-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, LnjNdbggikJKGOCzrhwao4j2EZbD2uCmiA7R5Y/074nq68ofub1lRBlbw1WdihdU zA6HdjRpWGiabtXTamV1AQ== 0000950135-06-001114.txt : 20060222 0000950135-06-001114.hdr.sgml : 20060222 20060222142657 ACCESSION NUMBER: 0000950135-06-001114 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20060222 DATE AS OF CHANGE: 20060222 EFFECTIVENESS DATE: 20060222 FILER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA ACORN TRUST CENTRAL INDEX KEY: 0000002110 IRS NUMBER: 362692100 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-34223 FILM NUMBER: 06635793 BUSINESS ADDRESS: STREET 1: 227 W MONROE STE 3000 CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3126349200 MAIL ADDRESS: STREET 1: 227 W MONROE STE 3000 CITY: CHICAGO STATE: IL ZIP: 60606 FORMER COMPANY: FORMER CONFORMED NAME: LIBERTY ACORN TRUST DATE OF NAME CHANGE: 20010424 FORMER COMPANY: FORMER CONFORMED NAME: ACORN INVESTMENT TRUST DATE OF NAME CHANGE: 19940204 FORMER COMPANY: FORMER CONFORMED NAME: ACORN FUND INC DATE OF NAME CHANGE: 19920703 0000002110 S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A LACAX C000024955 Columbia Acorn Fund Class B LACBX C000024956 Columbia Acorn Fund Class C LIACX C000024957 Columbia Acorn Fund Class Z ACRNX 0000002110 S000009185 Columbia Acorn International C000024958 Columbia Acorn International Class A LAIAX C000024959 Columbia Acorn International Class B LIABX C000024960 Columbia Acorn International Class C LAICX C000024961 Columbia Acorn International Class Z ACINX 0000002110 S000009186 Columbia Acorn USA C000024962 Columbia Acorn USA Class A LAUAX C000024963 Columbia Acorn USA Class B LAUBX C000024964 Columbia Acorn USA Class C LAUCX C000024965 Columbia Acorn USA Class Z AUSAX 0000002110 S000009187 Columbia Acorn Select C000024966 Columbia Acorn Select Class A LTFAX C000024967 Columbia Acorn Select Class B LTFBX C000024968 Columbia Acorn Select Class C LTFCX C000024969 Columbia Acorn Select Class Z ACTWX 0000002110 S000009188 Columbia Acorn International Select C000024970 Columbia Acorn International Select Class A LAFAX C000024971 Columbia Acorn International Select Class B LFFBX C000024972 Columbia Acorn International Select Class C LFFCX C000024973 Columbia Acorn International Select Class Z ACFFX 0000002110 S000009189 Columbia Thermostat Fund C000024974 Columbia Thermostat Fund Class A CTFAX C000024975 Columbia Thermostat Fund Class B CTFBX C000024976 Columbia Thermostat Fund Class C CTFDX C000024977 Columbia Thermostat Fund Class Z COTZX 497 1 b59072a1e497.txt COLUMBIA ACORN TRUST COLUMBIA ACORN FUND COLUMBIA ACORN USA COLUMBIA ACORN SELECT COLUMBIA ACORN INTERNATIONAL COLUMBIA ACORN INTERNATIONAL SELECT COLUMBIA THERMOSTAT FUND (EACH A "FUND" AND COLLECTIVELY, THE "FUNDS") SUPPLEMENT TO THE PROSPECTUSES DATED MAY 1, 2005 (THE "PROSPECTUSES") (REPLACING SUPPLEMENT DATED JUNE 30, 2005) The Prospectuses are hereby supplemented with the following revised information relating to hypothetical investment and expense information: HYPOTHETICAL INVESTMENT AND EXPENSE INFORMATION The following supplemental hypothetical investment information provides additional information about the effect of the expenses of the Fund, including investment