Vertiv Stock After Q3 2026 Earnings: Customers Now Prepay 94% of What They Owe

Over the five months Vertiv's stock lost almost half its value, its customers paid it more and more in advance. By September 30 they'd paid $4.12 billion for equipment they hadn't received yet, which is 94% of the $4.38 billion they owed it on invoices. A year earlier it was 40%. The stock went the other way. It closed at $208.56 on October 27, about 45% below its May high of $376.23, on the worry that AI data-centre spending is close to its peak, and in the week before the print RBC, Mizuho and Morgan Stanley all trimmed their targets.

I think the prepayments say more about Vertiv than the share price does. Buyers who expect a glut don't usually pay a supplier months before delivery. They do that when they're worried about losing their place in line.

The quarter itself, reported on October 28, was big. Net sales were $4.31 billion, up 61%, organic orders (leaving out acquisitions and currency) more than doubled, and the 2026 sales guidance went up by $650 million. The stock rose 13% in the morning. What it didn't give was a backlog, the value of orders not yet shipped, which Vertiv hasn't published since Q4 2025. On the call executive chairman Dave Cote added that "we're not planning to share orders data going forward." Companies often stop publishing a number when it's about to look worse, so I'd be suspicious too. But the prepayment line is on the balance sheet, and they can't stop publishing that. I think it's also a read on who sets the terms.

I compare the two balances on the same date because they're mirror images. Receivables are what customers owe for things already delivered. Advances are what they've paid for things not yet delivered. When buyers hold the power, the first is much bigger. When the supplier does, the second catches up.

For most of 2025 Vertiv looked like a normal equipment maker, with customers owing it more than twice what they'd paid ahead. That changed in Q4 2025, when organic orders rose about 252% and backlog doubled to $15.0 billion, the last quarter Vertiv published either. The gap closed over the next three quarters. The balance rose in every quarter of 2026, from $1.81 billion to $4.12 billion, and that $2.31 billion is most of why operating cash flow was $2.66 billion in the first nine months against $1.11 billion a year earlier. Customers have funded a good share of this year's expansion.

Vertiv calls the line deferred revenue and doesn't split equipment advances from prepaid service. I've left out the long-term part, which it says is mostly maintenance and warranty contracts. The short-term part grew 3.6 times in a year, while service sales grew 14% in 2025, so I'm fairly confident most of the increase is equipment, though Vertiv doesn't say so.

Last week I used the same test on Bloom Energy. The pitch for every AI power stock is scarcity, and if a supplier really is scarce I'd expect its customers to pay before delivery. Here are five companies I cover, including the two that compete with Vertiv inside the same data halls: Eaton in power and Trane in cooling.

GE Vernova is the extreme. Its customers are reserving turbine slots years out, and CFO Ken Parks said on its Q3 call that working capital brought in $5.3 billion, "driven primarily by down payments on increased orders." Bloom has moved from 13% to 53%. A year ago Vertiv was below where Bloom is now, and it has since reached 94%.

The two direct rivals are the useful part. Eaton sells uninterruptible power supplies, the battery systems that keep servers running through an outage, and switchgear into the same buildings, and it had $24.1 billion of backlog at June 30. Its ratio went from 12% to 15% in a year. Trane, which competes with Vertiv in data-centre cooling, went from 42% to 51% in the first half of 2026. Both are moving the same way, which matters for the counter-case below, but neither is anywhere near Vertiv, and both started from a lower base and moved less.

This partly answers something I left open in the Bloom piece. The bull case there was that a product which ships in months can't ask for prepayment the way a turbine with a multi-year queue can. Vertiv sits between the two, since CEO Gio Albertazzi said on the call that orders are still placed about 12 to 18 months out. So lead time explains some of the gap with Bloom. I don't think it explains the gap with Eaton and Trane, whose equipment goes into the same projects, and I'd expect on similar schedules. How badly the buyer needs that particular supplier explains the rest.

InvestMoat scores each company on the sources of its competitive advantage, its moat, plus growth and valuation. Here's where the five sit now.

The framework doesn't score payment terms, and I didn't change Vertiv's moat ratings when I refreshed its numbers for this quarter. Its strongest point is what happens after the sale: installed power and cooling gear doesn't get pulled out mid-life, and the service contract runs with it. Before the sale, its advantages in bundling power with cooling and in manufacturing scale are rated intact, a notch below strong, because Schneider and Eaton compete for every new hall at similar scale. The prepayments are the first hard evidence I've seen that buyers treat Vertiv differently from those rivals, and that's what would eventually move those ratings. I want to see it last first.

The obvious objection is that I'm reading a shortage as a moat. When equipment is scarce, buyers pay ahead to anyone who can ship it, and those terms go away when supply catches up. Trane's and Eaton's ratios rising this year fits that. On this view, Vertiv's line says data-centre power and cooling are tight in 2026 and nothing about whether buyers will still prefer Vertiv in 2028. It's a fair objection, and it's why I haven't moved the ratings.

The second problem is in Vertiv's own Q3 numbers. The ratio peaked at 97% in June and slipped to 94% in September, because advances grew 13% in the quarter while sales grew 32%. Inventory has also more than doubled in a year, to $3.29 billion. If the scramble for capacity is easing, this is where it would show first, with customers still ordering but paying later.

Third, the definitions flatter Vertiv. Bloom, Eaton and GE Vernova report contract assets and Vertiv doesn't break one out. If I counted all $744 million of its other current assets as owed, which overstates it, the ratio would drop to about 80%. Some of the advances could also be prepaid service, and large prefabricated projects, where whole power rooms are built in a factory and shipped, may simply carry upfront milestone payments whatever the leverage.

And Eaton and Trane could be the wrong controls. Both are broader companies, and if their data-centre contracts carry big advances, they'd be lost in totals that include homes, office buildings, aircraft parts and truck components.

I can't settle the first objection with one year of data. What I can say is that the change at Vertiv is large, it started in the quarter orders jumped 252%, and it has gone far further than at the two rivals over the same months. The 80% figure is a floor built on an assumption I know is too harsh, and it's still double where Vertiv was a year ago. The Q3 slip is the part I'd watch most closely, because it's the first quarter since the shift began in which advances grew more slowly than both sales and receivables.

Vertiv reports Q4 early next year. Without orders or backlog, the chart at the top is what I'll update. If the paid-ahead line keeps pace with receivables, customers are still queuing, and the selloff priced a peak that the balance sheet doesn't show. If it stalls while receivables keep rising, that's the first sign of the slowdown the stock was priced for, and it should show here before it shows in sales. I'm not making a price call in this piece; the scorecard above has the framework's live read on the stock.

The test I'm setting is 75%. If Vertiv's advances fall below three quarters of its receivables at any quarter-end through September 2027, customers have gone back to paying on delivery, and I've misread a shortage as a moat. Eaton and Trane both report Q3 soon, and I'll check whether their lines keep catching up.