US Stock Market Sector Analysis – Friday, September 18, 2026 Sectors: MIXED

Sandisk (SNDK) led today's tech rebound after an 11.0% surge that pushed Memory & Storage to a 6.2% sector gain, driving a Nasdaq lift as chip supply chain names rallied. The move followed headlines highlighting renewed appetite for photonics and chip suppliers, helping Chip Supply Chain tick up 0.4% and Chip Equipment surge 5.3% on the day. The US stock market finished mixed with 11 sectors up and 13 down while the S&P 500 reflected the patchwork advance; the Magnificent 7 group was essentially flat, with NVIDIA (NVDA) +1.3% and Microsoft (MSFT) -0.8% anchoring divergent leadership. Broader breadth remains uneven: only 9 sectors sit above their 50-day moving averages while 19 remain below, keeping market participants selective into the close.

Market Condition Dashboard

US 10-Year Treasury Yield

Sell

5.01%

rising

Impact

Confidence

Crude Oil (WTI)

Elevated

$95.47

-6.3% 1D

Impact

Confidence

VIX (Fear Index)

Normal Range

14.8

-4.1% 1D

Impact

Confidence

200-Day Moving Average

Bullish Trend Intact

0/3 below

SPY above (+6.6%), QQQ above (+9.0%), DIA above (+3.4%)

Impact

Confidence

CNN Fear & Greed Index

Fear Zone

Fear (+0)

Impact

Confidence

Tracked Stocks Breadth (50DMA)

Add Cash

41%

35 of 85 above 50DMA · -5.9pp 5D

Impact

Confidence

Put/Call Ratio (5D)

Caution

0.78

Call-Heavy · stable

Impact

Confidence

Signal analysis only — not investment advice

Sector Heatmap (1D)

Memory & Storage +6.24%

Chip Equipment +5.33%

Analog & Embedded Chips +3.45%

AI Networking & Interconnect +2.04%

EDA & Semiconductor IP +1.93%

AI Power & Grid +0.72%

Industrial +0.65%

Airlines +0.62%

Biotech +0.51%

Chip Supply Chain +0.36%

Healthcare +0.25%

Telecom +0.19%

Retail +0.05%

Hospitality & Travel -0.03%

Materials -0.13%

Mag 7 (AI Spenders) -0.21%

Energy -0.40%

Finance -0.45%

Food & Restaurant -0.48%

Defense & Aerospace -0.48%

Data Center REITs -0.80%

Infrastructure -0.89%

Logistics -0.92%

Utilities -1.09%

Enterprise Software -1.37%

Cybersecurity -2.14%

Media & Entertainment -3.61%

IT Services -4.09%

≤-3%0≥+3%

Sector Performance (Base=100)

AI and Technology Sector Analysis

The AI investment theme shows bifurcated strength: Mag 7 names continue to underpin demand for compute and services while specialty hardware and networking stage catch-up rallies. NVIDIA (NVDA) $222.27 and Microsoft (MSFT) $493.78 trade above their 50-day trends and remain primary drivers of AI infrastructure spend, even as Memory & Storage beneficiaries like Sandisk (SNDK) $1791.82 and Seagate (STX) $858.79 jumped on renewed end-market expectations. Attention should pivot to the chip supply chain and EDA & Semiconductor IP where names are snapping shorter-term downtrends; progress in AI Networking & Interconnect and storage economics will define whether capacity investments accelerate or stall.

