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US Stock Market Sector Analysis – Tuesday, March 31, 2026 Sectors: BULLISH

The US stock market rallied on signs of détente and an AI infrastructure deal that reshaped intraday flows: Marvell (MRVL) jumped 12.8% to $98.98 after headlines tied the company to a $2 billion AI infrastructure partnership that helped lift NVIDIA (NVDA) and the chip supply chain. NVIDIA (NVDA) climbed 5.6% to $174.20, part of a broader Mag 7 bounce even as the group remains below its 50-day trend. Super Micro (SMCI) drew conflicting headlines — an indictment story and valuation critiques — but finished up 8.1% at $22.77 as investors rotated into infrastructure names, while United (UAL) surged 8.1% to $92.07 on travel optimism and fuel-surcharge chatter.

Market Condition Dashboard

US 10-Year Treasury Yield
Wait & Watch
4.30%
stable
Impact
Confidence
Crude Oil (WTI)
Alert (Surging)
$101.38
-1.5% 1D
Impact
Confidence
VIX (Fear Index)
Elevated Caution
25.2
-17.5% 1D
Impact
Confidence
200-Day Moving Average
Clearly Bearish
3/3 below
SPY below (-1.2%), QQQ below (-2.7%), DIA below (-0.1%)
Impact
Confidence
Tracked Stocks Breadth (50DMA)
Strong Cash-Deploy Signal
34%
23 of 68 above 50DMA · -2.9pp 5D
Impact
Confidence
Put/Call Ratio (5D)
Normal Range
0.94
Balanced · stable
Impact
Confidence

Signal analysis only — not investment advice

Sector Heatmap (1D)

Memory & Storage +7.88%
AI Networking & Interconnect +6.74%
Airlines +6.63%
Chip Supply Chain +6.22%
Chip Equipment +6.12%
Analog & Embedded Chips +5.56%
EDA & Semiconductor IP +5.51%
Mag 7 (AI Spenders) +4.51%
Finance +4.21%
Infrastructure +4.16%
Logistics +3.92%
Industrial +3.64%
Healthcare +3.55%
Cybersecurity +2.93%
Media & Entertainment +2.80%
Enterprise Software +2.73%
Hospitality & Travel +2.34%
Data Center REITs +2.28%
Food & Restaurant +2.02%
AI Power & Grid +1.84%
Defense & Aerospace +1.59%
Biotech +1.52%
IT Services +1.27%
Retail +0.31%
Utilities -0.04%
Telecom -0.43%
Materials -0.53%
Energy -1.43%
≤-3%0≥+3%

Sector Performance (Base=100)

AI and Technology Sector Analysis

AI spending continues to drive market leadership today, with the Mag 7 providing the anchor for thematic flows: NVIDIA (NVDA) $174.20 and Meta (META) $571.60 led gains as investors priced in new infrastructure commitments. The chip supply chain showed outsized moves — Marvell (MRVL) $98.98 and ARM Holdings (ARM) $151.28 — signaling vendor-level re‑rating on renewed demand. At the same time, AI momentum highlights the gap with enterprise software and services, where 50-day weakness keeps caution on incremental software-routing adoption and on-prem transition spend.

US Stock Sector Overview

Sector 1D 5D 20D vs 50MA
Mag 7 (AI Spenders) +4.5% -1.7% -7.0% BELOW
Chip Supply Chain +6.2% -3.4% +1.6% BELOW
Memory & Storage +7.9% -7.9% -0.3% BELOW
EDA & Semiconductor IP +5.5% -2.8% +1.6% BELOW
Infrastructure +4.2% -7.6% -2.4% ABOVE
AI Networking & Interconnect +6.7% -7.8% -9.0% BELOW
Enterprise Software +2.7% +0.3% -6.1% BELOW
Finance +4.2% +0.0% -2.1% BELOW
Healthcare +3.5% +0.2% -7.5% BELOW
Retail +0.3% +1.6% -1.8% ABOVE
IT Services +1.3% +1.8% -4.3% BELOW
Airlines +6.6% -1.6% -2.1% BELOW
Hospitality & Travel +2.3% -0.3% -1.7% BELOW
Food & Restaurant +2.0% -1.8% -7.0% BELOW
Logistics +3.9% -0.2% -8.9% BELOW
Industrial +3.6% -0.7% -5.7% BELOW
Cybersecurity +2.9% +2.1% -4.4% BELOW
Chip Equipment +6.1% -6.5% -3.6% BELOW
Data Center REITs +2.3% +1.8% +0.3% ABOVE
AI Power & Grid +1.8% -4.6% -3.9% BELOW
Utilities -0.0% +2.0% -0.5% ABOVE
Energy -1.4% +2.4% +12.2% ABOVE
Defense & Aerospace +1.6% -2.3% -7.6% BELOW
Telecom -0.4% -0.1% -2.1% ABOVE
Media & Entertainment +2.8% +2.3% -4.5% BELOW
Biotech +1.5% +0.1% -6.3% BELOW
Materials -0.5% +0.4% +2.8% ABOVE
Analog & Embedded Chips +5.6% -1.1% -6.2% BELOW

