Key Types and Real-World Examples

What Is Investment Philosophy?

An investment philosophy is the approach an investor takes to investing and is based on a set of principles, beliefs, experiences, and investment profile. It drives trading and portfolio decisions. Value and growth investing are two widely-used and contrasting investment philosophies. Famous investors, including Warren Buffett and George Soros, are known for their trademark investment philosophies.

Exploring Different Investment Philosophies

Investment philosophies should reflect an investor’s goals, timeline, risk tolerance, and capital needs. Following are common investment philosophies:

• Value investing involves buying stocks that an investor believes are underpriced on the expectation they will rise significantly.
• Fundamental analysis relies on identifying companies with strong earnings prospects.
• Growth investing is where investors buy shares of newer companies that are generating above-average sales and earnings growth, in hopes of rising stock prices.
• Socially responsible investing (SRI), focuses on investing in companies whose practices align with an investor’s values as they pertain to the company’s impact on society and the environment. SRI is sometimes known as ESG investing.
• Technical analysis relies on the examination of past market data to uncover hallmark visual patterns in trading activity on which to base buy and sell decisions.
• Contrarian investing, as the name implies, goes in the opposite direction of the crowd. Swimming against the current, these investors assume the market is usually wrong at both its extreme lows and highs, selling into rallies and buying when markets tumble.

Investment philosophies define people or firms that manage money. Successful investors often refine their investment philosophies over time and stick to them despite market changes.

Notable Examples of Investment Philosophies in Action

Warren Buffett’s Mastery of Value Investing

Warren Buffett has practiced a value investment philosophy since studying under legendary value investor Benjamin Graham at Columbia University in the early 1950s. Similarly, proponents of socially responsible investing are likely to remain steadfast in their avoidance of companies whose activities they disfavor—such as firearms production or gambling—even when fundamentals or technical factors are favoring those companies’ stocks.

George Soros: A Strategic Momentum Investor

George Soros is a well-known short-term speculator who often makes massive, highly leveraged bets on the direction of the financial markets. He is known for using a global macro strategy, a philosophy centered around making large, one-way bets on the movements of currency rates, commodity prices, stocks, bonds, derivatives, and other assets based on macroeconomic analysis. George Soros is unique among highly successful investors in admitting that instinct plays a large role in his investment decisions.

John Paulson’s Contrarian Investing Success

Hedge fund manager John Paulson reached fame during the credit crisis for a spectacular bet against the U.S. housing market. His timely bet earned Paulson & Co. about $15 billion during the crisis. He quickly switched gears in 2009 as markets were selling off hard to bet on a subsequent recovery and established a multi-billion dollar position in Bank of America (BAC) as well as an approximately two million share position in Goldman Sachs. He also bet big on gold at the time and invested heavily in Citigroup (C), JP Morgan Chase (JPM), and a handful of other financial institutions.

The Bottom Line

A clearly defined investment philosophy is vital to guiding investment decisions. Value investing, growth investing, socially responsible investing, and contrarian investing are well-known investment philosophies. Investors such as Warren Buffett, George Soros, and John Paulson have each achieved investing success through their distinct investment philosophies.

Determined investors usually don’t abandon an investment philosophy when faced with short-term market fluctuations. However, an investor’s investment philosophy can change over time, as they adapt it to individual, learning experiences and market changes.

To develop your own investment philosophy, be sure to account for your investment goals, financial needs, and investment profile (including risk tolerance and investing time horizon).