Resideo Technologies just took a 20% hit in a single session, with the stock closing at US$20.46 after sitting above US$25 yesterday. That is a brutal reset for a building technologies business that had already been sliding over the past month.

The short term story is all pain. The headline from the earnings is different. Resideo delivered a record quarter with revenue around US$2.0b and adjusted earnings per share of US$0.83. Management is now guiding the stand alone Products & Solutions business toward multi billion revenue and higher adjusted EBITDA over 2026.

Is Resideo Technologies suddenly a bargain after this 20% drop, or is the low P/E signaling a deeper issue with cash flow and debt coverage? Compare the market reaction with…