The document summarizes private equity exit activity in 2011 and 2012 trends. It found that 420 US companies were exited in 2011 through sales or IPOs totaling $104 billion, similar to 2010 levels. While exit levels remain strong, the growing gap between investment and exits is concerning as it indicates portfolio companies are being held longer. Secondary buyouts could help address the growing inventory of companies by shortening hold periods. The report aims to analyze industry-level data to better understand which sectors may see more exits or hold periods lengthen further.