Investors in the London Stock Exchange Group plc (LSE:LSEG), including Blackstone Inc. (NYSE:BX) and Thomson Reuters Corporation (TSX:TRI), are launching a sale of roughly 28.3 million shares worth about GBP 2.3 billion ($2.9 billion), bookrunners for the deal said. This follows a sale in May of about $3.4 billion shares in the bourse operator as the investor group seeks to offload its stake in LSEG. The consortium, which includes Canada's CPPIB and Singapore's GIC, aims to sell a total of about 43.1 million shares over time in LSEG through the offering, a directed buyback and a sale of call options, bookrunners said.

LSEG separately said it plans to buy back about GBP 750 million worth of limited-voting ordinary shares through an off-the-market purchase. Thomson Reuters, Blackstone, and GIC did not immediately respond to requests for comment. CPPIB declined to comment.

The consortium holds about an 18.7% economic interest and an 11.3% voting interest in LSEG. Following the completion of the latest deals, the group's remaining voting shares and limited-voting ordinary shares will be under a 180-day lock-up period. Thomson Reuters, parent of Reuters News, holds a minority stake in LSEG.

Thomson Reuters and Blackstone had sold financial data firm Refinitiv to the bourse operator in 2021.