Stock Market This Week (May 25–29, 2026): Dell Ignites AI Rally as Oil Tumbles
U.S. stocks closed a holiday-shortened week at record highs, with the S&P 500 up 1.7% to 7,580.06 for its ninth straight weekly gain as a 33% blowout in Dell reignited the AI-infrastructure trade and a U.S.-Iran ceasefire deal sank crude oil 6%.
The Stock Market This Week at a Glance
A holiday-shortened, four-session week (markets were closed Monday, May 25, for Memorial Day) ended at fresh record highs, powered by an AI-driven tech surge and a sharp drop in oil prices tied to U.S.-Iran de-escalation. The S&P 500 added 1.7%, or about 127 points, to close at 7,580.06 — its ninth consecutive weekly advance and a new all-time high. The Nasdaq Composite led the majors, climbing 2.0% (roughly 529 points) to 26,972.62. The Dow Jones Industrial Average rose 0.9%, about 455 points, to 51,032.46, closing above 51,000 for the first time. The small-cap Russell 2000 lagged but still gained 0.8% to 2,919.34. Year-to-date, the S&P 500 is up roughly 11.5%, the Nasdaq about 13.8%, the Dow near 9.0%, and the Russell 2000 a market-leading 17.1%. The dominant theme: AI capex demand is still accelerating, and cheaper crude is doing the Fed's inflation-fighting for it.
VIX, Yields and Cross-Asset Positioning
Volatility drained out of the tape into month-end. The Cboe Volatility Index (VIX) opened the week near 16.2, traded a tight 15.2–16.6 band, and settled at 15.32 — its lowest close in weeks and well under its trailing one-month average of about 17.5. Treasury yields fell as the Iran ceasefire headlines cooled the inflation premium: the 10-year yield dropped roughly 11 basis points on the week to 4.45%, while the 2-year eased about 9 basis points to near 3.78%, leaving the curve modestly positive. The U.S. Dollar Index slipped about 0.5% to 98.89. Commodities told the week's clearest story. WTI crude (CL=F) tumbled roughly 6% on the week to about $87.86 a barrel — a six-week low and a 17% plunge for May — after the U.S. and Iran reached a preliminary deal to extend their ceasefire and reopen the Strait of Hormuz. Gold (GC=F) firmed about 0.4% to roughly $4,570 an ounce on a softer dollar and safe-haven bid, though it still finished May down about 0.8%.
Weekly Sector Performance Scorecard
Technology dominated on Dell's halo effect, while energy was the lone sector dragged lower by the oil collapse. The full GICS sector scorecard, ranked by this week's move:
| Sector (SPDR) | This Week % | 2026 YTD % |
|---|---|---|
| Technology XLK | +3.8% | +19.3% |
| Communication Services XLC | +2.1% | +9.3% |
| Consumer Discretionary XLY | +1.9% | +2.2% |
| Industrials XLI | +1.5% | +11.5% |
| Financials XLF | +1.2% | -4.0% |
| Materials XLB | +1.0% | +10.5% |
| Real Estate XLRE | +0.9% | +11.5% |
| Health Care XLV | +0.6% | -2.4% |
| Utilities XLU | +0.4% | +7.1% |
| Consumer Staples XLP | +0.1% | +10.7% |
| Energy XLE | -3.2% | +34.1% |
Energy remains 2026's runaway YTD leader at +34.1% despite this week's oil-driven setback, while financials (-4.0%) and health care (-2.4%) are the only sectors still red on the year.
Biggest Stock Movers This Week
DELL +40%. Dell logged its best day on record Friday, jumping 32.8%, after a blowout fiscal Q1. Revenue rose 88% year over year to $43.8 billion, adjusted EPS hit $4.86 versus the $2.94 consensus, and AI-server revenue exploded 757% to $16.1 billion. Management raised its FY27 revenue outlook to about $167 billion — with $60 billion from AI servers — and exited the quarter with a record $51.3 billion AI backlog. Shares are now up more than 230% in 2026.
SNOW +40%. Snowflake capped its own banner week, soaring on a beat-and-raise that showcased accelerating consumption from AI and data-platform workloads — a read-through that lifted the broader enterprise-software complex.
OKTA +25%. The identity-software vendor surged after a strong quarter and raised guidance, with revenue of about $765 million (+11% YoY) reassuring investors on enterprise security spend.
NTAP +18%. NetApp rallied on a quarterly beat driven by high-margin all-flash storage demand tied to AI workloads, underscoring the data-infrastructure capex theme.
HPE +16%. Hewlett Packard Enterprise rode a sympathy rally off Dell's print and its own AI-server momentum, adding to the week's hardware-led leadership.
GAP -15%. Gap was the S&P 500's worst performer after slashing its full-year outlook, blaming weak dress sales at its Old Navy division — a reminder that discretionary retail remains uneven.
ASTS -15%. AST SpaceMobile tumbled after Blue Origin's New Glenn rocket exploded late Thursday, a setback that rippled through space names and dragged RKLB down more than 6%.
Macro and Policy: What Drove Markets This Week
The data calendar was back-loaded into Thursday, May 28. The second estimate of Q1 GDP was revised down to a 1.6% annualized pace from the initial 2.0%, on softer consumer spending and investment. The Fed's preferred inflation gauge, April PCE, ran hot on the headline at +0.4% month-over-month and +3.8% year-over-year — the firmest annual reading in nearly three years — though core PCE was tamer at +0.2% monthly and +3.3% annually, in line with forecasts. Initial jobless claims for the week ended May 23 rose 5,000 to 215,000, slightly above the 213,000 estimate, with the four-week average near 209,000. The week's defining catalyst, though, was geopolitical: a tentative 60-day U.S.-Iran ceasefire memorandum promising unrestricted Strait of Hormuz shipping crushed crude, softened the dollar, and pulled yields lower — even as the White House had not formally approved the deal. There was no Fed meeting; attention now turns to the June 16–17 FOMC.
Earnings Season Snapshot
With roughly 485 of the S&P 500 having now reported Q1 results, about 78% have topped EPS estimates and roughly 62% beat on revenue, with blended earnings growth tracking near 11% year-over-year. This week's off-cycle reporters — Dell, NetApp, HPE, Snowflake, and Okta — reinforced the season's clearest theme: companies levered to AI infrastructure and enterprise data are posting the biggest upside surprises, while consumer-facing names like Gap continue to disappoint on guidance.
What to Watch Next Week
- ISM Manufacturing PMI (Monday, June 1) and ISM Services PMI (Wednesday, June 3) open June's data flow.
- May nonfarm payrolls (Friday, June 5) headline the week, with JOLTS job openings and ADP private payrolls (both June 3) as the appetizers.
- Earnings: Broadcom (AVGO), CrowdStrike (CRWD), and Lululemon (LULU) lead a lighter post-season slate.
- Fed speakers make their final remarks before the pre-FOMC blackout ahead of the June 16–17 meeting.
- Treasury auctions of 3- and 6-month bills plus shorter coupons test demand with yields near three-week lows.
- Iran ceasefire and oil: watch for formal approval — or collapse — of the Hormuz deal and its read-through to crude.