Calamos Advisors LLC - SIGMA ALDRICH CORP ownership

SIGMA ALDRICH CORP's ticker is SIAL and the CUSIP is 826552101. A total of 522 filers reported holding SIGMA ALDRICH CORP in Q1 2014. The put-call ratio across all filers is 0.23 and the average weighting 0.3%.

Quarter-by-quarter ownership
Calamos Advisors LLC ownership history of SIGMA ALDRICH CORP
ValueSharesWeighting
Q2 2014$1,522,000
+8.6%
15,0000.0%0.01%
+11.1%
Q1 2014$1,401,000
-0.6%
15,0000.0%0.01%0.0%
Q4 2013$1,410,000
+10.2%
15,0000.0%0.01%
+12.5%
Q3 2013$1,280,00015,0000.01%
Other shareholders
SIGMA ALDRICH CORP shareholders Q1 2014
NameSharesValueWeighting ↓
SHAYNE & JACOBS, LLC 101,877$14,197,00011.86%
Chicago Capital Management, LLC 110,000$15,328,0007.00%
REIK & CO., LLC 139,443$19,431,0006.28%
GABELLI & Co INVESTMENT ADVISERS, INC. 245,601$34,224,0004.91%
Kellner Capital, LLC 66,800$9,309,0004.91%
America First Investment Advisors, LLC 77,405$10,786,0004.73%
GARDNER LEWIS ASSET MANAGEMENT L P 210,152$29,285,0004.43%
ALPINE ASSOCIATES MANAGEMENT INC. 968,217$134,921,0004.38%
LONGFELLOW INVESTMENT MANAGEMENT CO LLC 102,825$14,329,0004.29%
Black River Asset Management LLC 55,000$7,664,0004.09%
View complete list of SIGMA ALDRICH CORP shareholders