Notes to Financial Statements
1. Nature of Operations
Columbia Acorn Fund, Columbia Acorn International, Columbia Acorn USA, Columbia Acorn International Select, Columbia Acorn Select and Columbia Thermostat
Fund (the "Funds") are each a series of Columbia Acorn Trust (the "Trust"), an open-end management investment company organized as a Massachusetts business trust.
The investment objective of each Fund, excluding Columbia Thermostat Fund, is to seek long-term growth of capital. The investment objective of Columbia
Thermostat Fund is to provide long-term total return. Columbia Thermostat Fund pursues its investment objective by investing in shares of other mutual funds. As a
"fund of funds," under normal circumstances, the Fund allocates at least 95% of its net assets among a selected group of stock and bond mutual funds ("portfolio funds")
according to the current level of the Standard & Poor's 500 Stock Index in relation to predetermined ranges set by the Fund's investment adviser. The Fund may invest
up to 5% of its net assets plus any cash received that day in cash, repurchase agreements, high quality short-term paper and government securities.
The Funds may issue an unlimited number of shares. The Funds currently offer four classes of shares: Class A, Class B, Class C and Class Z. Effective February 29,
2008, the Funds will no longer offer Class B shares.
Class A shares are sold with a front-end sales charge. Class A shares bought without an initial sales charge in accounts aggregating $1 million up to $50 million at the
time of purchase are subject to a 1.00% contingent deferred sales charge ("CDSC") if the shares are sold within 12 months of the date of purchase.
Class B shares are subject to a CDSC if sold within six years of purchase. Class B shares will convert to Class A shares automatically eight years after purchase.
Class C shares are subject to a CDSC on redemptions made within one year after purchase.
Class Z shares are offered continuously at net asset value. There are ce