Stock Market

Story: Reddit Jumps 11% on S&P 500 Entry as Google AI Traffic Risk Looms

By Sakamoto Nashi

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What S&P Membership Actually Means for Reddit. When a company lands in the S&P 500, passive funds tracking the index have to hold it.

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The Google Problem Isn't Going Away. S&P 500 membership won't fix the traffic issue. It'll bring in a new class of investors who…

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Reddit's stock shot up 11% in extended trading Thursday. The trigger: confirmation that the platform is joining the S&P 500, a milestone that puts it alongside Meta as only…

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The S&P Dow Jones Indices said Reddit — ticker RDDT — will replace AvalonBay Communities before trading opens on August 18.

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Not a surprise, really. S&P inclusion basically forces index funds to buy your stock whether they like you or not.

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And Reddit needs that kind of cushion right now. Less than three weeks before the index announcement, the company dropped its second quarter earnings.

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CEO Steve Huffman said during the earnings call that search referrals had become unstable. He pointed directly at Google's Gemini-powered AI Overviews — the feature that answers…

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Huffman didn't sugarcoat it. He called the volatility real and tied it specifically to the AI Overview rollout. Investors heard that and sold.

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Read also: Franklin Templeton Gets SEC Green Light to Buy Into Its Own 12-Condition Tokenized Fund

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S&P 500 membership won't fix the traffic issue. It'll bring in a new class of investors who are required to hold the stock regardless of how they feel about the AI search…

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That's the tension sitting underneath the 11% pop. The index inclusion is real and the demand it creates is real.

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Huffman's comments kind of laid that bare. Search referrals aren't a nice-to-have for Reddit. They've been a core acquisition channel.

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So the next few months will probably matter a lot. The initial excitement from S&P inclusion tends to fade.

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Coinbase went through a version of this. The crypto exchange joined the S&P 500 in 2025, a moment that felt significant for digital-first companies broadly.

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Read also: Adyen Lifts 2026 Target as €804 Billion Volume Push Strains Margins

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