"The trade occurred 19 seconds before the tweet, and one second after a headline appeared on the Dow Jones Newswire." I don't understand the mystery here. It would be trivial to write a bot that could interpret a headline and make a trade on it in under a second, and that's without any special high-speed links. With API documentation for a brokerage house, I could write such a bot in probably half a day. Given the as…
Come to think about it, such a system, with an API, would be really nice to have. Something that allows anyone to create a trading bot and see how it performs. Any one what to make one? :)