US Stock Market Sector Analysis – Monday, May 18, 2026 MIXED

A surprise geopolitical reprieve — President Trump's postponement of an Iran strike — set the tone for a mixed session in the US stock market as headlines both calmed and rattled investors. AI leaders sold off on the news, dragging the Mag 7 group modestly lower overall (Mag 7 (AI Spenders) -0.7% on the day) while defensive sectors and select cyclicals earned gains; Enterprise Software climbed (Enterprise Software +4.1%) as ServiceNow (NOW) rallied 8.8% to $103.42. Chip supply chain names slipped modestly (Chip Supply Chain -0.7%) with Applied Materials (AMAT) down to $413.06, and Energy paced sector winners (+2.1%) as rotation into commodity exposures continued. Market breadth was mixed—11 sectors above their 50-day moving averages and 13 below—leaving the S&P 500 in a consolidation phase amid headline-driven flows.

Market Condition Dashboard

US 10-Year Treasury Yield

Sell / Wait

4.61%

rising

Impact

Confidence

Crude Oil (WTI)

Alert (Surging)

$108.66

+3.1% 1D

Impact

Confidence

VIX (Fear Index)

Normal Range

17.8

-3.3% 1D

Impact

Confidence

200-Day Moving Average

Bullish Trend Intact

0/3 below

SPY above (+9.6%), QQQ above (+15.6%), DIA above (+5.2%)

Impact

Confidence

Tracked Stocks Breadth (50DMA)

Pause Discretionary Adds

66%

45 of 68 above 50DMA · +1.5pp 5D

Impact

Confidence

Put/Call Ratio (5D)

Contrarian Sell Signal

0.66

Too Optimistic · stable

Impact

Confidence

Signal analysis only — not investment advice

Sector Performance (Base=100)

AI and Technology Sector Analysis

The AI investment narrative showed strain today as several Magnificent 7 names softened but remained fundamentally constructive: Microsoft (MSFT) $422.62 ticked up 0.4% while NVIDIA (NVDA) $222.06 slipped 1.3%, underscoring profit-taking after recent AI-led gains. Chip supply chain strength (+70.5% over 50 days) still supports hardware investment, but chip equipment volatility — Applied Materials (AMAT) $413.06 down 5.3% — highlights sensitivity to near-term news and demand visibility. Enterprise software momentum (Enterprise Software +4.1% 1d) with ServiceNow (NOW) $103.42 jumping 8.8% points to continued spending on AI-enabled cloud applications, making selective exposure across infrastructure, chips and software the prudent way to play the theme.

US Stock Sector Overview

Sector	1D	5D	20D	vs 50MA
Mag 7 (AI Spenders)	-0.7%	+0.5%	+6.5%	ABOVE
Chip Supply Chain	-0.7%	-1.9%	+29.7%	ABOVE
Infrastructure	-2.1%	+3.0%	+15.3%	ABOVE
Enterprise Software	+4.1%	+6.6%	-1.2%	BELOW
Finance	+0.4%	-0.7%	-0.9%	ABOVE
Healthcare	-1.2%	-0.7%	+11.3%	ABOVE
Retail	+2.0%	+3.8%	+5.1%	ABOVE
IT Services	+3.4%	+3.1%	-10.5%	BELOW
Airlines	-0.2%	-1.9%	-2.2%	BELOW
Hospitality & Travel	+1.2%	-0.4%	-11.5%	BELOW
Food & Restaurant	+1.0%	+1.7%	+1.6%	BELOW
Logistics	-1.7%	-1.6%	-7.5%	BELOW
Industrial	-0.4%	-2.7%	+3.1%	BELOW
Cybersecurity	+4.9%	+15.9%	+34.8%	ABOVE
Chip Equipment	-3.2%	-3.7%	+4.5%	ABOVE
Data Center REITs	+0.1%	-2.6%	-4.6%	BELOW
Utilities	-0.3%	-1.9%	-0.1%	BELOW
Energy	+2.1%	+6.4%	+7.2%	ABOVE
Defense & Aerospace	+2.6%	-0.4%	-2.7%	BELOW
Telecom	+1.8%	-2.3%	-2.3%	BELOW
Media & Entertainment	+2.1%	+0.1%	-1.8%	BELOW
Biotech	-0.3%	-3.4%	-4.0%	BELOW
Materials	+0.1%	-1.0%	+1.4%	ABOVE
Analog & Embedded Chips	-0.9%	-1.6%	+22.1%	ABOVE

Sector Strength

Cybersecurity +4.9% 20d: +34.8%

Zscaler (ZS) +8.5% (20d: +25.1%), CrowdStrike (CRWD) +4.2% (20d: +37.6%), Palo Alto Networks (PANW) +1.9% (20d: +41.5%)

