Label

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Alger MidCap Growth Fund

Risk/Return:

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Supplement [Text Block]

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THE ALGER FUNDS

Alger Mid Cap Growth Fund

Supplement Dated January 11, 2017 to the

Prospectus Dated March 1, 2016

As Revised October 14, 2016

As Supplemented to Date

Risk/Return [Heading]

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Alger MidCap Growth Fund

Strategy Narrative [Text Block]

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The following replaces the last sentence in the second paragraph under the heading “Principal Investment Strategy” on page 14 of the Prospectus:

“At December 31, 2016, the market capitalization of the companies in these indexes ranged from $394.9 million to $56.9 billion.”