AMERICAN TOWER CORP

CUSIP: 029912201 Class: COM

BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp's Holding History (CIK: 0001228242)

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

Q4 2011
Shares 339,286 Value ($000) $20,361 Avg Close — Range —
Q3 2011
Shares 342,531 Value ($000) $18,428 Avg Close — Range —