[US Close] 2026.08.20 S&P 500 falls -0.9% — Market Wrap

S&P 500 closed at 7,641.16, -0.87% on the day and -2.0% over the week — daily change bars for the last 5 sessions

US Market Report · as of 2026-08-20 NY close

🌐 한국어판 보기

The S&P 500 closed at 7,641.16, down 0.87% on the day. Overall regime call: INFLATION.

S&P 500 Close
7,641.16
-0.87% · -2.0% vs peak
VIX
16.0
Calm <20
USD/KRW
1,394.0
-1.38% · 1M -5.8%
Regime
INFLATION
🟢 Entries allowed

📝 US Market Wrap

■ Market Overview & Leaders

Wall Street closed lower Wednesday as bond yields rose and risk appetite soured. The Dow led losses at 52,759.21 (-1.32%), with the S&P 500 off 0.87% to 7,641.16 and Nasdaq down 1.00% to 26,067.17. Notably, the PHLX Semiconductor Index bucked the trend, rising 0.53% to 11,800.02, lifted by AMD (+0.7%) and Broadcom (+0.4%) — a supportive signal for Asian chip stocks like SK Hynix overnight. Walmart was the session’s biggest drag, plunging 9.2% on disappointing results, dragging retail and consumer names like Home Depot and Costco lower alongside GE Aerospace and Eli Lilly.

■ Flows & Breadth

Breadth was decisively negative — just 9 large-cap advancers versus 31 decliners. This weak internals reading aligns with the broader index declines, though the semiconductor strength stands out as a divergence worth watching. VIX spiked 7.52% to 16.01, reflecting rising hedging demand, while the won firmed against the dollar (USD/KRW -1.38% to 1,394.02).

■ Takeaway

Despite broad-based weakness and deteriorating breadth, resilient semiconductors hint at selective risk appetite beneath the surface. 📉

📊 Market Snapshot

Index Close 1D 5D 1M vs Peak
S&P 500 7,641.16 -0.87% -2.0% +1.9% -2.0%
Nasdaq 26,067.17 -1.00% -2.7% +1.5% -3.8%
Dow 52,759 -1.32% -2.0% +1.0% -2.9%
PHLX Semiconductor 11,800.0 +0.53% -5.3% -4.9% -19.4%
VIX 16.0 +7.52% +9.4% -3.8% -27.9%
USD/KRW 1,394.0 -1.38% -1.6% -5.8% -10.3%
💡 Korea Market 101
Alongside the majors, we track the PHLX Semiconductor Index (SOX) — the overnight driver of Korean chipmakers like Samsung Electronics and SK Hynix. A big SOX move often sets the tone for the next KOSPI session. VIX under 20 is calm; above 30 signals fear.

3-month index chart

🏷️ Large-Cap Movers (Today)

Gainers Chg Losers Chg
ExxonMobil +0.8% Walmart -9.2%
AMD +0.7% GE Aerospace -3.3%
McDonald’s +0.6% Home Depot -2.8%
Broadcom +0.4% Eli Lilly -2.8%
Coca-Cola +0.2% Costco -2.5%

Large-cap breadth: 9 up · 31 down (of 40)

💡 Korea Market 101
Today’s biggest US large-cap moves. US sector rotation frequently leads the Korean market by a day — watching where money flows here gives a preview of tomorrow’s Seoul session.

🔄 Sector Rotation

Sector 1M 3M Score Type
Technology +5.4% +4.4% 22.2 Growth
Health Care +16.3% +25.4% 16.8 Defensive
Consumer Discretionary +9.1% +8.8% 10.4 Growth
Energy +10.7% +4.2% 9.7 Defensive
Financials +4.5% +10.4% 8.4 Defensive
Industrials +1.3% +13.3% 8.1
Communication Services +6.7% -6.2% 0.8 Growth
Real Estate +3.6% -2.2% -0.6
💡 Korea Market 101
A ranking of where money is flowing across industries. A higher score means stronger recent price action. ‘Growth’ sectors (chips, IT) lead in good times; ‘Defensive’ sectors (telecom, staples) hold up in downturns. When defensives cluster at the top, the market has turned cautious.

