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FIDELITY ABERDEEN STREET TRUST

Prospectus Date

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May 30, 2013

A T C | Fidelity Advisor Freedom 2055 Fund

Risk/Return:

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Supplement [Text Block]

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Supplement to the
Fidelity Advisor Freedom Funds^®Class A, Class T, Class B, and Class C
May 30, 2013
Prospectus

Strategic Advisers may modify the target asset allocation strategy for the Fidelity Advisor Freedom Funds and modify the selection of underlying Fidelity funds for any Fidelity Advisor Freedom Fund from time to time. Fidelity Advisor^® Series Growth Opportunities Fund, Fidelity Advisor Series Small Cap Fund, and Fidelity^® Series 1000 Value Index Fund have been added to the selection of underlying funds. Each Fidelity Advisor Freedom Fund is expected to cease its investments in Fidelity Advisor Growth & Income Fund, Fidelity Advisor Large Cap Fund, Fidelity Advisor Small Cap Fund, and Fidelity Series Large Cap Value Fund over time. Effective August 1, 2013, Fidelity Advisor Series Mega Cap Fund revised its investment objective to seek a high total return through a combination of current income and capital appreciation and eliminated its current policy to invest at least 80% of its assets in common stocks of companies with mega market capitalizations. In addition to other related policy changes, the fund also changed its name to "Fidelity Advisor Series Growth & Income Fund." Effective on or about January 1, 2014, a new target asset allocation strategy for the Fidelity Advisor Freedom Funds will take effect. On or about September 26, 2013, Strategic Advisers began transitioning fund assets to achieve the desired target allocations. The modified asset allocation strategy is expected to result in changes to acquired fund fees and expenses reflected in each fund's fee table, which have been updated accordingly in the fee tables below. Commensurate with this change, on or about January 1, 2014, after the modified asset allocation strategy has been fully implemented, Strategic Advisers will replace the MSCI EAFE Index with the MSCI ACWI ex US Index as a component of each fund's composite benchmark.

The following information replaces similar information for Fidelity Advisor Freedom Income Fund found in the "Fund Summary" section beginning on page 3 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.51%	0.51%	0.51%	0.51%
Total annual operating expenses^B	0.76%	1.01%	1.51%	1.51%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 648	$ 648	$ 449	$ 449	$ 654	$ 154	$ 254	$ 154
3 years	$ 804	$ 804	$ 660	$ 660	$ 777	$ 477	$ 477	$ 477
5 years	$ 973	$ 973	$ 888	$ 888	$ 1,024	$ 824	$ 824	$ 824
10 years	$ 1,463	$ 1,463	$ 1,543	$ 1,543	$ 1,504	$ 1,504	$ 1,802	$ 1,802

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to a stable target asset allocation of approximately:




Domestic Equity Funds	17%
International Equity Funds	7%
Bond Funds	46%
Short-Term Funds	30%

The following information replaces similar information for Fidelity Advisor Freedom 2005 Fund found in the "Fund Summary" section beginning on page 7 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.58%	0.58%	0.58%	0.58%
Total annual operating expenses^B	0.83%	1.08%	1.58%	1.58%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 655	$ 655	$ 456	$ 456	$ 661	$ 161	$ 261	$ 161
3 years	$ 825	$ 825	$ 681	$ 681	$ 799	$ 499	$ 499	$ 499
5 years	$ 1,009	$ 1,009	$ 925	$ 925	$ 1,060	$ 860	$ 860	$ 860
10 years	$ 1,541	$ 1,541	$ 1,621	$ 1,621	$ 1,582	$ 1,582	$ 1,878	$ 1,878

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2005).

