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Sep. 29, 2017
Retail \| Fidelity Flex Large Cap Growth Fund
Supplement to the Fidelity Flex℠ Funds Fidelity Flex℠ Large Cap Growth Fund September 29, 2017 Prospectus The following information replaces footnote b to the "Annual Operating Expenses" table found in the "Fund Summary" section. ^bThe fund is available only to certain fee-based accounts offered by Fidelity. Managed account clients, retirement plans, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services.

Sep. 29, 2017

Retail | Fidelity Flex Large Cap Growth Fund

Supplement to the
Fidelity Flex℠ Funds
Fidelity Flex℠ Large Cap Growth Fund
September 29, 2017
Prospectus

The following information replaces footnote b to the "Annual Operating Expenses" table found in the "Fund Summary" section.

^bThe fund is available only to certain fee-based accounts offered by Fidelity. Managed account clients, retirement plans, plan sponsors and/or plan participants pay a wrap fee that covers investment advisory and administrative services.