» Carson Block suggests some hedge funds may have piled into GameStop last week to squeeze short-sellers - and says markets are 'broken' Carson Block suggests some hedge funds may have piled into GameStop last week to squeeze short-sellers - and says markets are 'broken' Harry RobertsonFeb 2, 2021, 22:57 IST Short-seller Carson Block is the founder of Muddy Waters ResearchBrendan McDermid/Reuters Investor Carson Block suggested there may have been hedge fund "coordination" over GameStop. He said hedge funds had been known to squeeze short-sellers, such as his own firm Muddy Waters. Block also said that " markets are broken" thanks to too much credit and leverage.