The following information replaces similar information for Fidelity Advisor Freedom 2010 Fund found in the "Fund Summary" section beginning on page 11 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.62%	0.62%	0.62%	0.62%
Total annual operating expenses^B	0.87%	1.12%	1.62%	1.62%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 659	$ 659	$ 460	$ 460	$ 665	$ 165	$ 265	$ 165
3 years	$ 837	$ 837	$ 694	$ 694	$ 811	$ 511	$ 511	$ 511
5 years	$ 1,029	$ 1,029	$ 945	$ 945	$ 1,081	$ 881	$ 881	$ 881
10 years	$ 1,586	$ 1,586	$ 1,665	$ 1,665	$ 1,627	$ 1,627	$ 1,922	$ 1,922

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2010).

The following information replaces similar information for Fidelity Advisor Freedom 2015 Fund found in the "Fund Summary" section beginning on page 15 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.66%	0.66%	0.66%	0.66%
Total annual operating expenses^B	0.91%	1.16%	1.66%	1.66%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 663	$ 663	$ 464	$ 464	$ 669	$ 169	$ 269	$ 169
3 years	$ 848	$ 848	$ 706	$ 706	$ 823	$ 523	$ 523	$ 523
5 years	$ 1,050	$ 1,050	$ 966	$ 966	$ 1,102	$ 902	$ 902	$ 902
10 years	$ 1,630	$ 1,630	$ 1,710	$ 1,710	$ 1,672	$ 1,672	$ 1,965	$ 1,965

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2015).

The following information replaces similar information for Fidelity Advisor Freedom 2020 Fund found in the "Fund Summary" section beginning on page 19 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.69%	0.69%	0.69%	0.69%
Total annual operating expenses^B	0.94%	1.19%	1.69%	1.69%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 665	$ 665	$ 467	$ 467	$ 672	$ 172	$ 272	$ 172
3 years	$ 857	$ 857	$ 715	$ 715	$ 833	$ 533	$ 533	$ 533
5 years	$ 1,065	$ 1,065	$ 981	$ 981	$ 1,118	$ 918	$ 918	$ 918
10 years	$ 1,663	$ 1,663	$ 1,743	$ 1,743	$ 1,705	$ 1,705	$ 1,998	$ 1,998

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2020).

The following information replaces similar information for Fidelity Advisor Freedom 2025 Fund found in the "Fund Summary" section beginning on page 23 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.73%	0.73%	0.73%	0.73%
Total annual operating expenses^B	0.98%	1.23%	1.73%	1.73%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 669	$ 669	$ 471	$ 471	$ 676	$ 176	$ 276	$ 176
3 years	$ 869	$ 869	$ 727	$ 727	$ 845	$ 545	$ 545	$ 545
5 years	$ 1,086	$ 1,086	$ 1,002	$ 1,002	$ 1,139	$ 939	$ 939	$ 939
10 years	$ 1,707	$ 1,707	$ 1,787	$ 1,787	$ 1,749	$ 1,749	$ 2,041	$ 2,041

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2025).

The following information replaces similar information for Fidelity Advisor Freedom 2030 Fund found in the "Fund Summary" section beginning on page 27 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.78%	0.78%	0.78%	0.78%
Total annual operating expenses^B	1.03%	1.28%	1.78%	1.78%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 674	$ 674	$ 476	$ 476	$ 681	$ 181	$ 281	$ 181
3 years	$ 884	$ 884	$ 742	$ 742	$ 860	$ 560	$ 560	$ 560
5 years	$ 1,111	$ 1,111	$ 1,028	$ 1,028	$ 1,164	$ 964	$ 964	$ 964
10 years	$ 1,762	$ 1,762	$ 1,841	$ 1,841	$ 1,804	$ 1,804	$ 2,095	$ 2,095

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2030).

The following information replaces similar information for Fidelity Advisor Freedom 2035 Fund found in the "Fund Summary" section beginning on page 31 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.80%	0.80%	0.80%	0.80%
Total annual operating expenses^B	1.05%	1.30%	1.80%	1.80%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 676	$ 676	$ 478	$ 478	$ 683	$ 183	$ 283	$ 183
3 years	$ 890	$ 890	$ 748	$ 748	$ 866	$ 566	$ 566	$ 566
5 years	$ 1,121	$ 1,121	$ 1,038	$ 1,038	$ 1,175	$ 975	$ 975	$ 975
10 years	$ 1,784	$ 1,784	$ 1,863	$ 1,863	$ 1,826	$ 1,826	$ 2,116	$ 2,116

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2035).

