The rush on shares by individual investors, into struggling US video game store chain Gamestop was portrayed as an attempt by a new breed of retail investors to thwart hedge funds which were shorting the stock. Some investors won big, others lost everything and one hedge fund, Melvin Capital, lost half of its $13bn fund. Was this really a David and Goliath fight, signalling a win for retail stock pickers, collaborating on social media platforms like Reddit? And has it changed the future of investing? Evan Davis and guests discuss.

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