Amazon Raised Its AI Spending And Had Its Best Day In Years

Accelerating for its fifth consecutive quarter alongside a growing contracted backlog, the cloud segment addressed key investor concerns regarding its elevated capital expenditures.

Amazon.com (AMZN) closed Friday at $271.58, up 15.3% from Thursday’s close of $235.50, following its Q2 earnings release. Bloomberg’s closing-bell coverage called it the stock’s best day since 2012. This was mostly company-specific. Over the same period, the S&P 500 gained 0.7%, Microsoft (MSFT) rose 3.0%, and Walmart (WMT) added 0.1%. Alphabet (GOOGL), the strongest of the three peers, gained 6.7%—less than half of Amazon’s surge. This marked a sharp reversal in sentiment for Amazon, which had fallen for seven consecutive sessions through Wednesday before rebounding 3.9% on Thursday.

The AI Bill Just Went Up By Twenty Billion Dollars

The worry hanging over the stock was the spending, and the release did not ease it. Amazon now expects roughly $220 billion of cash capital spending in 2026, raised from a prior estimate of about $200 billion, and the company attributes the increase to the higher cost of memory. For scale, revenue over the trailing twelve months was $775.7 billion, and June-quarter sales were $200.6 billion, up 20% year over year. That is the bill. The question Friday had to settle was who is paying it, and what all that spending eventually pays back.

So Who Has Already Signed Up To Pay It?

Amazon’s cloud unit supplied the answer. AWS revenue rose 37% year over year to $42.2 billion, the fifth straight quarter of acceleration and, by the company’s own account, its fastest growth in 18 quarters, back when the unit was less than half its present size. It added more than $4.6 billion of revenue sequentially, about 80% more than its largest previous quarter-on-quarter increase, and it now runs at a $169 billion annualized rate. Behind that sits a backlog of $496 billion, growing at a triple-digit rate year over year. Management says the lion’s share of 2027 capacity is largely reserved already and that a meaningful slice of 2028 is spoken for too. The demand is contracted, not hoped for.

Did Any Of That Spending Land On Margins?

It did not, and that is what changed minds. In the same June quarter that carried $53.1 billion of capital spending, the cloud unit earned $16.6 billion of operating income on that $42.2 billion of revenue, a margin just over 39%. That is 650 basis points wider year over year on the company’s own numbers, or 520 basis points wider excluding a one-off gain on energy contracts that are carried at fair value. The company’s framing is that the economics of its AI business track what the core cloud business did at the same stage, slightly ahead of it.

The Cash Flow Question: The Results Did Not Settle

Demand is settled. Cash is not. Management is explicit that free cash flow faces headwinds until the new data centers open and start earning, and that even at $220 billion the company expects to run short of capacity against 2026 demand. The nearer marker is easier to check. June-quarter operating income of $27.5 billion included roughly $1.2 billion of one-off help from tariff refunds and that energy-contract adjustment, which puts the clean figure near $26.3 billion. Against that, guidance of $22.5 billion to $26.5 billion for Q3 2026 barely clears the bar at its top end. The calendar works against Q3 2026 too: the company says Prime Day fell in the June quarter for most of its largest countries and sat entirely in Q3 in 2025, and it flags that shift as a driver of the slower sales growth it guides to.

Friday’s close of $271.58 also leaves the stock about $3.40 short of its 52-week high of $274.99, so there is less cushion in the price than there was on Thursday. The honest read is that the cloud business is accelerating on contracted demand, and the live question is whether the guidance keeps climbing while the spending does. A ranking of businesses whose guidance is actually moving higher is where to check that.

A Fifteen Percent Session Runs In Both Directions

None of this argues against owning Amazon.com. The cloud acceleration is contracted, and the spending has customers attached to it. But a stock that can add 15.3% in one session on one set of numbers can give it back on the next set, and the seven straight down days that ended on Wednesday came from the same tape. That swing is why a rules-based portfolio built to compound exists: it spreads the bet across many names and does not lean on any single company’s capacity bookings landing on schedule. The Trefis High Quality (HQ) Portfolio has a track record of outpacing a benchmark that combines the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000.