PKW debuted in late 2006 and has grown to $2.74 billion in assets under management with a significant portion of those assets coming into the ETF in just the past year. Over the past 12 months, PKW has attracted $2.2 billion in new assets, making it the third-best PowerShares ETF on the basis of inflows. Year-to-date, the ETF has raked in $265.1 million, making it the second-best PowerShares ETF by inflows.

In the six-year period ending 2013, PKW outperformed the S&P 500 five times with 2012 being the outlier. Over the past three years, PKW is up almost 68% compared to 47.2% for the S&P 500.

PowerShares Buyback Achievers Portfolio

ETF Trends editorial team contributed to this post.