Gross Bill

TWM: An ETF Arbitrage Opportunity

< A common misconception is that ProShares should also provide 200%, -200% or -100% of index performance over longer periods, such as a week, month or year. However, ProShares' returns may be greater than—or less than—what you’d expect over longer periods. >

Apparently you have never read any of Proshares material regarding their ETFs. Shocker...