Solaris Energy Infrastructure Set to Join S&P SmallCap 600
NEW YORK, July 9, 2026 /PRNewswire/ -- Solaris Energy Infrastructure Inc. (NYSE:SEI) will replace Catalyst Pharmaceuticals Inc. (NASD: CPRX) in the S&P SmallCap 600 effective prior to the opening of trading on Wednesday, July 15. Angelini Pharma S.p.A. is acquiring Catalyst Pharmaceuticals in a deal expected to close soon, pending final closing conditions.
Following is a summary of the changes that will take place prior to the open of trading on the effective date:
Effective Date | Index Name | Action | Company Name | Ticker | GICS Sector | |
July 15, 2026 | S&P SmallCap 600 | Addition | Solaris Energy Infrastructure | SEI | Energy | |
July 15, 2026 | S&P SmallCap 600 | Deletion | Catalyst Pharmaceuticals | CPRX | Health Care | |
ABOUT S&P DOW JONES INDICES
S&P Dow Jones Indices is the largest global resource for essential index-based concepts, data and research, and home to iconic financial market indicators, such as the S&P 500® and the Dow Jones Industrial Average®. More assets are invested in products based on our indices than products based on indices from any other provider in the world. Since Charles Dow invented the first index in 1884, S&P DJI has been innovating and developing indices across the spectrum of asset classes helping to define the way investors measure and trade the markets.
S&P Dow Jones Indices is a division of S&P Global (NYSE:SPGI), which provides essential intelligence for individuals, companies, and governments to make decisions with confidence. For more information, visit www.spglobal.com/spdji/en/.
FOR MORE INFORMATION:
S&P Dow Jones Indices
index_services@spglobal.com
Media Inquiries
spdji.comms@spglobal.com
View original content:https://www.prnewswire.com/news-releases/solaris-energy-infrastructure-set-to-join-sp-smallcap-600-302822362.html
SOURCE S&P Dow Jones Indices
