"...What Rate of Return Should You Expect To Earn On Your Retirement Investments over the next ten years? The higher this market goes, the lower the following ten year period will be according to historical and mathematical statistics. Every calendar quarter BlackRock publishes capital market assumptions about a wide range of asset classes. In its most recent forecast, BlackRock expects annualized gains for the next ten years of …are you ready? ….5.9% for U.S. stocks and 3.1% for U.S. bonds.