ARMSTRONG HENRY H ASSOCIATES INC - SIGMA ALDRICH CORP ownership

SIGMA ALDRICH CORP's ticker is SIAL and the CUSIP is 826552101. A total of 545 filers reported holding SIGMA ALDRICH CORP in Q1 2015. The put-call ratio across all filers is 2.28 and the average weighting 0.4%.

Quarter-by-quarter ownership
ARMSTRONG HENRY H ASSOCIATES INC ownership history of SIGMA ALDRICH CORP
ValueSharesWeighting
Q3 2015$499,000
-0.2%
3,5900.0%0.10%
-15.7%
Q2 2015$500,000
+0.8%
3,5900.0%0.12%
+11.0%
Q1 2015$496,000
+3.3%
3,590
+2.6%
0.11%
+4.8%
Q4 2014$480,000
+0.8%
3,5000.0%0.10%
-4.6%
Q3 2014$476,000
+34.1%
3,5000.0%0.11%
+28.2%
Q2 2014$355,000
+8.6%
3,5000.0%0.08%
+4.9%
Q1 2014$327,000
-0.6%
3,5000.0%0.08%
+19.1%
Q4 2013$329,0003,5000.07%
Other shareholders
SIGMA ALDRICH CORP shareholders Q1 2015
NameSharesValueWeighting ↓
Burren Capital Advisors Ltd 35,000$4,839,00017.52%
SHAYNE & JACOBS, LLC 114,052$15,768,00012.23%
Cheyne Capital Management (UK) LLP 199,237$27,547,0006.64%
REIK & CO., LLC 143,793$19,879,0006.44%
Chicago Capital Management, LLC 103,300$14,281,0006.00%
Kellner Capital, LLC 62,150$8,592,0005.63%
MCDANIEL TERRY & CO 164,215$22,703,0005.55%
GLAZER CAPITAL, LLC 261,530$36,157,0005.45%
ALPINE ASSOCIATES MANAGEMENT INC. 1,073,600$148,426,0005.33%
COWEN INC. 430,993$59,585,0004.93%
View complete list of SIGMA ALDRICH CORP shareholders