GROUP ONE TRADING, L.P. - ZOLTEK COS INC ownership

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ZOLTEK COS INC's ticker is and the CUSIP is 98975W954. A total of 1 filers reported holding ZOLTEK COS INC in Q4 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 ZOLTEK COS INC
ValueSharesWeighting
Q4 2013$601,000
-55.0%
35,900
-55.2%
0.01%
-65.4%
Q3 2013$1,337,000
+5977.3%
80,100
+4611.8%
0.03%
+2500.0%
Q2 2013$22,000–1,700–0.00%–
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Other shareholders
ZOLTEK COS INC shareholders Q4 2013
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 35,900$601,0000.01%
View complete list of ZOLTEK COS INC shareholders