Enterprise Software +4.1% 20d: -1.2%

ServiceNow (NOW) +8.8% (20d: +3.3%), Salesforce (CRM) +3.4% (20d: -4.1%) [<50MA], Adobe (ADBE) +3.2% (20d: +3.4%)

IT Services +3.4% 20d: -10.5%

Accenture (ACN) +5.2% (20d: -8.7%) [<50MA], IBM +1.6% (20d: -12.2%) [<50MA]

Defense & Aerospace +2.6% 20d: -2.7%

RTX Corp (RTX) +2.8% (20d: -6.0%) [<50MA], General Dynamics (GD) +2.6% (20d: +5.4%), Lockheed Martin (LMT) +2.4% (20d: -7.6%) [<50MA]

Energy +2.1% 20d: +7.2%

Chevron (CVX) +2.6% (20d: +5.5%), Exxon Mobil (XOM) +1.6% (20d: +8.9%)

Sector Warnings

Chip Equipment -3.2% 20d: +4.5%

Applied Materials (AMAT) -5.3% (20d: +4.9%), Lam Research (LRCX) -2.4% (20d: +7.6%), ASML -2.0% (20d: +1.1%)

Infrastructure -2.1% 20d: +15.3%

Vertiv (VRT) -8.4% (20d: +8.7%), Dell (DELL) -1.6% (20d: +12.1%), Super Micro (SMCI) -0.6% (20d: +8.5%)

Logistics -1.7% 20d: -7.5%

UPS -1.8% (20d: -8.6%) [<50MA], FedEx (FDX) -1.6% (20d: -6.3%) [<50MA]

Healthcare -1.2% 20d: +11.3%

Eli Lilly (LLY) -1.7% (20d: +9.6%), UnitedHealth (UNH) -0.7% (20d: +13.0%)

Analog & Embedded Chips -0.9% 20d: +22.1%

Microchip Technology (MCHP) -1.2% (20d: +14.6%), Texas Instruments (TXN) -0.7% (20d: +29.6%)

Sector Deep Dive

Cybersecurity rallied as risk-on headlines collided with persistent demand for security software: Zscaler (ZS) $174.69 gained 8.5% and CrowdStrike (CRWD) $154.71 rose 4.2%, driving the Cybersecurity sector to a 1-day advance of +4.9% and an impressive 50-day trend of +33.3% ABOVE its 50MA. The 20-day read is even stronger (+34.8%), signaling a near-term leadership shift as institutional buyers rotate into defensive growth that benefits from elevated geopolitical uncertainty. For portfolio construction, this sector’s 50-day strength argues for adding high-quality subscription franchises when headlines amplify tail risks.

Chip Supply Chain showed a mild pullback today (1d -0.7%) despite an outsized 50-day gain of +70.5% ABOVE the 50MA, reflecting profit-taking after a strong multi-week run. Applied Materials (AMAT) $413.06 was a notable loser, down 5.3% and weighing on the Chip Equipment cohort which itself is +20.8% over 50 days ABOVE its 50MA, while Marvell (MRVL) $168.89 fell 4.5% inside the broader supply chain slump. The 50-day context remains constructive for long-term thematic exposure, but the near-term retracement argues for sizing discipline and using pullbacks to add exposure to names with secular AI/AI infrastructure demand.

Enterprise Software and IT Services diverged intraday: ServiceNow (NOW) $103.42 surged 8.8% and Salesforce (CRM) $179.02 added 3.4%, lifting Enterprise Software +4.1% on the day even as the sector sits below its 50-day average (50d: -11.9% BELOW). IT Services posted strong single-day strength (IT Services +3.4% 1d) with Accenture (ACN) $175.44 up 5.2%, yet the 20-day and 50-day backdrop is weak (IT Services -10.5% over 20 days, -12.9% 50d BELOW), flagging a high-alert environment. Tactical buyers should favor names demonstrating re-acceleration off the lows, while being mindful that the 50-day downtrends signal continued dispersion within the group.

Infrastructure and Data Center-related exposures showed split performance as Infrastructure fell -2.1% 1d despite a positive 50-day trend of +39.4% ABOVE the 50MA, with Vertiv (VRT) $339.66 leading decliners down 8.4% after company-specific flows. Data Center REITs were flat (+0.1%) on the day but remain below their 50-day average (+9.0% 50d BUT listed as BELOW the 50MA), reflecting mixed leasing fundamentals versus longer-term AI-driven demand for capacity. The contrast between solid 50-day gains in core infrastructure and idiosyncratic hits underscores the need to separate platform winners from levered or supply-constrained operators when allocating to the AI infrastructure trade.

Market Breadth Analysis

US stock market breadth analysis shows 11 of 24 sectors trading above their 50-day moving average, while 13 are below. With the majority of sectors below the 50-day MA, medium-term momentum is deteriorating. The 20-day breadth shows 12 sectors in negative territory, pointing to widespread selling pressure.

