Constellation Energy By Photo for everythingWith a market cap of $91 billion, Constellation Energy Corporation (CEG) is the world's largest private-sector power producer, with 55 gigawatts of generating capacity across nuclear, natural gas, oil, geothermal, hydro, wind, and solar energy sources. The Baltimore, Maryland-based company is slated to announce its fiscal Q2 2026 results before the market opens on Thursday, Aug. 6. Shares of Constellation Energy have decreased 19.6% over the past 52 weeks, underperforming the broader S&P 500 Index's ($SPX) 18.2% return and the State Street Utilities Select Sector SPDR ETF's (XLU) 6.8% gain over the same period. Despite reporting better-than-expected Q1 2026 adjusted EPS of $2.74, Constellation Energy shares fell 1.3% on May 11. Although quarterly revenue jumped to $11.12 billion from $6.79 billion, driven by contributions from the Calpine acquisition.