US Market Breakdown: AI Capex Fears Meet Hawkish Fed, Week of 20 July 2026

Two things frightened American investors over the past two weeks, and neither of them was a recession. The first was the bill for artificial intelligence. The second was the Federal Reserve. In the completed week to Friday 24 July, the S&P 500 fell 0.6%, the Dow Jones Industrial Average lost 0.4% and the Nasdaq Composite dropped 2.1%, with LPL Research pinning the damage on a technology sector dragged down by a 4.25% slide in the Philadelphia semiconductor index.

The sessions since have been considerably wilder. On Wednesday 29 July a divided Fed left interest rates unchanged and three regional presidents dissented in favour of a rise, the most hawkish split in a decade. The Dow fell 1,153.18 points that day, its worst session since April 2025, and the Nasdaq closed in correction territory. Twenty-four hours later Microsoft reported the fastest Azure growth since 2022, rose 16%, and hauled the index back up again.

For British readers, a note on convention: American tickers are letters rather than numbers, so Microsoft trades as MSFT and Nvidia as NVDA. All figures below run to Thursday 30 July's closing bell, the most recent completed US session.

Wall Street

The week to 24 July was a grind rather than a rout. The S&P 500 finished it at 7,411.98 after adding 0.05% on the Friday, the Nasdaq Composite ended at 24,975.82 having slipped 0.64% that day, and the Dow closed at 51,947.25 after a 235.60-point gain. The Russell 2000 index of smaller American companies fell 1.1% across the week. Every major index remained higher for the year despite the weekly losses.

What followed was a genuine round trip. Monday 27 July saw the Dow climb 262.83 points to 52,210.08 as oil prices collapsed, while the Nasdaq slipped 0.18% to 24,932.08 on a brutal day for chipmakers and the S&P 500 barely moved, up 0.02% to 7,413.18. Tuesday repeated the pattern more forcefully: the Dow surged 537.24 points, or 1.03%, to 52,747.32 on strong industrial earnings, the S&P 500 added 0.21% to 7,428.78, and the Nasdaq again edged lower, down 0.22% to 24,876.91.

Wednesday undid all of it. After the Fed's decision the Dow shed 2.19% to 51,594.14, the S&P 500 fell 1.52% to 7,316.15 and the Nasdaq lost 1.74% to 24,442.94, leaving it 10.1% below its 1 June high of 27,190.21 and formally in its second correction of 2026. Thursday 30 July then delivered the sharpest reversal of the lot. The Nasdaq jumped 2.8% to 25,122.18, snapping a six-day losing streak; the S&P 500 rose 1.7% to 7,437.63, above where it started the fortnight; and the Dow recovered 613.92 points to 52,208.06.

The week's biggest movers

Microsoft produced the standout move of the period. Azure grew 43% in constant currency against StreetAccount forecasts of 40.2%, the fastest quarterly rate since early 2022, and management guided to 45% in the current quarter. The 16% jump that followed was the largest single-day gain in the company's history.

Tesla supplied the worst of it. Shares closed at $319.69 on Thursday 23 July, down 14.5%, after second-quarter margins collapsed and free cash flow turned negative. Operating margin fell 2.7 percentage points to just 1.4%, and the company burned through $1.09bn in the quarter funding its AI and robotics ambitions.

Lockheed Martin and RTX were the fortnight's quiet winners, both jumping on beat-and-raise quarters and record order books as the Pentagon restocks weapons used in the conflict with Iran. Lockheed reached $567.71 and RTX $208.48.

Intel offered a lesson in how a good quarter can still sink a share price. Revenue of $16.1bn was up 25%, the fastest growth in nearly 15 years, and non-GAAP earnings of $0.42 a share doubled consensus. The stock popped almost 13% in after-hours trading, then closed Friday 24 July down 7.89% at $92.32 as investors focused on ballooning capital spending and the cost of the foundry turnaround.

Memory chipmakers took the heaviest punishment on Monday 27 July. SanDisk fell 11.22% and Micron 4.91% after a report that a state-backed Chinese manufacturer had begun mass production of domestically developed DUV lithography equipment, and after a large Shanghai listing by a Chinese memory rival raised the prospect of a price war in high-bandwidth memory. Nvidia, the Nasdaq's largest constituent, led the broader chip complex lower across the same stretch.

Company news in focus

The dominant corporate theme was capital expenditure, and specifically who is paying for it. Alphabet raised its 2026 capex guidance to $195bn-$205bn from $180bn-$190bn. Quarterly capital spending doubled to $44.9bn, exceeding operating cash flow of $39.1bn and producing a free cash flow deficit of $5.9bn - the first negative free cash flow on record for the company. At roughly $1.33 to the pound, the top of that guidance range is about £154bn of spending in a single year.

Meta Platforms lifted the floor of its own 2026 capex range to $135bn-$145bn from $125bn-$145bn, a $10bn increase at the low end in one quarter, while free cash flow fell to $784m as capital spending hit $31.1bn. Amazon went further still, raising its 2026 capex forecast to $220bn from $200bn, citing higher memory costs. Taken together, Amazon, Alphabet, Meta and Microsoft are expected to spend a combined $725bn on capital projects this year, around £544bn and a 77% increase on 2025.