Interactive Charts

S&P 500 & NASDAQ 100

50-Day Sector Performance

1-Day vs 5-Day Sector Change

Active Alerts

HIGH IT Services down -10.5% over 20 days

HIGH Hospitality & Travel down -11.5% over 20 days

HIGH 3 sectors declining >5% over 20 days: IT Services, Hospitality & Travel, Logistics

HIGH 4 sectors declining >10% over 50 days: Enterprise Software, IT Services, Defense & Aerospace, Biotech

Stock-Level Detail

Mag 7 (AI Spenders) Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
MSFT	$422.62	+0.4%	+3.9%	-0.1%	+3.5%	ABOVE	0
AMZN	$264.86	+0.3%	-0.4%	+6.0%	+24.1%	ABOVE	0
GOOG	$392.87	-0.1%	+2.4%	+19.0%	+28.5%	ABOVE	3
META	$610.64	-0.5%	+1.4%	-8.6%	-5.5%	BELOW	2
AAPL	$297.84	-0.8%	+1.0%	+12.0%	+14.7%	ABOVE	1
NVDA	$222.06	-1.3%	+0.7%	+11.2%	+21.7%	ABOVE	2
TSLA	$409.99	-2.9%	-5.4%	+6.1%	+2.8%	ABOVE	3

Chip Supply Chain Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
ARM	$215.12	+2.8%	+3.5%	+22.6%	+82.9%	ABOVE	0
QCOM	$202.89	+1.1%	-3.2%	+50.2%	+47.4%	ABOVE	0
INTC	$108.17	-0.6%	-10.3%	+63.3%	+137.3%	ABOVE	5
AMD	$420.99	-0.7%	-6.1%	+48.0%	+107.7%	ABOVE	2
AVGO	$420.05	-1.1%	+0.3%	+4.6%	+21.9%	ABOVE	2
TSM	$395.02	-2.1%	-0.3%	+7.6%	+13.9%	ABOVE	2
MRVL	$168.89	-4.5%	+2.7%	+11.6%	+82.4%	ABOVE	2

Infrastructure Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
CSCO	$118.44	+0.6%	+19.7%	+32.5%	+56.8%	ABOVE	0
HPE	$32.90	-0.3%	+9.2%	+14.7%	+52.3%	ABOVE	2
SMCI	$30.85	-0.6%	-5.9%	+8.5%	-3.5%	ABOVE	2
DELL	$238.03	-1.6%	-0.4%	+12.1%	+63.0%	ABOVE	2
VRT	$339.66	-8.4%	-7.5%	+8.7%	+28.5%	ABOVE	2

Enterprise Software Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
NOW	$103.42	+8.8%	+16.2%	+3.3%	-15.2%	ABOVE
CRM	$179.02	+3.4%	+4.8%	-4.1%	-9.5%	BELOW
ADBE	$255.64	+3.2%	+6.1%	+3.4%	-9.5%	ABOVE
PLTR	$135.14	+0.9%	-0.6%	-7.4%	-13.6%	BELOW

Finance Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
JPM	$299.38	+1.0%	-1.4%	-3.9%	+4.3%	ABOVE	0
GS	$942.21	-0.2%	+0.0%	+2.1%	+13.7%	ABOVE	2

Healthcare Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
UNH	$388.91	-0.7%	-1.3%	+13.0%	+37.2%	ABOVE	3
LLY	$988.09	-1.7%	-0.0%	+9.6%	-1.8%	ABOVE	3

Retail Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
COST	$1076.47	+2.6%	+5.3%	+7.2%	+7.2%	ABOVE	0
WMT	$133.34	+1.4%	+2.3%	+3.1%	+7.7%	ABOVE	0

IT Services Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
ACN	$175.44	+5.2%	+4.6%	-8.7%	-14.5%	BELOW	0
IBM	$222.75	+1.6%	+1.6%	-12.2%	-11.4%	BELOW	0

Airlines Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
DAL	$70.07	+0.0%	-0.4%	+0.3%	+16.3%	ABOVE	0
UAL	$92.55	-0.3%	-3.4%	-4.7%	-2.1%	BELOW	2

Hospitality & Travel Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
MAR	$358.47	+1.7%	+2.6%	-4.3%	+9.2%	ABOVE	0
BKNG	$154.68	+0.6%	-3.4%	-18.8%	-12.7%	BELOW	0

Food & Restaurant Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
MCD	$280.57	+2.2%	+2.8%	-6.4%	-14.6%	BELOW	0
SBUX	$106.60	-0.2%	+0.6%	+9.6%	+7.5%	ABOVE	1

Logistics Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
FDX	$296.81	-1.6%	-1.8%	-6.3%	+2.4%	BELOW	2
UPS	$95.53	-1.8%	-1.3%	-8.6%	-2.8%	BELOW	1

