---
title: "Why Solaris Energy Infrastructure (SEI) stock is up today"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/292353370.md"
description: "Solaris Energy Infrastructure (SEI) shares rose 5.9% after S&P Dow Jones Indices announced its inclusion in the S&P SmallCap 600 index, effective July 15. This addition replaces Catalys."
datetime: "2026-07-10T19:59:47.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/292353370.md)
  - [en](https://longbridge.com/en/news/292353370.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/292353370.md)
generator: "portal-rs"
---

# Why Solaris Energy Infrastructure (SEI) stock is up today

What Happened? Shares of mobile power and logistics company Solaris Energy Infrastructure (NYSE:SEI) jumped 5.9% in the afternoon session after S&P Dow Jones Indices announced the company will be added to the S&P SmallCap 600 index. The inclusion will be effective prior to the opening of trading on Wednesday, July 15, with Solaris replacing Catalys...

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## Related News & Research

- [Northland Securities Forecasts SEI FY2026 Earnings](https://longbridge.com/en/news/296739865.md)
- [Solaris Energy Infrastructure: Buy Rating Reiterated as Strong Quarter and Contract Extensions Support Unchanged $104 Price Target](https://longbridge.com/en/news/295021681.md)
- [Korea Investment CORP Invests $5.98 Million in TransUnion $TRU](https://longbridge.com/en/news/296885826.md)
- [Meritage Group LP Takes Position in TransUnion $TRU](https://longbridge.com/en/news/296774023.md)
- [Deployable Energy Welcomes Strategic Investment and Commercialization Collaboration with Solaris Energy Infrastructure | SEI Stock News](https://longbridge.com/en/news/295413110.md)

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