Robinhood Markets Inc. (NASDAQ:HOOD) reported a twofold surge in cryptocurrency volumes in the third quarter. What Happened: The company released its financials after Wednesday’s closing bell and revealed a cryptocurrency notional trading volume of $14.4 billion, up 112% from last year. Jason Warnick, Chief Financial Officer, said during the earnings call that notional volumes passed the $5 billion mark in October alone, and was set to surpass the third-quarter monthly average. The surge in volumes helped power cryptocurrency-related revenue to $61 million, up 165% year-over-year. The total qu…