SIGMA ALDRICH CORP

CUSIP: 826552101 Class: COM

PROFESSIONAL ADVISORY SERVICES INC's Holding History (CIK: 0000894205)

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

Q2 2014
Shares 81,364 Value ($000) $8,257 Avg Close — Range —
Q1 2014
Shares 126,046 Value ($000) $11,770 Avg Close — Range —
Q4 2013
Shares 126,427 Value ($000) $11,885 Avg Close — Range —
Q3 2013
Shares 127,613 Value ($000) $10,885 Avg Close — Range —
Q2 2013
Shares 87,352 Value ($000) $7,025 Avg Close — Range —