** Shares of utility Constellation Energy CEG.O falls 5.8% to $233.97 premarket

** CEG misses Q1 adjusted profit estimates, hurt by higher operating and interest expenses

** Co posts Q1 adjusted profit of $2.14 per share vs est. of $2.22 per share - data compiled by LSEG

** CEG's Q1 net income falls nearly 87% to $118 million from a year earlier

** Co reaffirms 2025 adjusted earnings to between $8.90 per share and $9.60 per share vs est. of $9.51 per share

** Up till last close, stock up 2.3% YTD

(Reporting by Pooja Menon in Bengaluru)

((Pooja.Menon@thomsonreuters.com;))