‘TWTRQ’ stock up as much as 1,800% as investors confuse Tweeter for Twitter

Previous post: https://news.ycombinator.com/item?id=6497250

Previous discussion: https://news.ycombinator.com/item?id=6498983

They programmed the HFT bot with a regex /^TWTR/ and forgot the trailing $...

Talk about the "invisible hand" of the market. ROTFL