I'm not the biggest Jim Cramer fan but he ran a successful hedge fund and has been in the industry for 20 years. He is an expert and knows what he's talking about and is pretty knowledgeable about the US cash equities markets.

Part of the inverse Kramer ETF's success is that if you run a hedge fund you can make bank on 20 positions over a year or two.

If you are on TV every night you need a new "winner" 5 times a week, which just isn't possible.