By Kathryn Hardison

Antero Resources Corp. will join the S&P MidCap 400, replacing Alleghany Corp.

The transition will be effective prior to the beginning of trading on Thursday, the S&P Dow Jones Indices said Monday.

Berkshire Hathaway Inc., an S&P 500 member, is acquiring Alleghany in a deal that is expected to be completed soon, S&P Dow Jones Indices said. Alleghany owns operating subsidiaries and manages investments, anchored by a core position in property and casualty reinsurance and insurance.

Antero Resources is an independent natural-gas and natural-gas liquids company. It is involved in the acquisition, development and production of unconventional properties located in the Appalachian Basin in West Virginia and Ohio.

Shares of Antero rise 5.7% to $35.86 in after-hours trading.

Write to Kathryn Hardison at kathryn.hardison@wsj.com

(END) Dow Jones Newswires

October 17, 2022 18:14 ET (22:14 GMT)

Copyright (c) 2022 Dow Jones & Company, Inc.
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