US Stock Sector Overview

Sector	1D	5D	20D	vs 50MA
Mag 7 (AI Spenders)	-0.2%	+0.7%	+5.0%	ABOVE
Chip Supply Chain	+0.4%	+7.2%	+8.9%	ABOVE
Memory & Storage	+6.2%	+9.8%	+8.2%	ABOVE
EDA & Semiconductor IP	+1.9%	+5.9%	-0.4%	BELOW
Infrastructure	-0.9%	+5.4%	+8.2%	ABOVE
AI Networking & Interconnect	+2.0%	+8.0%	-11.8%	ABOVE
Enterprise Software	-1.4%	-3.0%	+1.8%	ABOVE
Finance	-0.4%	-2.4%	-5.0%	BELOW
Healthcare	+0.2%	-0.2%	-5.8%	BELOW
Retail	+0.0%	-2.4%	-1.3%	BELOW
IT Services	-4.1%	-7.4%	-2.4%	BELOW
Airlines	+0.6%	-0.2%	-3.7%	BELOW
Hospitality & Travel	-0.0%	-2.4%	-12.4%	BELOW
Food & Restaurant	-0.5%	-3.4%	-9.4%	BELOW
Logistics	-0.9%	-3.1%	-4.7%	BELOW
Industrial	+0.6%	+2.9%	-3.3%	BELOW
Cybersecurity	-2.1%	+0.4%	+11.3%	ABOVE
Chip Equipment	+5.3%	+5.4%	-6.6%	BELOW
Data Center REITs	-0.8%	+2.3%	-4.3%	BELOW
AI Power & Grid	+0.7%	+2.8%	-0.8%	BELOW
Utilities	-1.1%	-1.5%	-3.2%	BELOW
Energy	-0.4%	-1.1%	+0.6%	ABOVE
Defense & Aerospace	-0.5%	-0.3%	-7.0%	BELOW
Telecom	+0.2%	-6.2%	-3.5%	ABOVE
Media & Entertainment	-3.6%	-8.0%	-7.3%	BELOW
Biotech	+0.5%	+2.1%	-4.7%	BELOW
Materials	-0.1%	-0.9%	-6.2%	BELOW
Analog & Embedded Chips	+3.5%	+2.6%	-0.5%	BELOW

Sector Strength

Memory & Storage +6.2% 20d: +8.2%

Sandisk (SNDK) +11.0% (20d: +12.3%), Seagate (STX) +6.9% (20d: +1.0%), SK Hynix (HYNX) +5.2% (20d: +26.7%)

Chip Equipment +5.3% 20d: -6.6%

Lam Research (LRCX) +7.0% (20d: -8.2%) [<50MA], Applied Materials (AMAT) +6.5% (20d: -9.7%) [<50MA], KLA (KLAC) +4.7% (20d: -3.8%) [<50MA]

Analog & Embedded Chips +3.5% 20d: -0.5%

Analog Devices (ADI) +3.6% (20d: +0.7%), Microchip Technology (MCHP) +3.5% (20d: -3.1%) [<50MA], Texas Instruments (TXN) +3.3% (20d: +0.9%) [<50MA]

AI Networking & Interconnect +2.0% 20d: -11.8%

Coherent (COHR) +7.2% (20d: +9.6%), Arista Networks (ANET) -0.1% (20d: +5.7%), Amphenol (APH) -1.0% (20d: -50.6%) [<50MA]

EDA & Semiconductor IP +1.9% 20d: -0.4%

ARM Holdings (ARM) +4.0% (20d: +13.3%), Synopsys (SNPS) +1.0% (20d: -3.2%) [<50MA], Cadence Design Systems (CDNS) +0.8% (20d: -11.3%) [<50MA]

Sector Warnings

IT Services -4.1% 20d: -2.4%

Accenture (ACN) -4.7% (20d: -2.2%), International Business Machines (IBM) -3.4% (20d: -2.6%) [<50MA]

Media & Entertainment -3.6% 20d: -7.3%

Netflix (NFLX) -4.7% (20d: -9.8%) [<50MA], Disney (DIS) -2.5% (20d: -4.7%) [<50MA]

Cybersecurity -2.1% 20d: +11.3%

CrowdStrike (CRWD) -3.3% (20d: +23.8%), Palo Alto Networks (PANW) -3.1% (20d: +1.6%), Zscaler (ZS) -0.1% (20d: +8.6%)

Enterprise Software -1.4% 20d: +1.8%

ServiceNow (NOW) -2.2% (20d: +5.4%), Salesforce (CRM) -2.0% (20d: +13.7%), Oracle (ORCL) -2.0% (20d: +0.8%)

Utilities -1.1% 20d: -3.2%

Southern Co (SO) -1.4% (20d: -3.8%) [<50MA], NextEra Energy (NEE) -1.0% (20d: -3.8%) [<50MA], Duke Energy (DUK) -0.9% (20d: -1.9%) [<50MA]

Sector Deep Dive

Memory & Storage outperformed today, led by Sandisk (SNDK) $1791.82, which rallied +11.0% and pushed the sector to a 6.2% daily gain; Seagate (STX) $858.79 added +6.9%. Over the 50-day window the sector remains below its 50MA by -8.2% versus the recent breakout in short-term momentum (20d +8.2%), suggesting a tactical mean-reversion trade as inventory digestion aligns with renewed AI demand.