advisory fees and other Fund costs, on the Fund's returns over a 10-year period. The charts show the estimated expenses that would be charged on a hypothetical investment of $10,000 in each class of the Fund assuming a 5% return each year, the cumulative return after fees and expenses, and the hypothetical year-end balance after fees and expenses. The charts also assume that all dividends and distributions are reinvested and that Class B shares convert to Class A shares after eight years. The annual expense ratios used for the Fund, which are the same as those stated in the Annual Fund Operating Expenses tables, are presented in the charts, and are net of any contractual fee waivers or expense reimbursements for the period of the contractual commitment. Your actual costs may be higher or lower. The tables shown below reflect the maximum initial sales charge but do not reflect any contingent deferred sales charges which may be payable on redemption. If contingent deferred sales charges were reflected, the "Hypothetical Year-End Balance After Fees and Expenses" amounts shown would be lower and the "Annual Fees and Expenses" amounts shown would be higher. COLUMBIA ACORN FUND -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.10% -2.07%(2) $9,792.58 $680.70 2 10.25% 1.12% 1.73% $10,172.53 $111.80 3 15.76% 1.12% 5.67% $10,567.22 $116.14 4 21.55% 1.12% 9.77% $10,977.23 $120.65 5 27.63% 1.12% 14.03% $11,403.15 $125.33 6 34.01% 1.12% 18.46% $11,845.59 $130.19 7 40.71% 1.12% 23.05% $12,305.20 $135.24 8 47.75% 1.12% 27.83% $12,782.64 $140.49 9 55.13% 1.12% 32.79% $13,278.60 $145.94 10 62.89% 1.12% 37.94% $13,793.81 $151.61 TOTAL GAIN AFTER FEES AND EXPENSES $3,793.81 TOTAL ANNUAL FEES AND EXPENSES $1,858.10
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA ACORN FUND -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.79% 3.21% $10,321.00 $181.87 2 10.25% 1.81% 6.50% $10,650.24 $189.79 3 15.76% 1.81% 9.90% $10,989.98 $195.84 4 21.55% 1.81% 13.41% $11,340.56 $202.09 5 27.63% 1.81% 17.02% $11,702.33 $208.54 6 34.01% 1.81% 20.76% $12,075.63 $215.19 7 40.71% 1.81% 24.61% $12,460.84 $222.06 8 47.75% 1.81% 28.58% $12,858.34 $229.14 9 55.13% 1.12% 33.57% $13,357.25 $146.81 10 62.89% 1.12% 38.76% $13,875.51 $152.50 TOTAL GAIN AFTER FEES AND EXPENSES $3,875.51 TOTAL ANNUAL FEES AND EXPENSES $1,943.83
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN FUND -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.90% 3.10% $10,310.00 $192.95 2 10.25% 1.92% 6.28% $10,627.55 $201.00 3 15.76% 1.92% 9.55% $10,954.88 $207.19 4 21.55% 1.92% 12.92% $11,292.29 $213.57 5 27.63% 1.92% 16.40% $11,640.09 $220.15 6 34.01% 1.92% 19.99% $11,998.60 $226.93 7 40.71% 1.92% 23.68% $12,368.16 $233.92 8 47.75% 1.92% 27.49% $12,749.10 $241.13 9 55.13% 1.92% 31.42% $13,141.77 $248.55 10 62.89% 1.92% 35.47% $13,546.54 $256.21 TOTAL GAIN AFTER FEES AND EXPENSES $3,546.54 TOTAL ANNUAL FEES AND EXPENSES $2,241.60
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN FUND -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 0.79% 4.21% $10,421.00 $80.66 2 10.25% 0.81% 8.58% $10,857.64 $86.18 3 15.76% 0.81% 13.13% $11,312.58 $89.79 4 21.55% 0.81% 17.87% $11,786.57 $93.55 5 27.63% 0.81% 22.80% $12,280.43 $97.47 6 34.01% 0.81% 27.95% $12,794.98 $101.56 7 40.71% 0.81% 33.31% $13,331.09 $105.81 8 47.75% 0.81% 38.90% $13,889.66 $110.24 9 55.13% 0.81% 44.72% $14,471.64 $114.86 10 62.89% 0.81% 50.78% $15,078.00 $119.68 TOTAL GAIN AFTER FEES AND EXPENSES $5,078.00 TOTAL ANNUAL FEES AND EXPENSES $999.80
