CDW CORP

CUSIP: 12514G10 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2014
Shares 307,378 Value ($000) $10,810 Avg Close — Range —
Q3 2014
Shares 318,366 Value ($000) $9,885 Avg Close — Range —
Q2 2014
Shares 143,583 Value ($000) $4,577 Avg Close — Range —
Q1 2014
Shares 167,661 Value ($000) $4,601 Avg Close — Range —
Q4 2013
Shares 167,661 Value ($000) $3,917 Avg Close — Range —