They (the man?) are now looking into commodity based ETNs and ETFs with the intent to regulate or eliminate, I am sure. There was a halt in the natural gas ETF a few weeks ago as the sponsor could not get enough product to meet demand - thanks to extra-market forces.
I am not here to debate yea or nay. However, usually when a new ETF comes out it marks the peak in that particular market. It happened to steel. I cannot think where else on this nice Sunday afternoon but I know there are many other examples.
Anyway, if they (the men?) take these ETNs and ETFs away would that mark the bottom in the market?