As this Bloomberg report details, it seems that Financial Services companies are being hunted by many different regulators.
http://www.bloomberg.com/news/2013-07-16/barclays-traders-fined-487-9-million-by-u-s-regulator.html
Whilst this penalty has been imposed based upon trading history, it appears that the regulator used e-mail and IM to support its case. Most of us working in the eDiscovery space are used to seeing investigations into various messaging systems, this is typically the bulk of the data passed for review. In this case, there will be a lot of structured data to be retrieved from databases and archives to try to reconstruct the trading activity on this particular day and then to compare it against other daily activity to try to prove there was no statistical variation in trading patterns.
Innovative Development has been working with this type of structured data for many years. Building procedures and controls to handle database and archive extracts into our eDiscovery workflow is a key differentiator for our services.