WALGREEN CO

CUSIP: 931422109 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q2 2014
Shares 25,730 Value ($000) $1,907 Avg Close — Range —
Q1 2014
Shares 32,095 Value ($000) $2,119 Avg Close — Range —