Stock price when the opinion was issued
This is betting on 2X volatility, but volatility is volatile enough. This is a gamble, not investing. Even if you are correct in terms of the direction of the trade, you can still lose money because of the effect of leveraging and prices being changed every day. These things should only be held for 2-3 days at most.
Market Breakdown. SPY with Bollinger bands says if it fails in testing support today it will correct. He believes individual investors should not consider this since it is double leveraged. He would prefer a single inverse to the market.