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

CALPINE CORP's ticker is and the CUSIP is 131347904. A total of 5 filers reported holding CALPINE CORP in Q4 2014. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of CALPINE CORP
ValueSharesWeighting
Q4 2017$903,000
-79.4%
59,700
-79.9%
0.01%
-85.0%
Q3 2017$4,390,000
+5.4%
297,600
-3.4%
0.04%
-7.0%
Q2 2017$4,167,000
+1437.6%
308,000
+1157.1%
0.04%
+1333.3%
Q1 2017$271,000
-86.2%
24,500
-85.8%
0.00%
-84.2%
Q4 2016$1,966,000
-2.0%
172,000
+8.3%
0.02%
-13.6%
Q3 2016$2,007,000
-45.1%
158,800
-35.9%
0.02%
-48.8%
Q2 2016$3,655,000
+50.8%
247,800
+55.2%
0.04%
+26.5%
Q1 2016$2,423,000
+250.1%
159,700
+234.1%
0.03%
+325.0%
Q4 2015$692,000
+69.2%
47,800
+70.7%
0.01%
+33.3%
Q3 2015$409,000
-56.4%
28,000
-46.3%
0.01%
-53.8%
Q2 2015$937,000
-45.1%
52,100
-30.2%
0.01%
-51.9%
Q1 2015$1,706,000
-42.9%
74,600
-44.7%
0.03%
-40.0%
Q4 2014$2,988,000
+117.2%
135,000
+112.9%
0.04%
+114.3%
Q3 2014$1,376,000
+82.3%
63,400
+100.0%
0.02%
+75.0%
Q2 2014$755,000
-23.7%
31,700
-33.0%
0.01%
-29.4%
Q1 2014$989,000
+10.3%
47,300
+2.8%
0.02%
+21.4%
Q4 2013$897,000
+25.5%
46,000
+25.0%
0.01%0.0%
Q3 2013$715,000
+86.2%
36,800
+103.3%
0.01%
+55.6%
Q2 2013$384,00018,1000.01%
Other shareholders
CALPINE CORP shareholders Q4 2014
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 135,000$2,988,0000.04%
Virtu KCG Holdings LLC 37,600$832,0000.01%
Timber Hill LLC 108,900$2,410,0000.01%
Citadel Advisors 193,400$4,280,0000.00%
SIMPLEX TRADING, LLC 55$5,0000.00%
View complete list of CALPINE CORP shareholders