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN USA -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.41% -2.37%(2) $9,763.36 $710.28 2 10.25% 1.43% 1.12% $10,111.91 $142.11 3 15.76% 1.43% 4.73% $10,472.90 $147.18 4 21.55% 1.43% 8.47% $10,846.79 $152.44 5 27.63% 1.43% 12.34% $11,234.02 $157.88 6 34.01% 1.43% 16.35% $11,635.07 $163.51 7 40.71% 1.43% 20.50% $12,050.44 $169.35 8 47.75% 1.43% 24.81% $12,480.64 $175.40 9 55.13% 1.43% 29.26% $12,926.20 $181.66 10 62.89% 1.43% 33.88% $13,387.67 $188.14 TOTAL GAIN AFTER FEES AND EXPENSES $3,387.67 TOTAL ANNUAL FEES AND EXPENSES $2,187.95
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA ACORN USA -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.09% 2.91% $10,291.00 $212.04 2 10.25% 2.11% 5.88% $10,588.41 $220.28 3 15.76% 2.11% 8.94% $10,894.41 $226.64 4 21.55% 2.11% 12.09% $11,209.26 $233.19 5 27.63% 2.11% 15.33% $11,533.21 $239.93 6 34.01% 2.11% 18.67% $11,866.52 $246.87 7 40.71% 2.11% 22.09% $12,209.46 $254.00 8 47.75% 2.11% 25.62% $12,562.32 $261.34 9 55.13% 1.43% 30.11% $13,010.79 $182.85 10 62.89% 1.43% 34.75% $13,475.28 $189.38 TOTAL GAIN AFTER FEES AND EXPENSES $3,475.28 TOTAL ANNUAL FEES AND EXPENSES $2,266.52
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN USA -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.19% 2.81% $10,281.00 $222.08 2 10.25% 2.21% 5.68% $10,567.84 $230.38 3 15.76% 2.21% 8.63% $10,862.68 $236.81 4 21.55% 2.21% 11.66% $11,165.75 $243.41 5 27.63% 2.21% 14.77% $11,477.28 $250.21 6 34.01% 2.21% 17.97% $11,797.49 $257.19 7 40.71% 2.21% 21.27% $12,126.64 $264.36 8 47.75% 2.21% 24.65% $12,464.98 $271.74 9 55.13% 2.21% 28.13% $12,812.75 $279.32 10 62.89% 2.21% 31.70% $13,170.22 $287.11 TOTAL GAIN AFTER FEES AND EXPENSES $3,170.22 TOTAL ANNUAL FEES AND EXPENSES $2,542.60
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN USA -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.08% 3.92% $10,392.00 $110.12 2 10.25% 1.10% 7.97% $10,797.29 $116.54 3 15.76% 1.10% 12.18% $11,218.38 $121.09 4 21.55% 1.10% 16.56% $11,655.90 $125.81 5 27.63% 1.10% 21.10% $12,110.48 $130.72 6 34.01% 1.10% 25.83% $12,582.79 $135.81 7 40.71% 1.10% 30.74% $13,073.52 $141.11 8 47.75% 1.10% 35.83% $13,583.38 $146.61 9 55.13% 1.10% 41.13% $14,113.14 $152.33 10 62.89% 1.10% 46.64% $14,663.55 $158.27 TOTAL GAIN AFTER FEES AND EXPENSES $4,663.55 TOTAL ANNUAL FEES AND EXPENSES $1,338.41
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN SELECT -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.33% -2.29%(2) $9,770.90 $702.65 2 10.25% 1.35% 1.28% $10,127.54 $134.31 3 15.76% 1.35% 4.97% $10,497.19 $139.22 4 21.55% 1.35% 8.80% $10,880.34 $144.30 5 27.63% 1.35% 12.77% $11,277.47 $149.57 6 34.01% 1.35% 16.89% $11,689.10 $155.02 7 40.71% 1.35% 21.16% $12,115.75 $160.68 8 47.75% 1.35% 25.58% $12,557.97 $166.55 9 55.13% 1.35% 30.16% $13,016.34 $172.63 10 62.89% 1.35% 34.91% $13,491.44 $178.93 TOTAL GAIN AFTER FEES AND EXPENSES $3,491.44 TOTAL ANNUAL FEES AND EXPENSES $2,103.86
