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[US Close] 2026.08.19 S&P 500 flat (+0.2%) — Market Wrap

S&P 500 closed at 7,707.98, +0.21% on the day and -0.5% over the week — daily change bars for the last 5 sessions

Written by

Prunus mume

in

US Market Report · as of 2026-08-19 NY close

🌐 한국어판 보기

The S&P 500 closed at 7,707.98, up 0.21% on the day. Overall regime call: INFLATION.

S&P 500 Close
7,707.98
+0.21% · -1.2% vs peak
VIX
14.9
Calm <20
USD/KRW
1,386.8
-1.98% · 1M -6.0%
Regime
INFLATION
🟢 Entries allowed

📝 US Market Wrap

■ Market Overview & Leaders

US benchmarks snapped their losing streak, with the S&P 500 up 0.21% to 7,707.98, the Nasdaq adding 0.16% to 26,331.09, and the Dow gaining 0.22% to 53,463.05, as Treasury buyback plans calmed a jittery bond market. But under the hood, chips told a different story: the PHLX Semiconductor Index tumbled 2.12% to 11,738.23, dragged down by Broadcom (-4.6%), Intel (-4.0%), AMD (-3.7%) and Applied Materials (-3.5%) — a warning sign likely to weigh on Asian chip names overnight. Healthcare stole the show instead, with Merck surging 12.6%, Eli Lilly up 4.5% and Amgen up 4.0%, while Tesla jumped 4.2%.

■ Flows & Breadth

Breadth was modestly positive among large caps at 24 advancers versus 16 decliners, roughly aligning with the indices’ gains. The VIX sank 6.00% to 14.89, signaling calmer nerves, while USD/KRW slid 1.98% to 1,386.76.

■ Takeaway

Headline strength masks a real semiconductor air pocket — a divergence investors should watch closely as it could ripple into tech-heavy markets abroad. 📈

📊 Market Snapshot

Index Close 1D 5D 1M vs Peak
S&P 500 7,707.98 +0.21% -0.5% +2.6% -1.2%
Nasdaq 26,331.09 +0.16% -1.0% +1.9% -2.8%
Dow 53,463 +0.22% -0.6% +2.4% -1.6%
PHLX Semiconductor 11,738.2 -2.12% -5.3% -5.0% -19.8%
VIX 14.9 -6.00% +2.3% -12.7% -33.0%
USD/KRW 1,386.8 -1.98% -1.8% -6.0% -10.8%
💡 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
Merck +12.6% GE Aerospace -5.0%
Salesforce +5.1% Broadcom -4.6%
Eli Lilly +4.5% Intel -4.0%
Tesla +4.2% AMD -3.7%
Amgen +4.0% Applied Materials -3.5%

Large-cap breadth: 24 up · 16 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 +5.3% +6.9% 23.6 Growth
Health Care +17.6% +27.0% 18.4 Defensive
Consumer Discretionary +9.1% +10.4% 11.8 Growth
Energy +11.3% +3.0% 10.0 Defensive
Financials +3.8% +10.5% 8.5 Defensive
Industrials +1.7% +13.8% 8.4 —
Materials -0.1% +2.8% 7.3 —
Communication Services +3.8% -5.4% 0.9 Growth
💡 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% 65% 68% 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 0.85 — ▼
Dollar Index (DXY) 118.90 -1.5% —
Gold 4,580 +12.5% ▼
WTI Crude 86.50 +6.9% —
Bitcoin 69,339 +8.5% —
💡 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 · Technology 4 names · Financials 3 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
NVDA US Technology Swing 100 +20.0% -10.0% Held
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
NTRS US ROTATION_EXIT 12d +1.98%

5 open positions — average unrealized P&L +4.40% (4 winning / 1 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 2026-08-20 07:16 KST
For information only — not investment advice or a solicitation. All investment decisions are your own responsibility.

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