US Stock Market Monthly Report — May 2026

2026년 5월 · 월간 리포트

월간 리포트

US Stock Market Monthly Report — May 2026

If May's US stock market could be summed up in one sentence, it would be this: "a month of record highs propelled by an artificial-intelligence (AI) semiconductor rally against the backdrop of resurgent inflation worries." From the first day of the month to the last, the S&P 500 and Nasdaq set new all-time highs on multiple occasions, while the Dow crossed the historic 50,000 mark for the first time and then went on to top 51,000. But underneath that surface, revived inflation and a hawkish (rate-hike-leaning)…

6/1/2026

Index Performance

Item	Symbol	Month-Open	Month-Close	Monthly Return	YTD
S&P 500	SPY	720.65	756.48	+4.97%	+11.24%
Nasdaq 100	QQQ	674.15	738.31	+9.52%	+20.34%
Dow Jones	DIA	494.75	510.78	+3.24%	+6.79%
Russell 2000	IWM	279.28	290.43	+3.99%	+18.19%
10Y Treasury	IEF	94.74	94.65	-0.09%	-0.31%
Fear Index	^VIX	—	—	—	—
Dollar Index	DX-Y.NYB	—	—	+0.91%	—
Gold	GLD	423.18	417.12	-1.43%	+5.25%
Crude Oil	USO	142.80	129.09	-9.60%	+86.65%

May's US stock market was a rally led by technology stocks. The Nasdaq 100 (QQQ), dominated by mega-cap tech names, climbed 9.5% to lead all four major indexes, followed by the S&P 500 at +5.0%, the small- and mid-cap Russell 2000 at +4.0%, and the Dow Jones at +3.2%. With the gap between the Nasdaq and the Dow exceeding 6 percentage points, the advance was concentrated in mega-cap tech rather than spread across the broader market. On a year-to-date basis, the Nasdaq 100 also leads at +20.3% versus the Dow's +6.8%, showing that tech-stock concentration became even more pronounced in May.

Safe-haven assets and commodities were broadly subdued. The 10-year Treasury (IEF) dipped 0.1%, essentially flat, and gold fell 1.4%. Crude oil plunged 9.6%, though it remains up 86.7% year-to-date, meaning May's drop represents a partial give-back of the prior surge. The dollar edged up 0.9%. The pattern — capital flowing into risk assets and out of bonds, gold, and crude — was a textbook risk-on environment.

Sector Rotation

Rank	Sector	ETF	Monthly Return	Prior-Month Rank
1	Technology	XLK	+18.01%	1st
2	Healthcare	XLV	+2.97%	11th
3	Consumer Discretionary	XLY	+1.89%	3rd
4	Industrials	XLI	+0.10%	4th
5	Materials	XLB	-0.39%	8th
6	Financials	XLF	-0.65%	5th
7	Real Estate	XLRE	-0.74%	2nd
8	Communications	XLC	-0.88%	6th
9	Consumer Staples	XLP	-1.50%	7th
10	Energy	XLE	-4.35%	10th
11	Utilities	XLU	-4.58%	9th

The dominant theme in May's sector flows was tech's solo run. Technology (XLK) gained 18.0% to hold the top spot, leading runner-up Healthcare (3.0%) by a dominant 15 percentage points. Only four sectors — Technology, Healthcare, Consumer Discretionary (1.9%), and Industrials (0.1%) — finished higher, while the remaining seven all declined, underscoring how narrowly the gains were distributed.

Rank-change analysis points to a defensive tilt. Healthcare vaulted from 11th to 2nd, while rate-sensitive Real Estate (2nd → 7th) and Utilities (9th → 11th) slipped. When Treasury yields rise, the relative appeal of sectors that depend on dividends and rental income weakens. Energy (-4.4%) and Utilities (-4.6%) anchored the bottom, with Energy's weakness tied directly to May's crude oil price plunge.

