Investor Corner/Building and judging a portfolio/Portfolio Construction & Behaviour
3.1.12 Market Timing
Market timing means trying to buy at the bottom and sell at the top. It is extremely difficult to execute consistently, and most investors who attempt it end up underperforming a simple buy-and-hold approach.
Why timing is harder than it appears
Successful market timing requires being right twice: correctly identifying when to exit before a decline, and then correctly identifying when to re-enter before the subsequent recovery. Being wrong on either call, entering too late, exiting too early, or missing the recovery entirely while waiting for more confidence, can easily erase whatever benefit a single correct call might have delivered.
The cost of missing just a few days
A large share of a market's total long-run gain has historically been concentrated in a relatively small number of its best days, and those best days often cluster very close to the market's worst days, making them exceptionally hard to predict and time around. Missing even a handful of those specific days, often while sitting in cash waiting for more certainty, can meaningfully drag down long-run returns.
The practical alternative
Rather than attempting to time entries and exits, most successful long-term investors focus on staying invested through both good and bad periods, using asset allocation and rebalancing to manage risk instead of trying to predict short-term market direction.
How PriLytics helps. PriLytics shows your portfolio's value over time against your total invested amount, making the cost of any past attempt to time the market visible in your own history. See performance over time.