Why America’s aging population will be a problem for stocks — and your retirement - MarketWatch

1. Stock valuations in developed markets may peak within the next decade. 2. The aging population affects long-term stock trends and investment strategies. 3. The M/O ratio predicts long-term stock market cycles, including S&P 500 movements. 4. Demographic trends suggest reducing U.S. equity exposure in retirement planning. 5. Emerging markets may offer better long-term growth potential than U.S. equities.