Chip Equipment displayed notable strength as Lam Research (LRCX) $288.11 climbed +7.0% and Applied Materials (AMAT) $444.57 rose +6.5%, lifting the group to a 5.3% daily gain. Despite today's bounce, the 50-day context shows the sector down -18.4% relative to its 50MA and flagged as a high alert, indicating this rally may be an oversold bounce inside a longer corrective phase until order flow confirms a durable recovery.

AI Networking & Interconnect moved higher with Coherent (COHR) $317.36 up +7.2% as the sector gained +2.0% on the day, yet it sits materially weak over the 50-day horizon at -15.6% relative to its 50MA and down -11.8% over 20 days. The contrast between strong headline performance and extended 50-day weakness highlights rotational buying into select optics and interconnect names while overall sector fundamentals and demand cadence remain under scrutiny.

Enterprise Software struggled into the close, with the sector down -1.4% for the day despite pockets of resilience among AI-focused vendors; the group trades above its 50-day moving average by +25.6% but posted a 5-day decline of -3.0%, signaling short-term profit-taking. Within the 50-day framework the strength is intact, suggesting a higher-quality leadership base in the S&P and reinforcing a selective approach to software exposure in the broader sector analysis.

Market Breadth Analysis

US stock market breadth analysis shows 9 of 28 sectors trading above their 50-day moving average, while 19 are below. With the majority of sectors below the 50-day MA, medium-term momentum is deteriorating. The 20-day breadth shows 21 sectors in negative territory, pointing to widespread selling pressure.

Interactive Charts

S&P 500, NASDAQ 100 & Dow Jones (%)

Green shading marks breadth-below-50% regimes: BUY at the 5th session (vertical line on the fire day), STRONG at the 10th (darker). A 3rd day back above 50% ends the regime; tolerated recovery days still count toward the session total. Research display only — not investment advice.

50-Day Sector Performance

1-Day vs 5-Day Sector Change

Active Alerts

HIGH AI Networking & Interconnect down -11.8% over 20 days

HIGH Hospitality & Travel down -12.4% over 20 days

HIGH EDA & Semiconductor IP down -18.2% over 50 days

HIGH AI Networking & Interconnect down -15.6% over 50 days

HIGH Chip Equipment down -18.4% over 50 days

HIGH 8 sectors declining >5% over 20 days: AI Networking & Interconnect, Healthcare, Hospitality & Travel, Food & Restaurant, Chip Equipment, Defense & Aerospace, Media & Entertainment, Materials

HIGH 6 sectors declining >10% over 50 days: EDA & Semiconductor IP, AI Networking & Interconnect, Airlines, Industrial, Chip Equipment, Analog & Embedded Chips

Stock-Level Detail

Mag 7 (AI Spenders) Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
NVDA	$222.27	+1.3%	+5.4%	+3.5%	+5.4%	ABOVE	0
AMZN	$253.71	+1.0%	+0.1%	-1.9%	+3.4%	BELOW	0
GOOG	$344.41	+0.2%	-0.4%	+0.8%	-3.0%	ABOVE	0
AAPL	$336.13	-0.3%	+0.9%	+8.7%	+6.7%	ABOVE	1
TSLA	$364.27	-0.5%	+1.5%	+0.4%	-10.7%	ABOVE	1
MSFT	$493.78	-0.8%	-2.3%	+2.2%	+28.5%	ABOVE	1
META	$665.75	-2.4%	+0.0%	+21.1%	-0.5%	ABOVE	1

Chip Supply Chain Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
AVGO	$357.61	+3.0%	+3.7%	-2.9%	-10.6%	BELOW	0
AMD	$559.82	+2.7%	+13.5%	+18.3%	+0.3%	ABOVE	0
MRVL	$244.25	+1.4%	+11.6%	+3.0%	+3.6%	ABOVE	0
TSM	$434.67	+1.0%	+4.3%	+3.8%	+0.1%	ABOVE	0
INTC	$108.60	-0.2%	+11.7%	+20.6%	-1.1%	ABOVE	1
QCOM	$177.72	-5.8%	-1.3%	+10.6%	-6.0%	ABOVE	1

Memory & Storage Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
SNDK	$1791.82	+11.0%	+15.5%	+12.3%	-6.5%	ABOVE
STX	$858.79	+6.9%	+6.6%	+1.0%	-5.7%	ABOVE
HYNX	$29.62	+5.2%	+13.5%	+26.7%	N/A	N/A
WDC	$441.36	+4.1%	+3.4%	-3.9%	-24.2%	BELOW
MU	$1015.80	+3.9%	+9.9%	+5.1%	+3.7%	ABOVE

