Just look at the oil and gas small cap sector with $ 200 billion in high yield debt to see where the metals may be headed. (discoveryinvesting.com)
Many, many small business fail because they are concentrated small cap sector bets, in essence, highly sensitive to management quality, local economic conditions, etc.. (greaterfool.ca)
PowerShares released a series of small cap sector funds in 2010, but these were shut down due to lack of interest. (swanglobalinvestments.com)