SpiderRock Trading LLC - STAMPS COM INC ownership

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STAMPS COM INC's ticker is and the CUSIP is 85285720. A total of 1 filers reported holding STAMPS COM INC in Q2 2014. The put-call ratio across all filers is - and the average weighting 0.1%.

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Filings
Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of STAMPS COM INC
ValueSharesWeighting
Q2 2014$14,000
+1300.0%
3,000
+233.3%
0.06%
+1120.0%
Q4 2013$1,000
-85.7%
900
+400.0%
0.01%
-90.7%
Q2 2013$7,000–180–0.05%–
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Other shareholders
STAMPS COM INC shareholders Q2 2014
NameSharesValueWeighting ↓
SpiderRock Trading LLC 3,000$14,0000.06%
View complete list of STAMPS COM INC shareholders