Sector Strength

Memory & Storage +7.9% 20d: -0.3%
Sandisk (SNDK) +11.0% (20d: +6.1%), Seagate (STX) +8.1% (20d: +4.6%) [<50MA], Western Digital (WDC) +7.5% (20d: +3.6%) [<50MA]
AI Networking & Interconnect +6.7% 20d: -9.0%
Coherent (COHR) +8.4% (20d: -13.3%), Amphenol (APH) +6.0% (20d: -4.6%) [<50MA], Arista Networks (ANET) +5.7% (20d: -8.9%) [<50MA]
Airlines +6.6% 20d: -2.1%
United (UAL) +8.1% (20d: -8.4%) [<50MA], Delta (DAL) +5.2% (20d: +4.2%)
Chip Supply Chain +6.2% 20d: +1.6%
Marvell (MRVL) +12.8% (20d: +26.8%), Intel (INTC) +7.1% (20d: -3.2%) [<50MA], TSMC (TSM) +6.8% (20d: -5.2%) [<50MA]
Chip Equipment +6.1% 20d: -3.6%
Lam Research (LRCX) +6.9% (20d: -4.2%) [<50MA], KLA (KLAC) +6.5% (20d: -0.2%) [<50MA], Applied Materials (AMAT) +5.8% (20d: -4.5%) [<50MA]

Sector Warnings

Energy -1.4% 20d: +12.2%
Chevron (CVX) -1.8% (20d: +11.2%), Exxon Mobil (XOM) -1.1% (20d: +13.2%)
Materials -0.5% 20d: +2.8%
Linde (LIN) -0.7% (20d: -0.4%), Air Products (APD) -0.4% (20d: +5.9%)
Telecom -0.4% 20d: -2.1%
T-Mobile (TMUS) -1.8% (20d: -4.4%), Verizon (VZ) -0.2% (20d: -2.0%), AT&T (T) +0.7% (20d: +0.0%)

Sector Deep Dive

Chip Supply Chain saw the day's largest rotation as Marvell (MRVL) rose 12.8% to $98.98 and ARM Holdings (ARM) jumped 10.5% to $151.28, giving the sector a 1-day gain of 6.8%. Over the 50-day window the sector is only +3.5% versus more extended weakness earlier, so today's move reads as a tactical re-acceleration tied to discrete AI infrastructure news rather than a clear structural breakout above the 50-day trend.

Infrastructure traded strongly, up 4.2% for the session with Super Micro (SMCI) finishing at $22.77, +8.1% on the day. The group's 50-day context is constructive (+17.3% vs 50MA) and today's flows suggest investors are rotating toward hardware and datacenter plays after headlines, benefitting names that can service the AI buildout despite episodic headline risk.

Airlines and Travel saw a meaningful recovery: United (UAL) climbed 8.1% to $92.07 as travel-related headlines and fuel-surcharge conversations buoyed the group, which sits -8.2% over 50 days. The large 1-day lift signals short-covering and discretionary reopening resilience, but the negative 50-day trend argues for selective exposure to carriers with clearer margin recovery paths.

Enterprise Software is a warning sector after finishing the 50-day window down -15.3%, an active HIGH alert. Select names underperformed the broader market today even as sectors rallied; the 1-day gain of +1.9% masks continued distribution over the 50-day horizon, suggesting investors should prefer software providers with direct AI monetization levers rather than legacy maintenance-heavy franchises.

Market Breadth Analysis

US stock market breadth analysis shows 7 of 28 sectors trading above their 50-day moving average, while 21 are below. With the majority of sectors below the 50-day MA, medium-term momentum is deteriorating. The 20-day breadth shows 23 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 Enterprise Software down -15.9% over 50 days
HIGH Healthcare down -15.5% over 50 days
HIGH IT Services down -21.8% over 50 days
HIGH Cybersecurity down -18.9% over 50 days
HIGH 10 sectors declining >5% over 20 days: Mag 7 (AI Spenders), AI Networking & Interconnect, Enterprise Software, Healthcare, Food & Restaurant, Logistics, Industrial, Defense & Aerospace, Biotech, Analog & Embedded Chips
HIGH 4 sectors declining >10% over 50 days: Enterprise Software, Healthcare, IT Services, Cybersecurity

