US Index Update

Research evidence excerpt

US Index Update

Global Quantitative and Derivatives Strategy Team Min Moon

Week of Jul 20, 2026 As of Jul 22, 2026 (Close) g +1 (212) 272 ,8456 min.k.moon@jpmorgan.comg

Friday, July 24, 2026

• R2000 Dyne Therapeutics Inc (DYN; R2, R25, RS, G, DF): Dyne Therapeutics is distributing its common stock in a public primary offering. In the offering, Dyne Therapeutics will offer 18,300,000 shares of its common stock. FTSE

Russell has determined this equity offering satisfies the criteria for an intra-quarter update. The equity offering will be effective in the FTSE Russell Indexes on July 24, 2026 (after the close).

Shares Out (M) Indexer Flows S&P Index

Index Announcement Effective on Current New Weight Days to Ticker Name (Sector**) Event Detail Last Price Event Date Close of Wgt Wgt Change Gross Net Trade Old New Shares Shares Rank IWF

(M) (M)

S&P 400 Add 20-Jul-26 23-Jul-26 KRYS Krystal Biotech (HC) Replacing TMHC $ 336.80 0.00 29.48 0.000% 0.247% 0.247% 2.64 -0.22 -0.58 0.00 0.89

S&P 400 Delete 20-Jul-26 23-Jul-26 TMHC Taylor Morrison (CD) Acquired $ 72.47 93.43 0.00 0.189% 0.000% -0.189% -9.38 -18.27 -6.84 225.00 1.00

S&P 600 Add 20-Jul-26 23-Jul-26 TPC Tutor Perini Cor (ID) Replacing KRYS $ 87.00 0.00 52.62 0.000% 0.215% 0.215% 4.86 4.86 7.38 0.00 0.84

S&P 600 Delete 20-Jul-26 23-Jul-26 KRYS Krystal Biotech (HC) Moving to S&P 400 $ 336.80 29.48 0.00 0.489% 0.000% -0.489% -2.86 -0.22 -0.58 5.00 0.89

S&P 600 Add 20-Jul-26 24-Jul-26 VVX V2X Inc (ID) Replacing AVNS $ 81.00 0.00 31.31 0.000% 0.092% 0.092% 2.24 2.24 3.99 0.00 0.65

S&P 600 Delete 20-Jul-26 24-Jul-26 AVNS Avanos Medical I (HC) Acquired $ 24.98 46.83 0.00 0.065% 0.000% -0.065% -5.11 -9.37 -13.39 499.00 1.00