https://www.reuters.com/article/us-markets-retail-trading-reddit/costly-short-squeeze-makes-reddit-required-reading-on-wall-street-idUSKBN29W2AB >Dennis Dick, a professional stock trader in Las Vegas, reads the site Seeking Alpha before work and keeps up to the minute throughout the trading day by watching Twitter, but last weekend he also joined a group on the popular online discussion board Reddit "because I need to know what's going on."