Economic Indicators × Market Reaction

Date	Indicator	Expected	Actual	Surprise	Same-Day S&P	Next-Day S&P	VIX Change
2026-05-08	Nonfarm Payrolls	6.2	11.5	5.3	+0.83%	+0.23%	—
2026-05-08	Unemployment Rate	4.3	4.3	0	+0.83%	+0.23%	—
2026-05-12	Core CPI (MoM)	0.3	0.4	0.1	-0.15%	+0.56%	—
2026-05-12	Core CPI (YoY)	2.7	2.8	0.1	-0.15%	+0.56%	—
2026-05-12	CPI (MoM)	0.6	0.6	0	-0.15%	+0.56%	—
2026-05-12	CPI (YoY)	3.7	3.8	0.1	-0.15%	+0.56%	—
2026-05-28	Core PCE (YoY)	3.3	3.3	0	+0.55%	+0.25%	—
2026-05-28	GDP (QoQ, annualized)	2	1.6	-0.4	+0.55%	+0.25%	—
2026-05-28	Personal Spending (YoY)	3.8	3.8	0	+0.55%	+0.25%	—

Employment indicators early in May were robust. On the 8th, April nonfarm payrolls (NFP, the change in jobs excluding agriculture, a key gauge of employment conditions) came in at 11.5, nearly double the 6.2 estimate, reaffirming labor-market strength, while the unemployment rate held steady at the expected 4.3%. On the day of the release, the S&P 500 rose 0.83% in a relief rally. That said, a strong job market cuts both ways — it also reduces the Fed's incentive to cut rates quickly.

Inflation data on the 12th, by contrast, weighed on sentiment. April's headline Consumer Price Index (CPI, a measure of price changes for goods and services bought by consumers) rose 3.8% year-over-year, above the 3.7% estimate, and core CPI (excluding volatile food and energy) also edged above expectations at 2.8% versus 2.7%. Fears of renewed inflation pushed the S&P 500 down 0.15% that day, though losses were contained, and the index rebounded 0.56% the next session.

Late-month data was mixed. On the 28th, core PCE (Personal Consumption Expenditures price index excluding food and energy, the Fed's preferred inflation gauge) rose 3.3% year-over-year, matching expectations, with headline PCE also in line at 3.8%. On the same day, GDP growth (annualized) printed at 1.6%, below the 2.0% estimate, signaling some cooling in growth. The combination of inflation holding firm and growth slowing pushed the S&P 500 up 0.55%. Even so, with inflation showing no meaningful give-back all month, the Fed remained in no position to rush toward rate cuts.

TOP Movers

Top 10 Gainers

Rank	Company	Ticker	Monthly Return	Reason
1	Redwire	RDW	+163.06%	After beating earnings estimates by 28% on May 6, shares surged another 26% in a single day on the 26th to anchor the monthly rally.
2	Innodata	INOD	+138.48%	A massive earnings beat on May 7 was followed by an 86% surge the next day.
3	T1 Energy	TE	+105.05%	Earnings beat estimates by 34% on May 12, followed by a 29% jump on the 26th.
4	Enphase Energy	ENPH	+101.95%	No notable earnings release, but the stock rallied steadily through the month, including a 17% gain on May 21.
5	Dell Technologies	DELL	+100.27%	Earnings beat estimates by 64% on May 28, followed by a 33% surge the next day to cap the rally.
6	Voyager Technologies	VOYG	+86.20%	Earnings on May 4 slightly missed estimates, but the stock climbed 16% on the 8th and continued to post strong gains through the month.
7	Keel Infrastructure	KEEL	+83.82%	Earnings on May 11 missed estimates badly, but a 17% jump on the 6th and other sessions drove a notable monthly rally.
8	Rocket Lab	RKLB	+82.06%	Earnings on May 7 beat estimates by 11%, followed by a 34% surge the next day.
9	Snowflake	SNOW	+81.24%	Earnings on May 27 beat estimates by 22%, followed by a 36% surge the next day.
10	Micron	MU	+79.19%	No earnings release, but the stock rallied strongly through the month, including a 19% surge on May 26.

