John Clifton "Jack" Bogle (May 8, 1929 – January 16, 2019) was an American investor, business magnate, and philanthropist. He founded The Vanguard Group in 1975 and created the first index mutual fund available to individual investors, revolutionizing the investment industry. Bogle is credited with pioneering low-cost investing and championing the rights of individual investors against Wall Street's high fees....
"The market exists to serve you, not to guide you. Use market prices to your advantage — buy when the market offers bargains and sell when it offers premiums."
Use the market as your servant, not your guide.
Read Full Analysis →"Markets move in cycles driven by human emotion. Understanding where you are in the cycle helps you prepare for what comes next and position accordingly."
Understand where you are in the market cycle.
Read Full Analysis →"In the short run, the market is a voting machine; in the long run, it's a weighing machine. Prices can diverge wildly from value, but eventually converge."
Prices diverge from value short-term but converge long-term.
Read Full Analysis →John Bogle has 3 key principles on margin of safety. The most important one is "Market as Your Servant" — The market exists to serve you, not to guide you.
John Bogle applies margin of safety through several key principles including "Market as Your Servant" and "Market Cycles Awareness". These principles guide practical investment decisions and have been tested across decades of market cycles.
John Bogle's approach to margin of safety is distinguished by a focus on long-term thinking and fundamental analysis. With 3 specific principles in this area, John Bogle provides a comprehensive framework that investors at any level can study and apply to improve their decision-making.
