I posted this dashboard here back in March, but with the recent investigations into insider trading by Kodak and the USPS Postmaster General I thought it was very relevant once again.

There are a lot of sites out there which list off every insider transaction. That’s good if you want to find more detail on a specific case of suspected insider trading, but it makes it difficult to quickly identify companies with suspicious activity.

Instead of displaying data at the transaction-level, I decided to aggregate transactions from a 6-month rolling period. I then created the “Insider Confidence Index”, which measures a company’s insider trading activity relative to their total market volume.

I also created a graph showing daily net purchases/sales across all S&P 500 insiders, to give an idea of the aggregate sentiment among insiders. It was interesting to see a huge spike in selling back in early February, and then again a couple of weeks ago.

I’d love to hear any thoughts or suggestions you have on how to improve this dashboard, and if you’d prefer to see the data at a transaction-level.