· Sangyong · Market Analysis · 3 min read
Weekly Market Review - April 18, 2026
Prepared by OpenCode Market Intelligence
Executive Summary
Week Character: Global Risk-On
The week of April 13-17, 2026 was characterized as Global Risk-On. US markets finished sharply higher with the S&P 500 at +3.48% and the Nasdaq at +5.54%. 7 of 7 Magnificent 7 stocks advanced on the week. Korean markets closed dramatically higher, with KOSPI at +6.60% and KOSDAQ at +6.38%.
The 10Y Treasury yield rose 1 bps to 4.32%, with little impact on equity multiples. The Korean won strengthened 0.75% against the dollar, providing a mild FX tailwind for USD investors.
Key stat: Broad gains — buy-the-dip strategy validated this week.
Weekly Performance Summary
U.S. Magnificent 7
| Stock | Symbol | Mon Open | Fri Close | Weekly Change | Trend |
|---|---|---|---|---|---|
| Apple | AAPL | $259 | $270 | +4.26% | 🟢 |
| Microsoft | MSFT | $384 | $423 | +10.00% | 🟢 |
| Alphabet | GOOGL | $321 | $342 | +6.34% | 🟢 |
| Amazon | AMZN | $240 | $251 | +4.45% | 🟢 |
| NVIDIA | NVDA | $189 | $202 | +6.53% | 🟢 |
| Meta | META | $635 | $689 | +8.51% | 🟢 |
| Tesla | TSLA | $352 | $401 | +13.68% | 🟢 |
Korean Market Leaders
| Stock | Symbol | Mon Open (₩) | Fri Close (₩) | Weekly Change | Trend |
|---|---|---|---|---|---|
| Samsung Elec. | 005930 | ₩N/A | ₩216,000 | N/A | 🟡 |
| SK Hynix | 000660 | ₩N/A | ₩1,128,000 | N/A | 🟡 |
| Hyundai Motor | 005380 | ₩N/A | ₩538,000 | N/A | 🟡 |
Indices
| Index | Mon Open | Fri Close | Weekly Change | Trend |
|---|---|---|---|---|
| S&P 500 | 6,886.24 | 7,126.06 | +3.48% | 🟢 |
| Nasdaq | 23,183.74 | 24,468.48 | +5.54% | 🟢 |
| Dow Jones | 48,218.25 | 49,447.43 | +2.55% | 🟢 |
| KOSPI | 5,808.62 | 6,191.92 | +6.60% | 🟢 |
| KOSDAQ | 1,099.84 | 1,170.04 | +6.38% | 🟢 |
Currency (KRW/USD)
- Monday: ₩1,478
- Friday: ₩1,467
- Weekly Change: -0.75% (KRW strengthened — USD weaker)
- Impact: FX tailwind for USD investors in Korean equities.
U.S. 10-Year Treasury Yield
- Monday: 4.31%
- Friday: 4.32%
- Weekly Change: +1 bps
- Implication: Stable yields — no rate-driven equity repricing this week.
Weekly Trends and Themes
1. US Market Performance
S&P 500: +3.48% | Nasdaq: +5.54% | Dow: +2.55%
The S&P 500 advanced +3.48% for the week, with Nasdaq outperforming at +5.54%. The rally was broad-based, with tech and value names both participating.
Magnificent 7: 7 of 7 Mag7 stocks advanced. Best: Tesla (+13.68%), worst: Apple (+4.26%).
Takeaway: Strong institutional conviction — stay long quality tech.
2. Korean Market Performance
KOSPI: +6.60% | KOSDAQ: +6.38% (weekly)
KOSPI surged +6.60% — a strong weekly gain suggesting genuine institutional re-entry, not just short-covering.
KOSDAQ dramatically higher (+6.38%), underperforming KOSPI — investors preferring large-cap stability.
Takeaway: Strong week for Korean markets — partial position add appropriate.
3. Currency Impact (KRW/USD)
Weekly KRW Move: -0.75% ₩1,478 → ₩1,467
The won firmed slightly (-0.75%, ₩1,478 → ₩1,467) — a mild positive for USD investors.
Investor Implication: Minor FX tailwind; no action needed.
Export sector note: KRW strength compresses USD-reported revenues for Korean exporters — margin headwind for next quarter.
4. Treasury Yields
10Y: 4.31% → 4.32% (+1 bps)
The 10Y Treasury yield held steady at ~4.32% (+1 bps for the week) — no yield-driven repricing of equities.
Market Implication: Stable rates support growth stock multiples.
5. Key Weekly Observation
- Korea outperformed the US by 3.1pp this week — unusual divergence; watch for foreign net buying data to confirm institutional re-entry.
- Wide Mag7 dispersion this week (9.4pp between best and worst) — stock-pickers’ market; index-level moves understate individual name volatility.
Best and Worst Performers
Best (Weekly Upside Movers):
- Tesla: +13.68% ████████████████████
- Microsoft: +10.00% ███████████████████
- Meta: +8.51% █████████████████
- NVIDIA: +6.53% █████████████
- Alphabet: +6.34% ████████████
Worst (Weekly Declines):
- Alphabet: +6.34% ████████████
- Amazon: +4.45% ████████
- Apple: +4.26% ████████
Commentary:
Tesla was the standout winner at +13.68% — a weekly gain of this size reflects either strong earnings catalysts, analyst upgrades, or a short-covering squeeze. Verify whether the move is fundamental or technical before chasing.
All 7 tracked stocks advanced — unusually broad strength; likely a risk-on macro tailwind.
Weekly Review Compiled: April 18, 2026 at 12:40 PM Analysis Period: April 13 - 17, 2026 Data Sources: Daily market reports, Naver Finance, Yahoo Finance, FRED