📐 Market Breadth

(40 names)

Above 200-DMA Above 50-DMA Up over 1M 52-wk highs 52-wk lows
70% 60% 70% 20% 2%
💡 Korea Market 101
What the index alone hides. ‘% above 200-DMA’ is the share of stocks in a long-term uptrend — below 50% means most stocks are in long-term decline even if the index isn’t. Comparing new 52-week highs vs lows reveals whether it’s truly a bull or bear tape underneath the headline number.

📰 Headlines

Headlines are credited to their publishers — click a headline to open the original article.

💡 Korea Market 101
English-language coverage of the Korean market. Two Korea-specific terms worth knowing: a ‘circuit breaker’ halts all trading when the index moves too fast, and a ‘sidecar’ briefly suspends program trading — both are exchange safety mechanisms you’ll see mentioned on volatile days.

🌐 Macro Dashboard

Indicator Level 1M Signal
US 10Y yield 0.79
Dollar Index (DXY) 118.90 -1.5%
Gold 4,577 +10.4%
WTI Crude 86.50 +6.9%
Bitcoin 72,565 +12.1%
💡 Korea Market 101
The bigger picture around equities. A rising US 10-year yield raises borrowing costs and pressures stocks. A stronger dollar (higher DXY) tends to pull foreign capital out of emerging markets like Korea. Gold is the fear gauge, oil proxies inflation, and Bitcoin reflects risk appetite.

🌡️ Regime & Risk Diagnosis

  • Regime call: INFLATION — Inflationary — growth with rising price pressure
  • Allocation guide: Tilt toward real assets and value
💡 Korea Market 101
Think of the ‘regime’ as market weather. RISK-OFF means investors are sheltering in cash rather than risk assets. ‘Realized volatility’ is a thermometer for how wildly prices swing — under 20 is calm, above 40 is panic territory. The ‘crash gate’ is our system’s traffic light: when the Korean market falls too fast, it turns red and the system stops buying on its own, then reopens automatically when conditions settle. (Note: the regime diagnosis text is produced in Korean by the engine.)

🎯 System Watchlist

Sectors in focus: Health Care 6 names · Consumer Discretionary 6 names · Financials 5 names · Technology 4 names · Communication Services 2 names

Name Mkt Sector Style Score Target Stop Status
HSIC US Health Care Swing 100 +11.2% -5.6% Watching
ZBRA US Technology Swing 100 +20.0% -10.0% Watching
CINF US Financials Swing 100 +19.0% -9.5% Watching
PFG US Financials Swing 100 +15.6% -7.8% Watching
NWSA US Communication Services Swing 100 +18.3% -9.1% Watching
SBUX US Consumer Discretionary Swing 100 +17.6% -8.8% Watching
DXCM US Health Care Swing 100 +20.0% -10.0% Watching
CDW US Technology Swing 100 +20.0% -10.0% Watching
STLD US Materials Swing 90 +20.0% -10.0% Watching
CHTR US Communication Services Squeeze 90 +20.0% -10.0% Watching
KMB US Consumer Staples Swing 90 +19.6% -9.8% Watching
VRTX US Health Care Swing 90 +19.2% -9.6% Held
💡 Korea Market 101
A scanner screens hundreds of Korean and US stocks daily and scores them on technical and fundamental criteria (max 100). ‘Target’ is the expected gain if the setup works; ‘Stop’ is the pre-committed maximum loss if it doesn’t — the system always defines the exit before entering. ‘Swing’ rides multi-day trends; ‘Squeeze’ waits for dormant stocks to break out. ‘Watching’ means signal registered but not bought; ‘Held’ means the system actually owns it. ⚠️ This is an algorithm’s candidate list, not investment advice. Korean stock names are shown in Korean.

🤖 System Trading Status

Closed today:

Name Mkt Exit type Held P&L
NVDA US ROTATION_EXIT 18d +10.17%
얼라인 테크놀로지 US STOP 2d -8.02%

5 open positions — average unrealized P&L +2.14% (3 winning / 2 losing)

Open positions P&L chart

💡 Korea Market 101
‘Closed’ = sold; ‘open’ = still held. Unrealized P&L assumes selling right now — nothing is locked in until sold. ‘STOP’ means the pre-set safety line was hit and the system sold automatically; ‘ROTATION_EXIT’ means it swapped into a stronger candidate. The one rule this system lives by: cut losses early and automatically, let winners run.

Published 2026-08-21 07:16 KST
For information only — not investment advice or a solicitation. All investment decisions are your own responsibility.

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