Investing
Rule of 110
The rule of 110 suggests putting a percentage equal to 110 minus your age into stocks, and the rest into bonds.
Formula: Stock allocation (%) = 110 − age
It's a starting heuristic that reflects how time horizon shrinks with age, and with it the ability to recover from a downturn.
It should be adjusted for income stability, available net worth and psychological tolerance; it doesn't replace a full risk-profile assessment.