Stock-Level Detail

Mag 7 (AI Spenders) Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
META $571.60 +6.7% -3.8% -14.2% -5.2% BELOW 0
NVDA $174.20 +5.6% -2.4% -4.7% -2.1% BELOW 0
GOOG $286.69 +5.0% -0.9% -5.4% -10.9% BELOW 0
TSLA $371.75 +4.6% -3.7% -8.4% -11.3% BELOW 0
AMZN $208.27 +3.6% -1.6% -3.9% -9.8% BELOW 0
MSFT $368.68 +3.1% -0.2% -8.6% -18.4% BELOW 0
AAPL $253.34 +2.9% +0.5% -3.3% +3.0% BELOW 0
Chip Supply Chain Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
MRVL $98.98 +12.8% +0.6% +26.8% +24.1% ABOVE 0
INTC $44.13 +7.1% -6.5% -3.2% -9.1% BELOW 0
TSM $337.16 +6.8% -2.8% -5.2% +3.6% BELOW 0
AVGO $309.02 +5.5% -2.9% -2.3% -6.7% BELOW 0
AMD $203.43 +3.8% -7.6% +0.7% -12.3% BELOW 0
QCOM $128.31 +1.3% -1.2% -7.1% -15.9% BELOW 0
Memory & Storage Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
SNDK $635.34 +11.0% -6.3% +6.1% +40.2% ABOVE 0
STX $391.48 +8.1% -5.2% +4.6% +20.4% BELOW 0
WDC $270.42 +7.5% -8.7% +3.6% +21.4% BELOW 0
MU $337.79 +5.0% -11.5% -15.7% -7.4% BELOW 0
EDA & Semiconductor IP Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
ARM $151.28 +10.5% -3.7% +21.9% +41.2% ABOVE 0
SNPS $396.48 +3.5% -3.3% -8.0% -22.4% BELOW 0
CDNS $277.87 +2.6% -1.3% -9.0% -9.5% BELOW 0
Infrastructure Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
SMCI $22.77 +8.1% -5.3% -30.3% -27.5% BELOW 0
VRT $250.53 +7.0% -9.3% -0.3% +43.1% ABOVE 0
HPE $23.74 +5.3% -7.6% +11.2% +17.5% ABOVE 0
CSCO $76.88 +0.7% -5.2% -4.1% +5.8% BELOW 0
DELL $163.35 -0.3% -10.8% +11.6% +47.8% ABOVE 4
AI Networking & Interconnect Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
COHR $238.21 +8.4% -12.4% -13.3% +23.1% ABOVE 0
APH $126.16 +6.0% -1.8% -4.6% -16.9% BELOW 0
ANET $122.78 +5.7% -9.1% -8.9% -3.7% BELOW 0
Enterprise Software Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
PLTR $146.28 +6.3% -5.6% -4.5% -13.2% BELOW 0
ORCL $146.09 +6.0% +0.7% -3.5% -18.2% BELOW 0
CRM $185.72 +0.9% +2.6% -3.3% -15.2% BELOW 0
ADBE $243.08 +0.8% +2.5% -11.0% -16.3% BELOW 0
NOW $104.55 -0.4% +1.4% -8.2% -16.6% BELOW 1
Finance Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
GS $842.28 +4.8% +0.5% -2.5% -9.9% BELOW 0
JPM $291.35 +3.7% -0.4% -1.7% -2.8% BELOW 0
Healthcare Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
LLY $916.88 +3.7% +0.4% -8.4% -11.5% BELOW 0
UNH $269.05 +3.4% +0.0% -6.6% -19.4% BELOW 0
Retail Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
WMT $123.75 +0.6% +1.0% -2.6% +4.9% ABOVE 0
COST $993.41 -0.0% +2.2% -1.0% +3.5% ABOVE 1
IT Services Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
IBM $238.91 +2.2% +0.4% -3.1% -16.3% BELOW 0
ACN $194.29 +0.4% +3.1% -5.6% -27.3% BELOW 0
Airlines Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
UAL $92.07 +8.1% -0.9% -8.4% -15.2% BELOW 0
DAL $66.14 +5.2% -2.2% +4.2% -1.2% ABOVE 0
Hospitality & Travel Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
MAR $325.76 +2.4% +0.1% -2.6% +4.4% BELOW 0
BKNG $167.99 +2.3% -0.6% -0.8% -16.1% BELOW 0
Food & Restaurant Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
SBUX $88.56 +3.3% -3.4% -7.8% -3.7% BELOW 0
MCD $308.70 +0.7% -0.3% -6.3% +3.2% BELOW 0
Logistics Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
FDX $285.94 +4.2% -0.4% -6.9% +18.8% ABOVE 0
UPS $95.23 +3.6% +0.0% -11.0% -6.4% BELOW 0
Industrial Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
CAT $705.80 +6.1% -1.5% -3.2% +12.6% ABOVE 0
HON $235.05 +1.1% +0.1% -8.1% +5.6% BELOW 0
Cybersecurity Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
PANW $160.32 +3.9% +4.6% +1.1% -12.9% BELOW 0
CRWD $97.60 +2.7% +1.2% -4.2% -11.8% BELOW 0
ZS $140.29 +2.2% +0.6% -10.2% -32.0% BELOW 0
Chip Equipment Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
LRCX $213.51 +6.9% -8.5% -4.2% -3.8% BELOW 0
KLAC $146.89 +6.5% -4.6% -0.2% -0.8% BELOW 0
AMAT $341.00 +5.8% -7.5% -4.5% +7.5% BELOW 0
ASML $1316.25 +5.3% -5.2% -5.6% -0.3% BELOW 0
Data Center REITs Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
DLR $179.02 +2.9% +2.1% -0.6% +13.7% ABOVE 0
EQIX $970.78 +1.7% +1.5% +1.2% +25.7% ABOVE 0
AI Power & Grid Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
GEV $872.45 +6.8% -5.5% +3.8% +27.5% ABOVE 0
ETN $355.81 +4.1% -4.6% +1.2% +6.3% BELOW 0
PWR $548.83 +2.9% -4.3% -3.4% +18.5% ABOVE 0
VST $150.12 +1.9% -0.8% -7.9% -4.0% BELOW 0
CEG $278.39 -6.5% -7.9% -13.4% -5.3% BELOW 2
Utilities Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
NEE $92.20 +0.9% +1.9% +0.3% +12.0% ABOVE 0
SO $94.94 -0.4% +2.0% -1.1% +9.5% ABOVE 1
DUK $128.69 -0.6% +2.2% -0.7% +10.5% ABOVE 1
Energy Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
XOM $167.43 -1.1% +3.9% +13.2% +30.9% ABOVE 1
CVX $203.25 -1.8% +0.9% +11.2% +26.4% ABOVE 2
Defense & Aerospace Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
RTX $191.46 +3.1% -1.1% -7.6% -1.4% BELOW 0
LMT $600.46 +1.0% -3.2% -9.0% +5.5% BELOW 0
GD $340.14 +0.7% -2.6% -6.3% -4.4% BELOW 0
Telecom Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
T $28.31 +0.7% +0.6% +0.0% +23.6% ABOVE 0
VZ $48.63 -0.2% -0.3% -2.0% +28.5% ABOVE 3
TMUS $208.90 -1.8% -0.6% -4.4% +14.9% ABOVE 1
Media & Entertainment Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
NFLX $96.15 +3.4% +4.2% -2.5% +10.2% ABOVE 0
DIS $95.65 +2.2% +0.4% -6.5% -12.7% BELOW 0
Biotech Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
GILD $138.46 +2.2% +0.8% -5.4% +12.9% BELOW 0
AMGN $347.18 +0.8% -0.6% -7.2% +7.0% BELOW 0
Materials Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
APD $286.90 -0.4% +0.1% +5.9% +12.5% ABOVE 3
LIN $494.20 -0.7% +0.7% -0.4% +14.8% ABOVE 1
Analog & Embedded Chips Show individual tickers
Ticker Price 1D 5D 20D 50D vs 50MA Down Days
MCHP $63.90 +7.6% -0.8% -7.6% -11.2% BELOW 0
ADI $317.27 +5.0% -1.2% -6.8% +7.9% BELOW 0
TXN $192.17 +4.1% -1.3% -4.1% +3.1% BELOW 0