Elsewhere, IBM's second-quarter results on 22 July trailed estimates even after analysts had cut their forecasts to reflect an earlier warning, and the company reduced its full-year growth outlook. UPS raised full-year guidance to roughly $91.2bn of revenue and $7.22 of diluted earnings per share, but booked $891m of after-tax charges tied to its Driver Choice separation programme, saw operating margin fall to 4.1% from 8.6%, and warned that average US daily package volume would decline in the mid-single digits in the third quarter as it unwinds its relationship with Amazon.

Boeing posted a wider-than-expected loss on costs tied to its delayed Air Force One programme, though higher revenue and aircraft deliveries were enough to send the shares up. Coca-Cola beat on both lines and raised full-year earnings growth guidance to 8-9%. And Apple is working through the handover it announced in April, under which John Ternus becomes chief executive on 1 September and Tim Cook moves to executive chairman.

Earnings in focus

This was the peak of the American second-quarter reporting season, with roughly a third of the S&P 500 due in the week to 31 July. In the United States, companies report quarterly rather than half-yearly as most London-listed firms do, and the numbers arrive after the closing bell, which is why so much of the share-price reaction happens in after-hours trading.

Alphabet opened proceedings on 22 July with revenue of $119.8bn, up 24% and ahead of the $116.93bn expected, though adjusted earnings of $2.85 a share fell just short of the $2.89 forecast. Google Cloud revenue rose 82% to $24.8bn and its operating income more than tripled to $8.8bn. The shares still fell heavily, because the cash flow deficit overshadowed the beat.

Microsoft reported on 29 July with revenue of $90.01bn against $87.62bn expected and earnings of $4.74 a share versus $4.25 forecast. Azure revenue passed $100bn for the full financial year for the first time. Meta reported the same evening: revenue of $60.80bn beat expectations and grew 27%, but adjusted earnings of $6.18 a share missed the $7.13 consensus by almost 14%, hit by legal and severance charges, and the shares fell sharply after hours.

Apple and Amazon both reported after Thursday's close. Apple's fiscal third-quarter revenue rose 16.4% to $109.42bn with earnings of $2.02 a share; iPhone revenue climbed 21.7% to $54.25bn, its best third quarter ever, and Mac revenue rose 28.7% to $10.35bn. Services revenue grew 12.1% to $30.74bn, short of targets, and the shares fell around 6% after hours on soft guidance and supply constraints. Amazon rose about 8% after hours on quarterly revenue of $200.6bn, its first quarter above $200bn, with AWS growing 37% to $42.2bn - its fastest in 18 quarters. Reported earnings of $5.75 a share included a $53.4bn non-operating pre-tax gain, largely from its stake in Anthropic, so the operating picture is considerably more modest than the headline suggests.

Sectors in focus

In the week to 24 July the leadership was defensive and unglamorous. REITs, materials, healthcare and consumer staples led the S&P 500, while technology was the clear laggard as the semiconductor index fell 4.25%. That is an unusual configuration for 2026, and it matters more than it might sound.

The Nasdaq's problem is concentration. The index is dominated by a handful of megacap companies whose valuations rest on the same AI growth story, so when that story is questioned - as it was by Alphabet's cash flow deficit and by the memory-chip scare - the index can fall hard even while most other sectors hold up perfectly well. That is precisely what happened: the Nasdaq lost 2.1% in the completed week while the Dow, with its industrial and consumer weighting, lost only 0.4%.

The same concentration works in reverse, which is the other half of the lesson. Microsoft alone was enough to drive the Nasdaq's best session since June on Thursday 30 July. On Wednesday 29 July, by contrast, energy was the only real bright spot as oil rallied, while industrials and technology led the market down.

Macro and the Fed

The Federal Open Market Committee voted 9-3 on 29 July to hold the federal funds rate in a range of 3.50%-3.75%. Dallas Fed president Lorie Logan, Cleveland's Beth Hammack and Minneapolis's Neel Kashkari all dissented in favour of a quarter-point increase, with inflation having run above the Fed's 2% target for more than five years. It was the first time since September 2016 that three policymakers dissented in the same direction, and it was the second meeting chaired by Kevin Warsh, who has removed forward guidance from the committee's post-meeting statements.

Bond markets took the message badly. The 30-year Treasury yield reached 5.244%, its highest since 2007, while the 10-year had already climbed to its highest since January 2025 on 23 July as surging oil revived inflation worries. Jobless claims for the week ended 18 July came in at 187,000, well below the 212,000 economists expected - a strong labour market reading that does nothing to help the doves.

Oil drove much of the rest. Brent crude touched almost $96.78 a barrel during the week to 24 July on fears of supply disruption, then collapsed on Monday 27 July, with September Brent futures down 8.7% to $88.36 and WTI down 7.5% to $82.61 after Iran signalled it would suspend attacks. Brent pushed back above $90 by Wednesday. Gold slipped below $4,000 an ounce before the Fed decision and rebounded 1.3% to $4,081.10, while the dollar index stood at 101.64 and sterling traded at about $1.3340 on 30 July.

Still to come

The July payrolls report on 7 August is the one to diarise. With three Fed presidents already voting for higher rates, a hot labour market reading would sharpen a split that is now the central question hanging over American equities.

This article is for information and education only. It is not financial advice or a recommendation to buy, sell or hold any investment. Always do your own research.