---
title: "Reddit joins the S&P 500 Tuesday. Here's what history says could come next -- and what investors should know."
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/296004632.md"
description: "Shares of the social media company jumped double digits on the news. Decades of research say the pop is usually the whole prize."
datetime: "2026-08-15T16:04:41.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/296004632.md)
  - [en](https://longbridge.com/en/news/296004632.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/296004632.md)
---

# Reddit joins the S&P 500 Tuesday. Here's what history says could come next -- and what investors should know.

Shares of the social media company jumped double digits on the news. Decades of research say the pop is usually the whole prize.

### Related Stocks

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- [Reddit (RDDT) Could Be 43% Undervalued Following Its S&P 500 Addition](https://longbridge.com/en/news/296035486.md)
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