Our extensive research has shown that imitating the smart money can generate significant returns for retail investors, which is why we track nearly 900 active prominent money managers and analyze their quarterly 13F filings. The stocks that are heavily bought by hedge funds historically outperformed the market, though there is no shortage of high profile failures like hedge funds' 2018 losses in Facebook and Apple. Let’s take a closer look at what the funds we track think about MacroGenics Inc (NASDAQ:MGNX) in this article. Is MGNX stock a buy? Prominent investors were turning less bullish.