Why your logical investment strategy is likely already priced into the market

Investing in obvious trends, like an aging population, rarely yields superior returns. This video explains why public information is already reflected in asset prices, making it nearly impossible for even professional investors to consistently outperform the market.

The efficient market hypothesis posits that asset prices incorporate all publicly available information. Because this data is accessible to all market participants, no individual or professional manager holds a sustainable advantage. When new information emerges, it is integrated into prices almost instantly, often randomly, leaving no room for reliable forecasting.

A historical example of this speed is the 1986 Challenger space shuttle crash. On January 28, 1986, stock prices for the shuttle's contractors dropped on the Dow Jones wire service within minutes of the news. In modern markets, this adjustment happens in seconds, rendering most stock tips obsolete before an investor can act.

Source: Can You Beat the Market?