Yuval Rosenberg
Volatility is a measure of certainty in the market. When investors, in aggregate, have a good handle on what a particular stock or basket of stocks is worth, the price won't fluctuate much and volatility is low.
On the other hand, when the value of stocks is clouded, investors will buy and sell at a much larger range of prices and volatility is high
buyer and seller are close to each other: 没有矛盾!
The new ETNs, the iPath S&P 500 VIX Short-Term Futures ETN (VXX) and iPath S&P 500 VIX Mid-Term Futures ETN (VXZ),