From the very starting, observers speculated BITO and different futures-based ETFs would considerably underperform bitcoin because of prices related to rolling over, or promoting expiring futures contracts and shopping for the following set. Often, longer-dated futures contracts commerce at a premium to these nearer to expiry, a situation often called contango. The contango tends to steepen throughout bull runs, and the steeper the contango, the upper the prices, and the so-called contango bleed.
