SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

CORRADO ADVISORS, LLC's Holding History (CIK: 0001482611)

Note: Option positions (PUT/CALL) are excluded.

Q2 2013
Shares 3,820 Value ($000) $307 Avg Close — Range —
Q1 2013
Shares 3,820 Value ($000) $297 Avg Close — Range —
Q4 2012
Shares 3,820 Value ($000) $281 Avg Close — Range —
Q3 2012
Shares 3,820 Value ($000) $275 Avg Close — Range —
Q2 2012
Shares 3,820 Value ($000) $282 Avg Close — Range —
Q1 2012
Shares 3,820 Value ($000) $279 Avg Close — Range —
Q4 2011
Shares 3,820 Value ($000) $239 Avg Close — Range —
Q3 2011
Shares 3,820 Value ($000) $236 Avg Close — Range —
Q1 2011
Shares 3,820 Value ($000) $243 Avg Close — Range —
Q4 2010
Shares 3,820 Value ($000) $254 Avg Close — Range —
Q3 2010
Shares 3,820 Value ($000) $231 Avg Close — Range —
Q1 2010
Shares 4,000 Value ($000) $215 Avg Close — Range —