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA ACORN SELECT -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.07% 2.93% $10,293.00 $210.03 2 10.25% 2.09% 5.93% $10,592.53 $218.25 3 15.76% 2.09% 9.01% $10,900.77 $224.60 4 21.55% 2.09% 12.18% $11,217.98 $231.14 5 27.63% 2.09% 15.44% $11,544.42 $237.87 6 34.01% 2.09% 18.80% $11,880.37 $244.79 7 40.71% 2.09% 22.26% $12,226.09 $251.91 8 47.75% 2.09% 25.82% $12,581.86 $259.24 9 55.13% 1.35% 30.41% $13,041.10 $172.96 10 62.89% 1.35% 35.17% $13,517.10 $179.27 TOTAL GAIN AFTER FEES AND EXPENSES $3,517.10 TOTAL ANNUAL FEES AND EXPENSES $2,230.07
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN SELECT -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.16% 2.84% $10,284.00 $219.07 2 10.25% 2.18% 5.74% $10,574.01 $227.35 3 15.76% 2.18% 8.72% $10,872.20 $233.76 4 21.55% 2.18% 11.79% $11,178.79 $240.36 5 27.63% 2.18% 14.94% $11,494.03 $247.13 6 34.01% 2.18% 18.18% $11,818.17 $254.10 7 40.71% 2.18% 21.51% $12,151.44 $261.27 8 47.75% 2.18% 24.94% $12,494.11 $268.64 9 55.13% 2.18% 28.46% $12,846.44 $276.21 10 62.89% 2.18% 32.09% $13,208.71 $284.00 TOTAL GAIN AFTER FEES AND EXPENSES $3,208.71 TOTAL ANNUAL FEES AND EXPENSES $2,511.89
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN SELECT -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.07% 3.93% $10,393.00 $109.10 2 10.25% 1.09% 7.99% $10,799.37 $115.50 3 15.76% 1.09% 12.22% $11,221.62 $120.01 4 21.55% 1.09% 16.60% $11,660.39 $124.71 5 27.63% 1.09% 21.16% $12,116.31 $129.58 6 34.01% 1.09% 25.90% $12,590.06 $134.65 7 40.71% 1.09% 30.82% $13,082.33 $139.91 8 47.75% 1.09% 35.94% $13,593.85 $145.39 9 55.13% 1.09% 41.25% $14,125.37 $151.07 10 62.89% 1.09% 46.78% $14,677.67 $156.98 TOTAL GAIN AFTER FEES AND EXPENSES $4,677.67 TOTAL ANNUAL FEES AND EXPENSES $1,326.90
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.38% -2.34%(2) $9,766.19 $707.42 2 10.25% 1.40% 1.18% $10,117.77 $139.19 3 15.76% 1.40% 4.82% $10,482.01 $144.20 4 21.55% 1.40% 8.59% $10,859.36 $149.39 5 27.63% 1.40% 12.50% $11,250.30 $154.77 6 34.01% 1.40% 16.55% $11,655.31 $160.34 7 40.71% 1.40% 20.75% $12,074.90 $166.11 8 47.75% 1.40% 25.10% $12,509.59 $172.09 9 55.13% 1.40% 29.60% $12,959.94 $178.29 10 62.89% 1.40% 34.26% $13,426.50 $184.71 TOTAL GAIN AFTER FEES AND EXPENSES $3,426.50 TOTAL ANNUAL FEES AND EXPENSES $2,156.50
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA ACORN INTERNATIONAL -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.12% 2.88% $10,288.00 $215.05 2 10.25% 2.14% 5.82% $10,582.24 $223.31 3 15.76% 2.14% 8.85% $10,884.89 $229.70 4 21.55% 2.14% 11.96% $11,196.20 $236.27 5 27.63% 2.14% 15.16% $11,516.41 $243.02 6 34.01% 2.14% 18.46% $11,845.78 $249.98 7 40.71% 2.14% 21.85% $12,184.57 $257.12 8 47.75% 2.14% 25.33% $12,533.04 $264.48 9 55.13% 1.40% 29.84% $12,984.23 $178.62 10 62.89% 1.40% 34.52% $13,451.67 $185.05 TOTAL GAIN AFTER FEES AND EXPENSES $3,451.67 TOTAL ANNUAL FEES AND EXPENSES $2,282.61
