Core Viewpoint - The article discusses the fundamental differences in risk perception between Wall Street and value investors, emphasizing that these differences lead to distinct investment strategies and outcomes [2][3]. Group 1: Definitions of Risk - Wall Street defines risk as the relative volatility of a stock or portfolio, often measured by beta, which focuses on historical price fluctuations [10][21]. - Value investors, on the other hand, view risk as the potential loss of principal and related returns, emphasizing the importance of understanding a business's intrinsic value and economic characteristics [9][10]. Group 2: Practical Risk Assessment - Value investing involves analyzing the inherent risks of a business, including financial leverage and the investor's ability to understand the business's economic features [13][14]. - Buffett's five-factor method for assessing risk includes evaluating the long-term economic characteristics of a business, the management's capabilities, and the business's purchase price relative to its intrinsic value [14][15][16]. Group 3: Comparison of Investment Philosophies - Value investors focus on the underlying business and its long-term competitive advantages, while Wall Street investors often prioritize short-term price movements and statistical measures [22][23]. - The article highlights that value investors prefer concentrated investments in a few well-understood businesses, whereas Wall Street advocates for diversification to mitigate risk [27][28]. Group 4: Conclusion - The article concludes that the differing definitions and approaches to risk between Wall Street and value investors lead to fundamentally different investment strategies, with value investors more likely to achieve long-term success by focusing on a few high-quality businesses [32][33].