(Excerpt from The Psychology of Money by Morgan Housel)
Benjamin Graham is known as one of the greatest investors of all time, the father of value investing and the early mentor of Warren Buffett. But the majority of Benjamin Graham’s investing success was due to owning an enormous chunk of GEICO stock which, by his own admission, broke nearly every diversification rule that Graham himself laid out in his famous texts. Where does the thin line between bold and reckless fall here? I don’t know. Graham wrote about his GEICO bonanza: “One lucky break, or one supremely shrewd decision—can we tell them apart?” Not easily.