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.18% 2.82% $10,282.00 $221.07 2 10.25% 2.20% 5.70% $10,569.90 $229.37 3 15.76% 2.20% 8.66% $10,865.85 $235.79 4 21.55% 2.20% 11.70% $11,170.10 $242.40 5 27.63% 2.20% 14.83% $11,482.86 $249.18 6 34.01% 2.20% 18.04% $11,804.38 $256.16 7 40.71% 2.20% 21.35% $12,134.90 $263.33 8 47.75% 2.20% 24.75% $12,474.68 $270.71 9 55.13% 2.20% 28.24% $12,823.97 $278.29 10 62.89% 2.20% 31.83% $13,183.04 $286.08 TOTAL GAIN AFTER FEES AND EXPENSES $3,183.04 TOTAL ANNUAL FEES AND EXPENSES $2,532.38
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.06% 3.94% $10,394.00 $108.09 2 10.25% 1.08% 8.01% $10,801.44 $114.46 3 15.76% 1.08% 12.25% $11,224.86 $118.94 4 21.55% 1.08% 16.65% $11,664.88 $123.60 5 27.63% 1.08% 21.22% $12,122.14 $128.45 6 34.01% 1.08% 25.97% $12,597.33 $133.49 7 40.71% 1.08% 30.91% $13,091.14 $138.72 8 47.75% 1.08% 36.04% $13,604.31 $144.16 9 55.13% 1.08% 41.38% $14,137.60 $149.81 10 62.89% 1.08% 46.92% $14,691.80 $155.68 TOTAL GAIN AFTER FEES AND EXPENSES $4,691.80 TOTAL ANNUAL FEES AND EXPENSES $1,315.38
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL SELECT -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.98% -2.90%(2) $9,709.64 $764.43 2 10.25% 2.01% 0.00% $9,999.95 $198.08 3 15.76% 2.01% 2.99% $10,298.95 $204.00 4 21.55% 2.01% 6.07% $10,606.89 $210.10 5 27.63% 2.01% 9.24% $10,924.04 $216.39 6 34.01% 2.01% 12.51% $11,250.67 $222.86 7 40.71% 2.01% 15.87% $11,587.06 $229.52 8 47.75% 2.01% 19.34% $11,933.51 $236.38 9 55.13% 2.01% 22.90% $12,290.33 $243.45 10 62.89% 2.01% 26.58% $12,657.81 $250.73 TOTAL GAIN AFTER FEES AND EXPENSES $2,657.81 TOTAL ANNUAL FEES AND EXPENSES $2,775.94
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA ACORN INTERNATIONAL SELECT -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.77% 2.23% $10,223.00 $280.09 2 10.25% 2.80% 4.48% $10,447.91 $289.39 3 15.76% 2.80% 6.78% $10,677.76 $295.76 4 21.55% 2.80% 9.13% $10,912.67 $302.27 5 27.63% 2.80% 11.53% $11,152.75 $308.92 6 34.01% 2.80% 13.98% $11,398.11 $315.71 7 40.71% 2.80% 16.49% $11,648.87 $322.66 8 47.75% 2.80% 19.05% $11,905.14 $329.76 9 55.13% 2.01% 22.61% $12,261.11 $242.87 10 62.89% 2.01% 26.28% $12,627.71 $250.13 TOTAL GAIN AFTER FEES AND EXPENSES $2,627.71 TOTAL ANNUAL FEES AND EXPENSES $2,937.55
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL SELECT -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 2.72% 2.28% $10,228.00 $275.10 2 10.25% 2.75% 4.58% $10,458.13 $284.43 3 15.76% 2.75% 6.93% $10,693.44 $290.83 4 21.55% 2.75% 9.34% $10,934.04 $297.38 5 27.63% 2.75% 11.80% $11,180.06 $304.07 6 34.01% 2.75% 14.32% $11,431.61 $310.91 7 40.71% 2.75% 16.89% $11,688.82 $317.91 8 47.75% 2.75% 19.52% $11,951.82 $325.06 9 55.13% 2.75% 22.21% $12,220.73 $332.37 10 62.89% 2.75% 24.96% $12,495.70 $339.85 TOTAL GAIN AFTER FEES AND EXPENSES $2,495.70 TOTAL ANNUAL FEES AND EXPENSES $3,077.91
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA ACORN INTERNATIONAL SELECT -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.67% 3.33% $10,333.00 $169.78 2 10.25% 1.70% 6.74% $10,673.99 $178.56 3 15.76% 1.70% 10.26% $11,026.23 $184.45 4 21.55% 1.70% 13.90% $11,390.10 $190.54 5 27.63% 1.70% 17.66% $11,765.97 $196.83 6 34.01% 1.70% 21.54% $12,154.25 $203.32 7 40.71% 1.70% 25.55% $12,555.34 $210.03 8 47.75% 1.70% 29.70% $12,969.66 $216.96 9 55.13% 1.70% 33.98% $13,397.66 $224.12 10 62.89% 1.70% 38.40% $13,839.78 $231.52 TOTAL GAIN AFTER FEES AND EXPENSES $3,839.78 TOTAL ANNUAL FEES AND EXPENSES $2,006.11