Top 10 Losers

Rank	Company	Ticker	Monthly Return	Reason
1	Generations Quantum Technologies	XNDU	-55.23%	Earnings on May 14 badly missed estimates, and the stock had already cratered 61% in a single day on the 4th.
2	Ubiquiti	UI	-42.67%	Earnings on May 8 missed estimates by 10%, and the stock slid another 12% on the 11th as weakness persisted.
3	Fastly	FSLY	-36.73%	Earnings on May 6 beat estimates by 50%, but the stock plunged 38% the next day — earnings and shares diverged.
4	Shake Shack	SHAK	-34.62%	Earnings on May 7 missed estimates, and the stock crashed 28% the same day.
5	TransMedics Group	TMDX	-32.81%	Earnings on May 5 missed estimates by 51%, followed by a 23% plunge the next day.
6	Futu Holdings	FUTU	-32.79%	Earnings on May 28 missed estimates by 69%, and the stock had already plunged 28% on the 22nd.
7	Zoetis	ZTS	-31.95%	Earnings on May 7 slightly missed estimates, and the stock fell 22% the same day.
8	Wix	WIX	-30.45%	No notable earnings surprise, but the stock plunged 27% in a single day on May 13.
9	Evolution Metals & Technologies	EMAT	-30.41%	No specific earnings catalyst; the stock was steadily sold off through the month.
10	Primos Services	PRIM	-30.26%	Earnings on May 5 missed estimates by 30%, followed by a 50% crash the next day.

Earnings Season Summary

Out of 2,251 earnings reports this month, 62.8% beat expectations, 35.8% missed, and 1.4% were in line.

In May, 2,251 companies reported earnings, with 62.8% beating market expectations. Misses accounted for 35.8% and in-line results for 1.4%, while the average surprise (the gap between actual results and consensus) came in at 6.07% — an overall solid earnings season.

By sector, the beat rates were highest in Consumer Staples (72.3%), Consumer Discretionary (72.2%), Industrials (71.3%), and Technology (69.9%), and lowest in Healthcare (55.5%), Real Estate (55.7%), Energy (56.8%), and Financials (57.1%). Strong earnings, however, did not always translate into share-price gains. For example, despite having the highest beat rate, Consumer Staples saw the sector's stocks fall 1.5% for the month; meanwhile, Healthcare — with the lowest beat rate — rose to second place on the sector-return table thanks to defensive flows. It is a clear signal that in May, the market responded more to the AI and tech-growth narrative than to the absolute strength of earnings prints.

Monthly Assessment

If May's US stock market could be summed up in one sentence, it would be this: "a month of record highs propelled by an artificial-intelligence (AI) semiconductor rally against the backdrop of resurgent inflation worries." From the first day of the month to the last, the S&P 500 and Nasdaq set new all-time highs on multiple occasions, while the Dow crossed the historic 50,000 mark for the first time and then went on to top 51,000. But underneath that surface, revived inflation and a hawkish (rate-hike-leaning) Fed weighed on sentiment throughout. The tug-of-war between rising indexes and uneasy inflation defined May's big picture.

Semiconductors led the market in the first week. On May 1, Apple jumped more than 3% on strong results, and memory-chip names such as SanDisk, Seagate, and Micron rallied sharply, kicking off the record-high run. On the 5th, Intel surged 13% and Micron's market cap crossed $700 billion for the first time; on the 6th, AMD jumped more than 18% on better-than-expected earnings. On the 8th, news of Apple and Intel's chip collaboration combined with far-better-than-expected April jobs data, sending semiconductor ETFs up more than 5% in a single day — the rally hit peak heat. At the same time, however, the Fear & Greed Index (a 0–100 sentiment gauge where higher readings indicate overheating) climbed to 67, and the Nasdaq's RSI (Relative Strength Index, with readings above 70 signaling overbought conditions) hit 80, flashing short-term overbought warnings.

Oil prices and Middle East geopolitics were another swing factor during this period. Early in the month, news that the UAE had intercepted Iranian missiles sent oil prices surging and the VIX (the "fear index," typically hovering in the 14–16 range) jumping to around 18. Soon after, however, reports of progress in US–Iran peace talks caused oil to reverse sharply. Crude spent May oscillating between gains and losses before ending with a steep monthly decline, which translated directly into weakness in the Energy sector.

