Invesco QQQ Trust seeks investment results that generally correspond to the price and yield performance of the NASDAQ-100 Index. To maintain the correspondence between the composition and weights of the securities in the trust (the "securities") and the stocks in the NASDAQ-100 Index, the adviser adjusts the securities from time to time to conform to periodic changes in the identity and/or relative weights of index securities. The composition and weighting of the securities portion of a portfolio deposit are also adjusted to conform to changes in the index.

iShares Russell 2000 ETF seeks to track the investment results of the Russell 2000 Index, which measures the performance of the small-capitalization sector of the U.S. equity market. The fund generally invests at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its underlying index (i.e., depositary receipts representing securities of the underlying index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents.

iPath Series B S&P 500 VIX Short-Term Futures ETN seeks return linked to the performance of the S&P 500 VIX Short-Term Futures Index TR. The ETN offers exposure to futures contracts of specified maturities on the VIX index and not direct exposure to the VIX index or its spot level. The index is designed to provide investors with exposure to one or more maturities of futures contracts on the CBOE Volatility Index.