Earthquake, tsunami, and nuclear meltdown rattle global markets
A magnitude-9.0 earthquake and tsunami struck Japan, triggering a nuclear meltdown at Fukushima Daiichi. The Nikkei plunged roughly 17% in 4 trading days including a 10.6% single-day drop. The S&P 500 fell approximately 6.5% peak-to-trough over four weeks, then recovered to new highs by late April.
ALAN INTELLIGENCE
ALAN INTELLIGENCE · alanglobalintelligence.com
ALAN IntelligenceData as of 2026-08-30
Bars: median S&P 500 forward return. Whiskers: 25th-75th percentile. n = 1 occurrences.
Based on 1 historical occurrences. Last triggered: 2011-03-11.
Past performance is not indicative of future results. This material is for informational and educational purposes only and does not constitute investment advice, an offer to buy or sell any security, or a recommendation. Data from publicly available sources believed to be reliable but not guaranteed. All investments involve risk, including possible loss of principal.
alanglobalintelligence.com
ALAN GLOBAL INTELLIGENCE · alanglobalintelligence.comSource: S&P 500 daily closes · Generated 2026-08-30
Historical occurrencesshowing 1 of 1
Date
1M return
1Y return
5Y return
2011-03-11
+1.6%
+5.1%
+54.6%
What history says
Editorial commentary written by ALAN analysts. Figures cited below are analyst-authored context — they are not derived from the chart above and may reflect different windows or sources.
The US market impact was modest and temporary
The S&P 500 declined 6.5% and fully recovered within six weeks. The damage was overwhelmingly concentrated in Japanese equities.
Supply chain fears exceeded supply chain reality
Auto and semiconductor supply chains were disrupted for weeks, but global production rerouted faster than feared.
Natural disasters rarely derail US equity cycles
Even the most devastating natural disaster in modern Japanese history produced only a modest, temporary pullback in US equities.
For your portfolio
A disaster's market damage concentrates near its epicenter — Japanese equities bore the losses while the US index round-tripped in about six weeks. If the event highlights anything for your portfolio, it is single-country concentration and supply-chain-dependent positions, both better reviewed calmly than sold into the initial gap down.
For information and research only. Not investment advice. ALAN does not place trades or execute orders. Figures come from the sources shown and can lag the market; verify independently before making decisions. Past performance is not predictive of future results.
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ALAN is not a broker-dealer or investment advisor. All data is informational only and does not constitute investment advice. Past performance does not guarantee future results.