What 125 years of data says about diversification and investing at record highs - MarketWatch
1. UBS investment yearbook shows 6.6% annual returns on U.S. stocks since 1900. 2. Volatility in markets is common; recovery from downturns varies significantly. 3. Cross-asset diversification remains effective for investors despite recent inflation spikes. 4. Investors are advised against frequent portfolio checks during uncertain times. 5. U.S. import tariffs are now in effect, causing potential profit pressures for companies.