EDA & Semiconductor IP Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
ARM	$275.61	+4.0%	+15.3%	+13.3%	-14.8%	ABOVE
SNPS	$384.97	+1.0%	+0.9%	-3.2%	-13.6%	BELOW
CDNS	$282.90	+0.8%	+1.4%	-11.3%	-26.4%	BELOW

Infrastructure Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
VRT	$249.39	+3.3%	+5.1%	-4.8%	-21.8%	BELOW	0
HPE	$60.76	-0.5%	+9.9%	+13.7%	+25.2%	ABOVE	1
CSCO	$109.51	-0.7%	-0.5%	-1.4%	-9.7%	BELOW	1
SMCI	$39.09	-3.1%	+6.4%	+5.0%	+38.1%	ABOVE	1
DELL	$568.06	-3.5%	+6.3%	+28.5%	+30.8%	ABOVE	1

AI Networking & Interconnect Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
COHR	$317.36	+7.2%	+19.1%	+9.6%	-2.2%	ABOVE	0
ANET	$199.39	-0.1%	+6.2%	+5.7%	+6.6%	ABOVE	1
APH	$77.55	-1.0%	-1.3%	-50.6%	-51.2%	BELOW	1

Enterprise Software Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
PLTR	$177.64	+0.8%	+2.5%	-1.3%	+40.1%	ABOVE	0
ADBE	$248.92	-1.5%	-6.3%	-9.6%	+11.3%	BELOW	1
ORCL	$147.61	-2.0%	+1.9%	+0.8%	+5.0%	ABOVE	1
CRM	$237.92	-2.0%	-8.1%	+13.7%	+45.7%	ABOVE	4
NOW	$135.47	-2.2%	-4.8%	+5.4%	+25.8%	ABOVE	4

Finance Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
JPM	$349.67	+0.1%	-0.1%	-0.5%	+3.9%	BELOW	0
GS	$942.00	-1.0%	-4.7%	-9.4%	-10.7%	BELOW	1

Healthcare Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
UNH	$376.90	+0.5%	-1.7%	-3.4%	-11.2%	BELOW	0
LLY	$1152.93	+0.0%	+1.3%	-8.2%	-2.9%	BELOW	0

Retail Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
COST	$895.31	+0.2%	-2.6%	-5.5%	-2.1%	BELOW	0
WMT	$106.73	-0.1%	-2.2%	+2.9%	-6.1%	BELOW	4

IT Services Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
IBM	$229.55	-3.4%	-7.8%	-2.6%	-19.6%	BELOW	1
ACN	$181.29	-4.7%	-7.0%	-2.2%	+34.1%	ABOVE	1

Airlines Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
UAL	$108.71	+1.0%	-0.2%	-3.9%	-13.7%	BELOW	0
DAL	$79.62	+0.2%	-0.2%	-3.4%	-8.9%	BELOW	0

Hospitality & Travel Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
MAR	$338.92	+1.5%	-0.5%	-4.9%	-9.7%	BELOW	0
BKNG	$167.90	-1.5%	-4.2%	-19.9%	-5.9%	BELOW	2

Food & Restaurant Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
MCD	$248.24	-0.1%	-3.6%	-8.4%	-9.6%	BELOW	4
SBUX	$95.83	-0.9%	-3.3%	-10.5%	-9.1%	BELOW	2

Logistics Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
FDX	$303.65	-0.7%	-2.9%	-6.6%	-3.5%	BELOW	1
UPS	$99.06	-1.1%	-3.3%	-2.9%	-10.5%	BELOW	1

Industrial Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
CAT	$808.99	+1.3%	+3.2%	-2.3%	-14.9%	BELOW	0
HON	$206.46	-0.0%	+2.5%	-4.4%	-8.5%	BELOW	2

Cybersecurity Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
ZS	$197.31	-0.1%	+2.9%	+8.6%	+41.7%	ABOVE	1
PANW	$363.58	-3.1%	-2.8%	+1.6%	+11.6%	ABOVE	2
CRWD	$237.65	-3.3%	+1.0%	+23.8%	+27.0%	ABOVE	1

Chip Equipment Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
LRCX	$288.11	+7.0%	+5.3%	-8.2%	-17.8%	BELOW
AMAT	$444.57	+6.5%	+4.8%	-9.7%	-26.1%	BELOW
KLAC	$176.99	+4.7%	+4.7%	-3.8%	-23.5%	BELOW
ASML	$1679.92	+3.1%	+6.7%	-4.8%	-6.4%	BELOW

