GROUP ONE TRADING, L.P. - STAMPS COM INC ownership

STAMPS COM INC's ticker is STMP and the CUSIP is 852857200. A total of 146 filers reported holding STAMPS COM INC in Q3 2013. The put-call ratio across all filers is 0.74 and the average weighting 0.1%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of STAMPS COM INC
ValueSharesWeighting
Q3 2021$3,567,000
+745.3%
10,815
+370.2%
0.00%
+100.0%
Q2 2020$422,000
-12.6%
2,300
-10.4%
0.00%
-33.3%
Q4 2017$483,000
+2583.3%
2,567
+2752.2%
0.00%
Q3 2017$18,000
-95.5%
90
-97.3%
0.00%
-100.0%
Q1 2017$399,000
-52.0%
3,373
-53.5%
0.01%
-37.5%
Q4 2016$831,000
+1140.3%
7,251
+1041.9%
0.01%
+700.0%
Q1 2016$67,000
+1575.0%
635
+424.8%
0.00%
Q3 2014$4,000
-84.0%
121
-83.8%
0.00%
Q2 2014$25,000
-34.2%
747
-9.6%
0.00%
-100.0%
Q3 2013$38,000
-81.8%
826
-84.4%
0.00%
-80.0%
Q2 2013$209,0005,3070.01%
Other shareholders
STAMPS COM INC shareholders Q3 2013
NameSharesValueWeighting ↓
Lyon Street Capital, LLC 164,084$18,812,0009.62%
P2 Capital Partners, LLC 591,175$67,778,0008.90%
Calixto Global Investors, LP 176,456$20,231,0006.91%
Prospect Capital Advisors, LLC 67,900$7,785,0005.50%
WEATHERBIE CAPITAL, LLC 369,298$42,340,0005.31%
Harvest Capital Strategies LLC 330,000$37,835,0005.15%
PRECEPT MANAGEMENT LLC 55,000$6,306,0004.68%
G2 Investment Partners Management LLC 74,207$8,508,0004.20%
Jericho Capital Asset Management L.P. 592,000$67,873,0004.16%
Portolan Capital Management 249,436$28,598,0003.85%
View complete list of STAMPS COM INC shareholders