Should You Buy Vertiv Stock For Its Widening Margin Despite Delivery Doubts?

Vertiv (VRT) supplies the power and cooling systems inside AI data centers, and its stock sits near $240, about 64% of its 52-week high. It is still up about 73% over the past twelve months. The open question is delivery, after some revenue from large projects slipped out of the second quarter of 2026. Even so, Vertiv’s operating margin has widened in each of the last three years.

How Far Has Vertiv’s Operating Margin Climbed?

Vertiv’s operating margin was 9.6% three years ago. It rose to 15.1%, then 17.4%, and reached 19.4% over the last twelve months. That is roughly twice as much operating profit from every dollar of sales.

For the adjusted margin gain in the second quarter of 2026, management cites productivity and pricing that ran ahead of costs. Tariffs took back part of it. The company expects price to stay ahead of cost across 2026, tariffs included.

Does The Delivery Slip Show Up In Vertiv’s Profits?

Not so far. In the second quarter of 2026, the same quarter in which revenue slipped, adjusted operating profit still beat the midpoint of Vertiv’s own guidance. The trouble sat in revenue timing, and management blames multiphase project execution and supply chain congestion it calls temporary.

A year earlier, in the second quarter of 2025, the stumble was different. It dented that quarter’s margin, through problems in Ireland and with busbar switchgear, which the CEO says Vertiv has more than made up for. Management adds that part of the congestion now sits inside its own supply chain, where Vertiv factories feed one another on large projects.

None of that makes the risk disappear. Analysts have asked whether bigger, more complex projects turn the slip into a recurring problem, and the CEO agrees complexity is increasing. Management says its guidance for the second half of 2026 already assumes some of that congestion continues.

What Would Show Vertiv Can Carry The Second-Half Ramp?

The ramp is steep. Net sales rose 24% year on year in the second quarter of 2026. Management guides sales for the third quarter of 2026 up 40% from a year earlier, at the midpoint. New capacity is meant to help, including Johor in Malaysia and expansions at five large plants in the Americas.

The stock is not cheap on earnings. At 53.2 times trailing earnings, the price appears to assume the margin keeps widening through that ramp. If the ramp slips again, a multiple that high may leave little room for disappointment.

The test comes with results for the third quarter of 2026. Sales near that 40% guide, with the trailing operating margin holding at or above 19.4%, would show the learning curve management describes is working. A dip-buying screen is one place to size up a pullback like this one.

So Do You Pay Up For Vertiv’s Margin?

Perhaps, if you can hold while the delivery question is still open. The margin makes a real case, but it rests on one company’s factories and project deadlines. Before buying, compare Vertiv with other stocks that have pulled back from their highs. And if you would rather not stake your money on one supplier’s execution, look at the Trefis High Quality Portfolio. That portfolio has a track record of outpacing the three major indices.