Benjamin Graham, the father of value investing (and Warren Buffett's mentor), was famed for his approach to finding bargain stocks. By investing in companies whose intrinsic value was far higher than what they were trading at, he ensures he would make a profit regardless of the day-to-day operations of the business. Berkshire Hathaway was once such a business, which, although being a struggling textile manufacturer, had assets valuing it higher than its price in the case of a liquidation.
Warren Buffett may not follow Graham's strategy today (with him instead preferring "wonderful businesses trading