Key Stock Movers

Today's biggest movers by absolute percentage change: Marvell (MRVL) (Chip Supply Chain) rose 12.8% to $98.98. Sandisk (SNDK) (Memory & Storage) rose 11.0% to $635.34. ARM Holdings (ARM) (EDA & Semiconductor IP) rose 10.5% to $151.28. Coherent (COHR) (AI Networking & Interconnect) rose 8.4% to $238.21. Super Micro (SMCI) (Infrastructure) rose 8.1% to $22.77. These individual stock movements were key drivers of their respective sector performance.

Risk and Opportunity Assessment

On the risk side, 6 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

Breadth favored winners today with 20 sectors up and only 3 down, yet only 7 of 24 sectors remain above their 50MA, underscoring a fragile rally concentrated in chips and infrastructure. Active HIGH alerts — including Enterprise Software, Healthcare, IT Services and Cybersecurity down more than 15-21% over 50 days — argue for defensive positioning in lagging software and services names while selectively adding exposure to AI-capable hardware and chip-supply plays with clear earnings linkage. Monitor sector-level 50-day trends and the count of sectors declining >5% over 20 days as the next reallocation trigger for tactical overweighting.

Hypothetical Portfolio

SIMULATION
Value $101,402
P&L +1.40%
Today +3.07%
View full portfolio → Simulation only. Not investment advice.
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