---
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)
generator: "portal-rs"
---

# 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

- [RDDT.US](https://longbridge.com/en/quote/RDDT.US.md)
- [RDTL.US](https://longbridge.com/en/quote/RDTL.US.md)
- [RDYY.US](https://longbridge.com/en/quote/RDYY.US.md)
- [.SPX.US](https://longbridge.com/en/quote/.SPX.US.md)

## Related News & Research

- [Reddit Inc Stock (RDDT) Moved Up by 7.78% on Sep 2: A Full Analysis](https://longbridge.com/en/news/297814759.md)
- [Reddit CEO Steve Huffman to speak at Goldman Sachs Communacopia + Technology Conference](https://longbridge.com/en/news/297656621.md)
- [American Express’ secret social media weapon: an in-house history nerd](https://longbridge.com/en/news/298131264.md)
- [Reddit CEO Steve Huffman reports disposal of 18,000 common shares worth $2.67 million](https://longbridge.com/en/news/297838644.md)
- [What Reddit's ChatGPT citations collapse means for marketers](https://longbridge.com/en/news/297042823.md)

---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**