Key Facts
• Summer bonus season encourages many to consider starting investments.
• Investing the entire bonus at once poses significant risks, especially for beginners.
• The 2025 “Trump Tariff Shock” highlighted the dangers of market volatility.
• “Losing-proof investment” involves selecting the right mutual funds, long-term commitment, and regular contributions.
• Recommended mutual funds include those tracking the S&P 500, global diversified funds, and developed market funds.
• Dollar-cost averaging reduces risks by spreading investments over time.
• A simulation showed a 10.76% return despite a 50% drop in fund prices.
• Long-term, diversified, and consistent investments have a near 100% success rate over 20 years, per Japan’s Financial Services Agency.
• Key strategies: avoid lump-sum investments, maintain reserves for market dips, and focus on long-term growth.
Summary
Investing your summer bonus in one go is risky, particularly for beginners. Historical events like the 2025 “Trump Tariff Shock” demonstrate the potential for financial and emotional losses. Experts recommend a “losing-proof investment” strategy: choose reliable mutual funds (e.g., S&P 500 trackers), invest consistently over time, and avoid lump-sum contributions. Dollar-cost averaging helps mitigate risks by balancing purchase prices. A simulation revealed a 10.76% return even when fund prices halved. Long-term, diversified, and consistent investments, supported by data from Japan’s Financial Services Agency, show near-certain success over 20 years. To maximize returns, maintain reserves for market downturns and focus on steady growth. Start your journey to financial stability with these proven methods.
