SIMPLEX TRADING, LLC - CEPHEID ownership

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CEPHEID's ticker is and the CUSIP is 15670R907. A total of 3 filers reported holding CEPHEID in Q3 2015. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of CEPHEID
ValueSharesWeighting
Q3 2016$159,000
+3080.0%
378
+2807.7%
0.01%–
Q2 2016$5,0000.0%13
-64.9%
0.00%–
Q1 2016$5,000
-16.7%
37
-24.5%
0.00%–
Q4 2015$6,000
-33.3%
49
-38.0%
0.00%
-100.0%
Q3 2015$9,000
+80.0%
79
+338.9%
0.00%–
Q2 2015$5,000–18–0.00%–
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Other shareholders
CEPHEID shareholders Q3 2015
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 3,300$129,0000.00%
Citadel Advisors 5,800$226,0000.00%
View complete list of CEPHEID shareholders