That was another attempt at an utterly pathetic theory in that by implying buying 100 shares of QID one could be short and potentialy lose $4300 at Fridays prevailing close @$43.00/100shrs.
With QID: The investment seeks daily investment results, before fees and expenses, that correspond to twice the inverse of the daily performance of the NASDAQ 100 Index. The fund will normally take positions in financial instruments (including derivatives) have similar daily return characteristics as twice the inverse performance of the NASDAQ 100 index. It will not SELL SHORT the individual equity securities of issuers contained in the NASDAQ 100 Index. The fund will employ leveraged investment techniques to achieve the objective. It is nondiversified.