Data Center REITs Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
EQIX	$1021.34	-0.4%	+2.3%	-4.1%	-2.4%	BELOW	1
DLR	$182.12	-1.2%	+2.4%	-4.5%	+0.9%	BELOW	1

AI Power & Grid Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
ETN	$424.77	+3.7%	+8.0%	+1.3%	+4.6%	ABOVE	0
PWR	$636.71	+3.3%	+2.4%	-0.4%	-3.3%	BELOW	0
GEV	$940.33	+1.7%	+7.5%	-1.7%	-13.9%	BELOW	0
VST	$140.67	-2.0%	-0.0%	+3.3%	-11.5%	BELOW	1
CEG	$254.71	-3.1%	-3.7%	-6.7%	+1.5%	BELOW	1

Utilities Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
DUK	$117.53	-0.9%	-1.3%	-1.9%	-5.5%	BELOW	1
NEE	$80.47	-1.0%	-1.4%	-3.8%	-8.5%	BELOW	1
SO	$85.52	-1.4%	-1.7%	-3.8%	-9.8%	BELOW	1

Energy Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
XOM	$163.54	+0.2%	-0.9%	-1.0%	+18.5%	ABOVE	0
CVX	$209.51	-1.0%	-1.3%	+2.1%	+19.8%	ABOVE	1

Defense & Aerospace Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
RTX	$194.00	+0.2%	-0.7%	-7.6%	-0.7%	BELOW	0
GD	$353.05	-0.8%	-1.1%	-8.1%	-5.9%	BELOW	2
LMT	$533.38	-0.9%	+0.8%	-5.4%	+1.9%	BELOW	1

Telecom Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
TMUS	$168.18	+1.0%	-8.0%	-8.1%	-10.4%	BELOW	0
T	$25.40	+0.0%	-4.2%	+0.4%	+20.2%	ABOVE	0
VZ	$48.09	-0.5%	-6.2%	-2.8%	+14.2%	ABOVE	3

Media & Entertainment Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
DIS	$102.67	-2.5%	-5.5%	-4.7%	+7.4%	BELOW	2
NFLX	$71.79	-4.7%	-10.6%	-9.8%	-2.2%	BELOW	4

Biotech Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
AMGN	$385.65	+1.5%	+1.1%	-12.2%	+6.7%	BELOW	0
GILD	$150.11	-0.5%	+3.1%	+2.7%	+15.6%	ABOVE	1

Materials Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA	Down Days
LIN	$460.40	+0.4%	-0.9%	-5.6%	-13.1%	BELOW	0
APD	$284.18	-0.7%	-1.0%	-6.9%	-5.1%	BELOW	3

Analog & Embedded Chips Show individual tickers

Ticker	Price	1D	5D	20D	50D	vs 50MA
ADI	$375.72	+3.6%	+4.1%	+0.7%	-5.0%	ABOVE
MCHP	$73.27	+3.5%	+2.5%	-3.1%	-16.8%	BELOW
TXN	$266.64	+3.3%	+1.2%	+0.9%	-14.0%	BELOW

Key Stock Movers

Today's biggest movers by absolute percentage change: Sandisk (SNDK) (Memory & Storage) rose 11.0% to $1791.82. Coherent (COHR) (AI Networking & Interconnect) rose 7.2% to $317.36. Lam Research (LRCX) (Chip Equipment) rose 7.0% to $288.11. Seagate (STX) (Memory & Storage) rose 6.9% to $858.79. Applied Materials (AMAT) (Chip Equipment) rose 6.5% to $444.57. These individual stock movements were key drivers of their respective sector performance.

Risk and Opportunity Assessment

On the risk side, 7 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

Market leadership is currently concentrated and conditional: active alerts show multiple sectors with extended 50-day weakness (including EDA & Semiconductor IP and Chip Equipment) even as 8 sectors have declined more than 5% over 20 days. With just 9 sectors above their 50-day moving averages, breadth metrics warn of selective risk-taking; investors should favor stocks with improving 50-day trends and clear earnings or demand catalysts. Tactical positioning should overweight resilient AI infrastructure names while using strength in Memory & Storage and select chip suppliers for rotation trades, and keep hedges on for sectors still under high-alert declines.

Hypothetical Portfolio

SIMULATION

Value $129,276

P&L +29.28%

Today +0.24%

View full portfolio → Simulation only. Not investment advice.

← 2026-09-17

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