No longer a safe haven for the average investor? Never really was. By all means common investors should stay clear of ETNs, and perhaps now ETFs.
'Since 2008, trading volumes of the five-largest credit ETFs have grown 75-fold, according to a Greenwich Associates study released Monday. About 12 percent of institutions surveyed by the Connecticut-based research firm reported having traded ETFs in increments of more than $100 million, according to the report' - From Bloomberg -http://www.bloomberg.com/news/articles/2015-05-18/a-200-million-hedge-fund-trade-in-your-bond-etf-is-normal-now