AMCOL INTL CORP

CUSIP: 02341W103 Class: COMMON STOCK

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q1 2014
Shares 1,637,592 Value ($000) $74,969 Avg Close — Range —
Q4 2013
Shares 1,621,674 Value ($000) $55,105 Avg Close — Range —
Q3 2013
Shares 1,514,033 Value ($000) $49,478 Avg Close — Range —
Q2 2013
Shares 1,479,647 Value ($000) $46,890 Avg Close — Range —