According to Bloomberg, in the week ended January 14 S&P 500 insiders sold $163 million worth of stock in 54 separate transactions. They bought exactly $0. That's right, in the last week, there was no insider purchasing. This is the first time in years (and possibly for ever) in which we have seen a week during which there was not one purchase by an insider. Surely, there is no need to comment on this result.

Source: Bloomberg