Reddit forecast Q3 revenue of $860 million to $870 million, above the estimate of $829.1 million compiled by LSEG.
It sees quarterly adjusted earnings before interest, taxes, depreciation and amortization of $385 million to $395 million, above estimates of $369 million.
As of the last close, the stock was down 22% year to date.
Shares fall after slower growth in revenue and U.S. users
Shares of social media platform Reddit RDDT.N were down 7% at $165 in aftermarket trading.
The company reported slowing growth in both second-quarter revenue and its U.S. daily active unique visitors (DAUq).
Growth in its U.S. DAUq slowed in the second quarter sequentially, even as global DAUq rose 18% from a year earlier to 130.3 million.