In the stock market, the most dangerous of all emotions is greed, but fear is a close second.

Ken Fisher

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Ken Fisher

Born in 1950 in California, Kenneth Fisher is the founder and executive chairman of Fisher Investments. Building on the growth-stock lineage of his father Philip Fisher while adding a distinctive behavioral-finance perspective, he wrote the longest-running column in Forbes magazine history — thirty-three years of 'Portfolio Strategy.' An author of eleven books, he is both a practitioner and the investment industry's preeminent communicator, with an estimated net worth of roughly $13.2 billion as of January 2026.

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