Anecdote time: an NLP specialist I once worked with told me about some research he did into determining the "goodness" or "badness" of press releases and SEC fi

Anecdote time: an NLP specialist I once worked with told me about some research he did into determining the "goodness" or "badness" of press releases and SEC filings. Buy on good news, sell on bad news, hopefully fast enough to beat others to it. After a great deal of crunching and study he said they did come up with a model that could do it reasonably well. Then realised it could be replaced with a simple rule: Are there a bunch of numbers at the top? Good news. Are the numbers buried way down? Bad news. Another simple rule, by the way, is timing vs executive compensation events. If there's an announcement just before a big block of options or RSUs are vesting, then it's good likely to be good news. If it's being posted far away from vesting dates, then it's likely to be bad news.