powayseller, The inverse Rydex funds that track the major indices (e.g SP500 & NASDAQ) do *very* well in matching their performance. I’ve included two graphs that should illustrate the point. They remind me of inverse function graphs from math class. I’ve included a popular ETF as well (SPY & QQQQ) for each chart.
As for ProFunds, I believe I may have made a blanket statement regarding them 🙂 as I do not use them nor have the relevant data at hand to confirm or deny your bloggers experience.
As for Weiss, I’m not saying their data is flawed, in fact it looks like a great service. But, directly comparing their A+ to E- isn’t fair, since the bond funds differed by investment objective/timeframe.