The mood shifted in mid-month. April's CPI release on the 12th came in at 3.8% year-over-year, above estimates, sparking renewed fears that inflation was re-accelerating. Semiconductor names such as Qualcomm dropped more than 11%, leading the selling, and capital rotated into defensive sectors like Healthcare and Consumer Staples. On the 13th, the Producer Price Index (PPI, the wholesale price index for goods sold by businesses) also printed hot at 6% year-over-year, but semiconductors and mega-cap tech names lifted the indexes, and word spread that known-hawk Kevin Warsh had been nominated as the next Fed chair. With the prospect of a rate hike during the year now on the table and 2026 rate-cut expectations all but gone, defensive tones deepened.

May 14 marked the month's peak. The Dow crossed 50,000 for the first time and the S&P 500 topped 7,500, with all three indexes hitting record highs simultaneously as AI-infrastructure plays such as Cisco, Broadcom, and Nvidia led the rally. The very next day, May 15, all three indexes fell more than 1% as profit-taking hit the tape. The 30-year Treasury yield climbed to its highest level since 2007, adding to the pressure — and semiconductor names were hit especially hard.

The third week saw continued pullbacks in memory-chip stocks. On the 18th and 19th, Micron and Seagate fell 5–7% on consecutive sessions, and capital rotated back into defensive sectors such as Energy, Consumer Staples, and Financials. The mood reversed on the 20th: comments that the US and Iran were in the final stages of negotiations pulled oil prices down and Treasury yields stabilized, easing both pressure points at once, and semiconductors rebounded sharply as the Dow recaptured the 50,000 level. Nvidia — the market's focal name — delivered earnings and next-quarter guidance both above consensus, but because expectations had already been elevated, the stock's reaction was lukewarm. On the 21st, Walmart plunged 7% on a disappointing outlook, leaving concerns about consumer slowing.

The fourth week opened with Micron's solo run. On the 26th, Micron surged more than 19% in a single day, crossing a $1 trillion market cap to become the 11th-largest US company, and semiconductor ETFs jumped more than 6%. On the 27th, all three indexes hit simultaneous record closing highs for the first time in 2026, but some of the previous day's semiconductor surge names — Qualcomm, Marvell — gave back roughly 6% on profit-taking, with the bid shifting to mega-cap tech like Meta and Amazon. Around this time, market veterans including Dimon also warned of overheating.

Inflation pressure eased somewhat into month-end. On the 28th, the monthly core PCE print (the Fed's preferred inflation gauge, based on personal consumption expenditures) came in below expectations, reviving hopes of cooling inflation; this, combined with news of a US–Iran ceasefire extension, sparked rebounds in semiconductors and software. On the final trading day of the month, the 29th, Dell Technologies skyrocketed 33% on earnings fueled by AI-server demand, pulling Oracle, Palantir, and other software names sharply higher, and the Dow crossed 51,000 for the first time. That said, with nine sectors other than Technology and Financials ending the day in the red, the rally's narrow concentration remained a concern.

Stepping back, May delivered yet another round of record highs for the indexes, but the strength rested on a narrow foundation of AI and semiconductors. Most sectors — and rate-sensitive Real Estate and Utilities in particular — actually lagged, while inflation refused to give the Fed any relief. The market moved into June carrying two stubborn homework assignments: a narrowing breadth under a strong index, and sticky inflation.

What to Watch Next Month

The biggest item on June's calendar is the FOMC (the Federal Reserve committee that sets the US policy rate) decision on the 18th. With May's inflation coming in stickier than expected, all eyes will be on the Fed's direction and messaging. Inflation gauges to watch include the CPI release on the 10th and the PCE print on the 20th, with the jobs report on the 5th also on the docket. On the earnings front, the spotlight falls on the AI-related names that powered May's semiconductor rally — Broadcom leads off on the 3rd, followed by Oracle (10th), Adobe (11th), and Micron (24th). Their results will determine whether May's tech concentration extends further, or whether the market pauses for a breather.

Key Calendar