Lennox International Inc. (LII), headquartered in Richardson, Texas, designs, manufactures, and markets products for the heating, ventilation, air conditioning, and refrigeration markets. Valued at $18.1 billion by market cap, the company sells its products and services through direct sales, distributors, and company-owned parts and supplies stores.
Shares of this leader in energy-efficient climate-control solutions have underperformed the broader market over the past year. LII has declined 14.6% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 26.6%. In 2026, LII’s stock is up 4.7%, compared to the SPX’s 8.1% rise on a YTD basis.
