When Anne Hathaway makes headlines, the stock for Warren Buffett’s Berkshire-Hathaway goes up. Think of Berkshire-Hathaway shares (BRK.A) as a really expensive version of the IMDb’s StarMeter (which actually is designed to go up and down as actors make the news)… My guess is that all those automated, robotic trading programming are picking up the same chatter on the internet about “Hathaway” as the IMDb’s StarMeter, and they’re applying it to the stock market.