Insider trading is hard to prove. To be convicted, a person must have bought or sold a stock based on material information that is both unknown to the general public and likely to have had an important effect on a company's stock price.
Volatility may be rising simply because investors must digest more information every day.
Information technology departments must spend enormous amounts of time and money worrying about integrating big computer systems with billions of pieces of customer data.
Big companies, which spend tens of billions of dollars annually on 'call centers' to take orders and provide customer support, increasingly rely on speech recognition not just to handle requests for information but to process customer orders.
For years, critics of Fannie Mae have warned that it does not give them enough information to judge its risks.
The market always, in theory at least, looks ahead. And it's always trying to take in every bit of information that it can as quickly as it can. You don't really care so much if the company made a dollar last year; you want to know what it's going to make this year.