 87,050$924,0002.20%
View complete list of COMPUWARE CORP shareholders