GROUP ONE TRADING, L.P. - CUBIST PHARMACEUTICALS INC ownership

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CUBIST PHARMACEUTICALS INC's ticker is and the CUSIP is 229678957. A total of 3 filers reported holding CUBIST PHARMACEUTICALS INC in Q3 2013. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of CUBIST PHARMACEUTICALS INC
ValueSharesWeighting
Q4 2014$17,402,000
+567.5%
172,900
+339.9%
0.26%
+557.5%
Q3 2014$2,607,000
+47.6%
39,300
+55.3%
0.04%
+48.1%
Q2 2014$1,766,000
+1720.6%
25,300
+1165.0%
0.03%
+1250.0%
Q2 2013$97,000–2,000–0.00%–
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Other shareholders
CUBIST PHARMACEUTICALS INC shareholders Q3 2013
NameSharesValueWeighting ↓
SABBY MANAGEMENT, LLC 62$394,0000.03%
Timber Hill LLC 34,800$2,212,0000.01%
Citadel Advisors 23,600$1,500,0000.00%
View complete list of CUBIST PHARMACEUTICALS INC shareholders