LONDON, April 30, 2026, 15:03 BST
- FTSE Russell will launch the 2026 Russell U.S. index reconstitution process on April 30 with its “Rank Day.” Investors should watch for final index changes, which are set to be published after U.S. markets close on June 26. LSEG
- London Stock Exchange Group plc faces renewed scrutiny, just as the company seeks to prove its index, data, and markets businesses have further upside following a record-breaking first quarter.
London Stock Exchange Group’s FTSE Russell arm on Thursday launched the ranking process for its 2026 Russell U.S. index reconstitution—a rules-based shake-up that ultimately decides which stocks land in, or get bumped from, the widely watched family of U.S. equity benchmarks.
The timing matters—a lot more than just routine index tweaks. Funds, trading firms, and asset managers track these changes closely, since getting added or dropped from an index can send share demand swinging as portfolios shift to match the benchmarks. FTSE Russell says roughly $19.89 trillion tracks its indexes.
The pace shifts this year. FTSE Russell is set to move the Russell U.S. Indexes back to a semi-annual reconstitution in 2026—one revamp in June, another in December. Investors get their initial peek at the ins and outs on May 22, with adjustments trickling in until mid-June. The revamped indexes will take effect after the market’s close on June 26.
LSEG’s timing couldn’t be better. Just last week, it posted a 9.8% increase in first-quarter total income—excluding recoveries—on an organic constant-currency basis, stripping out effects from currency moves and certain transactions. FTSE Russell saw revenue rise 8.8%. The Markets unit surged 15.5% as clients ramped up trading activity during bouts of volatility.
“Great start to 2026,” said Chief Executive David Schwimmer, pointing to LSEG’s ongoing work on its AI-ready data push. More than 150 customers are now linked up or onboarding with the company’s Model Context Protocol server. That tech allows AI models to access outside data sources, but keeps them under fixed controls. LSEG
LSEG is ramping up its involvement in FTSE Russell’s index arm. On April 28, FTSE Russell and LPX AG extended their collaboration in listed private equity, private credit, and alternatives indexes. Under the expanded deal, FTSE Russell takes over calculation, administration, and global distribution duties for LPX’s current slate of indexes. Existing client contracts with LPX remain unchanged.
Gerald Toledano, who runs equity and multi-assets at FTSE Russell, described the LPX tie-up as expanding the firm’s access to what he calls the “full investable universe.” That’s LSEG’s play here: pushing more benchmarks and data into corners of the market beyond plain-vanilla public equities. LSEG
The index provider turf war is intense. S&P Dow Jones Indices, MSCI, and FTSE Russell continue to hold the lion’s share in wealth management. According to S&P Global research, ETFs that follow their benchmarks account for more than half of all ETF assets.
Investors are watching to see if LSEG’s data business can weather AI’s rapid overhaul of how financial professionals source information. “LSEG’s first-quarter results and updated outlook should help ease concerns around the durability of growth,” Will Howlett, financials analyst at Quilter Cheviot, told Reuters. Reuters
Uncertainty continues to shadow LSEG. Hargreaves Lansdown senior equity analyst Matt Britzman pointed to the group’s unique position with its regulated datasets and essential market infrastructure, but cautioned that the threat posed by AI disruption hasn’t gone away. He also suggested investors shouldn’t count on another rapid surge in the shares.
Another factor: LSEG benefited from choppy trading in Q1, but that boost could fade if things calm down. For now, the rough ride continues. Thursday brought more drama—Reuters noted major swings in Europe after oil fell sharply from a four-year peak, while investors kept a close watch on central banks and Middle East unrest.
Now comes the real test. FTSE Russell will release its initial lineup of Russell index changes on May 22, then follow up with updates on May 29, June 5, June 12, and June 18. The official reconstitution happens after the June 26 U.S. market close. Those new indexes go live for trading on June 29.
