Despite opening strong, Robinhood (NASDAQ:HOOD) stock has dipped just slightly into the red this morning. Yesterday, after the market closed, the securities broker reported stronger-than-expected second-quarter results. So, this morning’s negative sentiments aside, here are five reasons for HOOD stock owners to feel bullish about the company’s Q2 performance:The firm’s top and bottom lines came in meaningfully above analysts’ average estimates. Specifically, it generated Q2 revenue of $682 million, versus a ...