TDG). As mentioned above this ETF has been eagerly awaited, but this is a tricky niche of the fixed income market. The financial crisis did a great job of exposing volatility characteristics of many segments, including the senior loan space. One model for this space is the Invesco Van Kampen Sr Loan Fund ( VSLAX). The fund has more than $1 billion in assets under management and got crushed in 2008, dropping about as much as the S&P 500, with a 47% decline at its low. Additionally, I would note that the ETF structure creates the potential for the market price of the fund to deviate from the fund's intraday indicative value during periods of extreme market behavior. This was the case with many bond ETFs during the immediate aftermath of Lehman Brothers' collapse. This potential exists because the ETF is more liquid than the holdings within it. This is a normal market function, but finding out about this risk as it is happening in real time is a situation most people would want to avoid.