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA THERMOSTAT FUND -- CLASS A SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 5.75% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 0.50% -1.51%(2) $9,849.13 $623.19 2 10.25% 0.70% 2.73% $10,272.64 $70.43 3 15.76% 0.70% 7.14% $10,714.36 $73.45 4 21.55% 0.70% 11.75% $11,175.08 $76.61 5 27.63% 0.70% 16.56% $11,655.61 $79.91 6 34.01% 0.70% 21.57% $12,156.80 $83.34 7 40.71% 0.70% 26.80% $12,679.54 $86.93 8 47.75% 0.70% 32.25% $13,224.76 $90.67 9 55.13% 0.70% 37.93% $13,793.42 $94.56 10 62.89% 0.70% 43.87% $14,386.54 $98.63 TOTAL GAIN AFTER FEES AND EXPENSES $4,386.54 TOTAL ANNUAL FEES AND EXPENSES $1,377.72
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. (2) Reflects deduction of the maximum initial sales charge. COLUMBIA THERMOSTAT FUND -- CLASS B SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.10% 3.90% $10,390.00 $112.15 2 10.25% 1.35% 7.69% $10,769.24 $142.82 3 15.76% 1.35% 11.62% $11,162.31 $148.04 4 21.55% 1.35% 15.70% $11,569.74 $153.44 5 27.63% 1.35% 19.92% $11,992.03 $159.04 6 34.01% 1.35% 24.30% $12,429.74 $164.85 7 40.71% 1.35% 28.83% $12,883.43 $170.86 8 47.75% 1.35% 33.54% $13,353.67 $177.10 9 55.13% 0.70% 39.28% $13,927.88 $95.49 10 62.89% 0.70% 45.27% $14,526.78 $99.59 TOTAL GAIN AFTER FEES AND EXPENSES 4,$526.78 TOTAL ANNUAL FEES AND EXPENSES $1,423.38
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA THERMOSTAT FUND -- CLASS C SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 1.25% 3.75% $10,375.00 $127.34 2 10.25% 1.48% 7.40% $10,740.20 $156.25 3 15.76% 1.48% 11.18% $11,118.26 $161.75 4 21.55% 1.48% 15.10% $11,509.62 $167.45 5 27.63% 1.48% 19.15% $11,914.76 $173.34 6 34.01% 1.48% 23.34% $12,334.16 $179.44 7 40.71% 1.48% 27.68% $12,768.32 $185.76 8 47.75% 1.48% 32.18% $13,217.76 $192.30 9 55.13% 1.48% 36.83% $13,683.03 $199.07 10 62.89% 1.48% 41.65% $14,164.67 $206.07 TOTAL GAIN AFTER FEES AND EXPENSES $4,164.67 TOTAL ANNUAL FEES AND EXPENSES $1,748.77
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. COLUMBIA THERMOSTAT FUND -- CLASS Z SHARES
ASSUMED RATE OF RETURN MAXIMUM SALES CHARGE INITIAL HYPOTHETICAL INVESTMENT AMOUNT 5% 0.00% $10,000.00 HYPOTHETICAL CUMULATIVE CUMULATIVE YEAR-END ANNUAL RETURN BEFORE ANNUAL EXPENSE RETURN AFTER BALANCE AFTER FEES & YEAR FEES & EXPENSES RATIO FEES & EXPENSES FEES & EXPENSES EXPENSES(1) ---- --------------- -------------- --------------- --------------- ----------- 1 5.00% 0.25% 4.75% $10,475.00 $25.59 2 10.25% 0.43% 9.54% $10,953.71 $46.07 3 15.76% 0.43% 14.54% $11,454.29 $48.18 4 21.55% 0.43% 19.78% $11,977.75 $50.38 5 27.63% 0.43% 25.25% $12,525.14 $52.68 6 34.01% 0.43% 30.98% $13,097.54 $55.09 7 40.71% 0.43% 36.96% $13,696.09 $57.61 8 47.75% 0.43% 43.22% $14,322.00 $60.24 9 55.13% 0.43% 49.77% $14,976.52 $62.99 10 62.89% 0.43% 56.61% $15,660.95 $65.87 TOTAL GAIN AFTER FEES AND EXPENSES $5,660.95 TOTAL ANNUAL FEES AND EXPENSES $524.70
- --------------- (1) Annual Fees and Expenses are calculated based on the average between the beginning and ending balance for each year. All information is calculated on an annual compounding basis. INT-47/106630-0206 February 22, 2006 -----END PRIVACY-ENHANCED MESSAGE-----