Can someone explain what Horizons, BetaPro S&P 500 VIX Short-Term Futures™ 2X Daily Bull ETF, symbol (HVU) does?

From my understanding it's and ETF that trades on the volatility of the market. How does that work? What assets do they hold ? Can you explain how to trade something like this ?

Submitted April 17, 2018 at 03:57PM by bdog66656 https://ift.tt/2qE6yID