Group 1 - The stock market was the primary driver of wealth in 2025, with the value of corporate equities and mutual fund shares held by the top 10% rising from $39 trillion to $44 trillion [1] - The concentration of stock ownership is significant, with the top 1% owning 50.2% of all U.S. corporate equities and mutual fund shares as of Q3 2025 [1] - Historically, stocks have outperformed fixed-income assets, with an average annual return of 10.9% for U.S. and Canadian equities from 1920 to 2019, compared to 4.9% for bonds [4] Group 2 - The most effective investment strategy for average investors includes long-term thinking, broad diversification, and goal-oriented planning [5] - The S&P 500 index fund has outperformed most major university endowment funds, with an average annual return of 13.7% from 2016 to 2025, compared to 9.2% for top Ivy League endowment funds [5]