SpiderRock Trading LLC - SIGMA ALDRICH CORP ownership

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SIGMA ALDRICH CORP's ticker is and the CUSIP is 82655210. A total of 3 filers reported holding SIGMA ALDRICH CORP in Q2 2014. The put-call ratio across all filers is - and the average weighting 0.0%.

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Filings
Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of SIGMA ALDRICH CORP
ValueSharesWeighting
Q3 2014$11,000
+83.3%
300
-72.7%
0.04%
+46.2%
Q2 2014$6,000
-94.2%
1,100
-42.1%
0.03%
-95.4%
Q4 2013$103,000–1,900
+850.0%
0.56%–
Q3 2013$0
-100.0%
200
-81.8%
0.00%
-100.0%
Q2 2013$25,000–1,100–0.20%–
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Other shareholders
SIGMA ALDRICH CORP shareholders Q2 2014
NameSharesValueWeighting ↓
INGALLS & SNYDER LLC 3,325$459,0000.02%
View complete list of SIGMA ALDRICH CORP shareholders