The following information replaces similar information for Fidelity Advisor Freedom 2040 Fund found in the "Fund Summary" section beginning on page 35 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.80%	0.80%	0.80%	0.80%
Total annual operating expenses^B	1.05%	1.30%	1.80%	1.80%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 676	$ 676	$ 478	$ 478	$ 683	$ 183	$ 283	$ 183
3 years	$ 890	$ 890	$ 748	$ 748	$ 866	$ 566	$ 566	$ 566
5 years	$ 1,121	$ 1,121	$ 1,038	$ 1,038	$ 1,175	$ 975	$ 975	$ 975
10 years	$ 1,784	$ 1,784	$ 1,863	$ 1,863	$ 1,826	$ 1,826	$ 2,116	$ 2,116

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2040).

The following information replaces similar information for Fidelity Advisor Freedom 2045 Fund found in the "Fund Summary" section beginning on page 39 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.81%	0.81%	0.81%	0.81%
Total annual operating expenses^B	1.06%	1.31%	1.81%	1.81%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 677	$ 677	$ 479	$ 479	$ 684	$ 184	$ 284	$ 184
3 years	$ 893	$ 893	$ 751	$ 751	$ 869	$ 569	$ 569	$ 569
5 years	$ 1,126	$ 1,126	$ 1,043	$ 1,043	$ 1,180	$ 980	$ 980	$ 980
10 years	$ 1,795	$ 1,795	$ 1,874	$ 1,874	$ 1,837	$ 1,837	$ 2,127	$ 2,127

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2045).

The following information replaces similar information for Fidelity Advisor Freedom 2050 Fund found in the "Fund Summary" section beginning on page 43 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class B	Class C
Management fee	None	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%	1.00%
Other expenses	0.00%	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.81%	0.81%	0.81%	0.81%
Total annual operating expenses^B	1.06%	1.31%	1.81%	1.81%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class B		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 677	$ 677	$ 479	$ 479	$ 684	$ 184	$ 284	$ 184
3 years	$ 893	$ 893	$ 751	$ 751	$ 869	$ 569	$ 569	$ 569
5 years	$ 1,126	$ 1.126	$ 1,043	$ 1,043	$ 1,180	$ 980	$ 980	$ 980
10 years	$ 1,795	$ 1,795	$ 1,874	$ 1,874	$ 1,837	$ 1,837	$ 2,127	$ 2,127

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2050).

The following information replaces similar information for Fidelity Advisor Freedom 2055 Fund found in the "Fund Summary" section beginning on page 47 under each of the headings indicated below.

Fee Table

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

	Class A	Class T	Class C
Management fee	None	None	None
Distribution and/or Service (12b-1) fees	0.25%	0.50%	1.00%
Other expenses	0.00%	0.00%	0.00%
Acquired fund fees and expenses^A	0.81%	0.81%	0.81%
Total annual operating expenses^B	1.06%	1.31%	1.81%

^AAdjusted to reflect current fees.

^BDiffers from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses.

	Class A		Class T		Class C
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 677	$ 677	$ 479	$ 479	$ 284	$ 184
3 years	$ 893	$ 893	$ 751	$ 751	$ 569	$ 569
5 years	$ 1,126	$ 1,126	$ 1,043	$ 1,043	$ 980	$ 980
10 years	$ 1,795	$ 1,795	$ 1,874	$ 1,874	$ 2,127	$ 2,127

Principal Investment Strategies

Allocating assets among underlying Fidelity funds according to an asset allocation strategy that becomes increasingly conservative until it reaches approximately 17% in domestic equity funds, 7% in international equity funds, 46% in bond funds, and 30% in short-term funds (approximately 10 to 17 years after the year 2055).