Brad Jacobs is betting big on insulation. QXO announced a $17 billion acquisition of TopBuild on Sunday night, the building supply company's largest deal yet. TopBuild sells and installs insulation for both residential and commercial markets across the United States.

This deal represents another chapter in Jacobs' extensive dealmaking career. He has completed over 500 transactions throughout his lifetime across numerous public companies he founded. Most of these companies carry the "XO" suffix in their ticker symbols, a signature of his business approach.

The acquisition positions QXO to consolidate a fragmented insulation market. TopBuild's nationwide footprint and installation capabilities complement QXO's building supply distribution network. The deal reflects Jacobs' strategy of rolling up specialized construction material sectors into larger platforms.