Schall, Brown & Schwartz LLP said it is investigating possible securities law violations involving Lennox International, Inc. after the company reported Q2 2026 results on July 29, 2026. The law firm said the inquiry centers on whether Lennox issued false or misleading statements or failed to disclose information relevant to investors. It pointed to the company missing revenue expectations and lowering its full-year forecast, which Lennox blamed on "continued softness in the residential end market." The release said Lennox shares fell by almost 21% the same day and invited shareholders who suffered losses to contact the firm about their rights.