Industrial Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
HON	$227.82	+1.9%	-0.1%	-1.7%	-8.1%	BELOW	0
CAT	$863.95	-2.7%	-5.3%	+7.9%	+22.8%	ABOVE	2

Cybersecurity Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
ZS	$174.69	+8.5%	+19.5%	+25.1%	+7.4%	ABOVE
CRWD	$154.71	+4.2%	+13.3%	+37.6%	+42.5%	ABOVE
PANW	$247.55	+1.9%	+14.8%	+41.5%	+49.9%	ABOVE

Chip Equipment Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
ASML	$1472.39	-2.0%	-3.2%	+1.1%	+8.7%	ABOVE	2
LRCX	$277.76	-2.4%	-3.9%	+7.6%	+31.6%	ABOVE	2
AMAT	$413.06	-5.3%	-4.1%	+4.9%	+22.0%	ABOVE	2

Data Center REITs Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
EQIX	$1057.39	+0.3%	-1.7%	-2.9%	+12.5%	ABOVE	0
DLR	$187.25	-0.0%	-3.5%	-6.3%	+5.6%	BELOW	5

Utilities Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
SO	$93.71	+2.1%	+1.1%	+2.8%	-2.8%	BELOW	0
DUK	$122.84	+1.6%	-0.9%	-1.4%	-5.5%	BELOW	0
NEE	$88.39	-4.6%	-5.9%	-1.7%	-3.2%	BELOW	2

Energy Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
CVX	$194.34	+2.6%	+5.5%	+5.5%	+3.5%	ABOVE	0
XOM	$160.49	+1.6%	+7.3%	+8.9%	+7.4%	ABOVE	0

Defense & Aerospace Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
RTX	$175.22	+2.8%	-1.6%	-6.0%	-15.5%	BELOW
GD	$341.61	+2.6%	-1.0%	+5.4%	-4.8%	ABOVE
LMT	$524.87	+2.4%	+1.4%	-7.6%	-20.5%	BELOW

Telecom Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
TMUS	$189.62	+2.9%	-1.4%	-2.4%	-12.3%	BELOW
T	$24.11	+1.7%	-3.2%	-5.6%	-10.3%	BELOW
VZ	$45.98	+0.8%	-2.4%	+1.1%	-5.9%	BELOW

Media & Entertainment Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
NFLX	$89.65	+3.0%	+2.3%	-3.2%	-8.8%	BELOW	0
DIS	$103.12	+1.2%	-2.1%	-0.4%	+2.2%	ABOVE	0

Biotech Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
GILD	$128.82	+0.1%	-3.9%	-2.7%	-11.1%	BELOW	0
AMGN	$324.39	-0.6%	-2.8%	-5.2%	-13.3%	BELOW	3

Materials Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
LIN	$509.25	+0.9%	+1.4%	+3.2%	+6.0%	ABOVE	0
APD	$291.50	-0.7%	-3.4%	-0.5%	+7.6%	ABOVE	3

Analog & Embedded Chips Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
TXN	$300.60	-0.7%	+1.8%	+29.6%	+54.0%	ABOVE	2
MCHP	$92.30	-1.2%	-5.1%	+14.6%	+42.7%	ABOVE	2

Key Stock Movers

Today's biggest movers by absolute percentage change: ServiceNow (NOW) (Enterprise Software) rose 8.8% to $103.42. Zscaler (ZS) (Cybersecurity) rose 8.5% to $174.69. Vertiv (VRT) (Infrastructure) fell 8.4% to $339.66. Applied Materials (AMAT) (Chip Equipment) fell 5.3% to $413.06. Accenture (ACN) (IT Services) rose 5.2% to $175.44. These individual stock movements were key drivers of their respective sector performance.

Risk and Opportunity Assessment

On the risk side, 4 high-severity alerts are currently active, signaling significant sector declines that warrant portfolio risk management attention. Consider reducing exposure to affected sectors and tightening stop-loss levels.

US Stock Market Outlook

Near-term volatility should persist as headline risk (geopolitical and earnings) competes with fundamental AI spending trends; active alerts are elevated — including three sectors down >5% over 20 days and four sectors down >10% over 50 days — signaling selective caution. Breadth metrics are mixed with 11 sectors above their 50MA and 13 below, and the 50-day trend remains a reliable compass: favor sectors and names trading above their 50-day averages for tactical adds while trimming exposure in groups with prolonged 50-day weakness. Positioning advice: maintain core exposure to resilient AI spenders and cybersecurity leaders, use disciplined sizing into chip supply chain pullbacks, and avoid early re-entry in Enterprise Software and IT Services until 50-day momentum confirms recovery.

Hypothetical Portfolio

SIMULATION

Value $120,652

P&L +20.65%

Today +0.20%

View full portfolio → Simulation only. Not investment advice.

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