📊 THIS WEEK’S SNAPSHOT — May, Week 2
| 【Japan】Nikkei 225 (5/8 close) | 62,713 ▲ Biggest single-day gain ever on 5/7 (+5.58%) |
| 【US】S&P 500 (5/8 close) | 7,398 ▲ All-time high close |
| 【US】Nasdaq (5/8 close) | 29,234 ▲ Record high |
| 💱 USD/JPY (weekly) | Upper 156 range Intervention signals observed |
| 😨 Fear & Greed Index | 67 （Greed） |
This week, geopolitical expectations drove markets in a big way.
U.S.-Iran ceasefire talks pushed Japan’s Nikkei to its biggest single-day gain on record, while the S&P 500 closed at a new all-time high of 7,398 on Friday. A strong week for long-term investors on both sides of the Pacific.
As someone with 30 years on the front lines of Japanese banking, I’ve seen this pattern before — sharp rallies driven by headline optimism can reverse just as fast. The numbers are exciting, but the underlying risks deserve a close look.
【Japan】 Equities: A Historic Single-Day Surge
Nikkei breaks 63,000 for the first time in history
This week, Japan’s stock market delivered one of its most dramatic moments in recent memory.
Intraday high: 63,091 — the first time ever above 63,000, and the largest single-day gain on record
The catalyst was a wave of optimism around U.S.-Iran ceasefire talks. As hopes of a peace deal grew, oil prices fell sharply and global risk appetite surged. Japanese markets had been closed for the Golden Week holiday and opened to a dramatically changed backdrop, absorbing several days of overseas moves in a single session.
Rather than a single-day explosion, this was the market catching up with 4 days of holiday-period gains all at once — important context for interpreting the size of the move.
AI and semiconductor-related stocks led the rally. SoftBank Group and Arm Holdings — whose earnings outlook exceeded forecasts — were among the standout performers.
On Friday May 8th, the market eased back to close at 62,713, with AI and chip-related names continuing to attract buyers.
【US】 Markets: Record Highs Amid Geopolitical Uncertainty
S&P 500 closes at 7,398 — a new all-time high
The U.S. market had a volatile but ultimately strong week, driven by the Iran ceasefire narrative.
📅 May 4 (Mon): S&P 500 extends record run as oil prices ease
📅 May 5 (Tue): Trump announces ceasefire progress → S&P 500 at 7,259, new record
📅 May 6 (Wed): Ceasefire deal seen as imminent → S&P 500 surges +1.46% to 7,365, Dow +612pts
📅 May 7 (Thu): Iranian officials push back → S&P 500 pulls back ▲0.38% to 7,337
📅 May 8 (Fri): Strong April jobs report boosts sentiment → S&P 500 closes at all-time high of 7,398, Nasdaq at 29,234
Up on ceasefire hopes, down on doubts, then back up on strong jobs data — a classic headline-driven week. The key takeaway: despite mid-week volatility, the market ended at a record high.
Investor Sentiment: Fear & Greed Index
The CNN Fear & Greed Index stands at 67 (Greed).
This kind of rapid reversal is worth noting. As we approach “Extreme Greed” territory, short-term pullback risk rises. For long-term investors, moments like this are a good time to check your portfolio is still aligned with your goals — not a reason to panic, but not a reason to get complacent either.
💱 FX: Yen Pressure Continues, BOJ Intervention Observed
The USD/JPY pair traded in the upper 156 yen range this week, with the Japanese government and Bank of Japan appearing to intervene at points to slow the yen’s decline.
📈 USD/JPY centered in the upper 156 yen range throughout the week
🏦 Nomura Securities raised its end-2026 USD/JPY forecast to 152.5 yen
During my 10 years working overseas, I came to understand that currencies are one of the hardest things to predict in the short term. For Japanese investors holding U.S. assets, currency swings are best treated not as a risk to fear, but as a natural part of global diversification.
🧭 Long-Term View: Stay Invested, Stay Disciplined
This was a week that rewarded those who stayed invested — but also showed how quickly the narrative can flip. Anyone who tried to trade around the Iran headlines likely got whipsawed by Thursday’s reversal, only to miss Friday’s record close.
The real lesson for investors in their 40s and 50s: the noise of any single week matters far less than the discipline of staying in the market. Headlines change. Your long-term plan shouldn’t.
Full Japanese version:日経平均が過去最大の急騰、S&P500も最高値7,398｜今週の資産形成ニュース（5月第2週） – 50代リアルマネー｜金融30年×資産1億
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