✦ Buying the AdjacenciesNarrow moat

Vertiv spent the second half of 2025 buying the parts of the AI data center it did not already sell. The largest was PurgeRite, acquired for about $1 billion in cash with up to $250 million more tied to 2026 performance, completed in December 2025¹: a specialist in flushing, purging and filtering the fluid loops that liquid-cooled racks depend on². Before it came Great Lakes Data Racks & Cabinets for roughly $200 million, adding American rack and enclosure manufacturing, and Waylay, a Belgian generative-AI automation software firm for predictive operations and energy optimization.

Read together, the three purchases are one thesis: own the recurring, unglamorous work around the hardware. Liquid cooling is the fastest-growing part of Vertiv's business and also the part that most needs servicing — fluid chemistry, contamination, commissioning — and PurgeRite attaches a services annuity to every liquid-cooled hall Vertiv ships. Racks put Vertiv inside the physical unit the industry now designs around; software gives it something to sell that carries no copper cost at all.

The discipline question is whether a company trading at more than 50 times earnings should be paying a billion dollars for a flushing-services business. The earnout structure suggests management shares the doubt. Watch PurgeRite's 2026 performance metrics — the ones the extra $250 million depends on — and watch services as a share of revenue. Acquisitions that thicken the annuity are worth the price; acquisitions that merely add revenue at this multiple are not. The next one is larger: in September 2026 Vertiv agreed to buy UtilityInnovation Group, a microgrid and behind-the-meter power business, for about $1.45 billion in cash plus up to $1.15 billion more tied to EBITDA targets, about 13 times UIG's expected 2027 EBITDA at the base price³.