What is Market Timing?
Market timing is the attempt to predict future market movements and make buy or sell decisions accordingly. Timers try to exit before downturns and re-enter before recoveries. While the concept is appealing, decades of research show that consistently timing the market is nearly impossible, even for professional fund managers. A study by Dalbar found that the average investor earned roughly half the S&P 500's return over 20 years, largely due to poor timing decisions.
Why Market Timing Fails
The biggest gains often occur in short, unpredictable bursts. Missing just the 10 best days in the S&P 500 over a 20-year period can cut total returns by more than half. These best days frequently occur during or immediately after the worst periods, meaning investors who exit during crashes miss the recovery. To succeed at market timing, you must be right twice: when to sell and when to buy back.
Key Considerations
Instead of timing the market, most evidence supports a buy-and-hold approach with regular contributions. Dollar-cost averaging provides a systematic alternative that removes the need for prediction. If you feel compelled to adjust exposure, tactical allocation shifts of 5-10% are far less risky than moving entirely to cash.