Strategy. The Fund employs a passive management or indexing investment approach designed to track the performance of the Index. The Fund generally expects to invest in investments whose risk, return, and other characteristics resemble the risk, return, and other characteristics of the constituents of the Index or the Index as a whole. The Fund also may invest in a sample of the constituents of the Index whose risk, return, and other characteristics resemble those of the Index as a whole. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in investments that provide the Fund with equity exposure, including equity securities, derivative instruments that provide exposure to equity securities or … Show more… The Fund employs a passive management or indexing investment approach designed to track the performance of the Index. The Fund generally expects to invest in investments whose risk, return, and other characteristics resemble the risk, return, and other characteristics of the constituents of the Index or the Index as a whole. The Fund also may invest in a sample of the constituents of the Index whose risk, return, and other characteristics resemble those of the Index as a whole. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in investments that provide the Fund with equity exposure, including equity securities, derivative instruments that provide exposure to equity securities or equity indices, as well as other instruments that in combination have economic characteristics similar or equivalent to those of equity securities. The Index is provided by Volos Portfolio Solutions, Inc. (Volos or the Index Provider). The Index tracks the value of a cash-secured ( i.e. , collateralized) put option sales strategy, which consists of (1) selling (or writing) put options on the SPDR S&P 500 ETF Trust (SPY) (the SPY Puts) and (2) a cash collateral account that accrues interest at a theoretical three-month Treasury bill rate on a daily basis. SPY Puts are derivative instruments that typically rise in value when the price of SPY falls because SPY Puts are options to sell SPY at a designated strike price. All SPY Puts are exchange-listed standardized options. The Indexs put option sales strategy is designed to generate income when SPY exhibits neutral to positive performance with low volatility, as such performance is expected to decrease the hypothetical price of the sold SPY Puts. The Index selects SPY Puts that target a premium of 2.5% ( i.e., the SPY Put costs approximately 2.5% of the official daily price of SPY). At any given time, the Index references two SPY Puts with expiration dates that are two weeks apart. In seeking to track the price and yield performance, before fees and expenses, of the Index, the Fund expects to sell put options on the S&P 500 Index (Index Options) and hold U.S. Treasury bills. The Fund also may use SPY Puts and any other call or put option or futures contracts WisdomTree Asset Management, Inc. (WisdomTree Asset Management or the Adviser) or Newton Investment Management North America, LLC (NIMNA or the Sub-Adviser) believes will enable the Fund to implement its investment strategy and achieve its investment objective. By selling an Index Option, the Fund receives a premium from the option buyer. The premium will increase the Funds return if the sold Index Option has decreased in price on the Roll Date (as defined in the next paragraph) relative to the premium received by the Fund from writing the Index Option. The Index Option will decrease in price if the S&P 500 Index experiences positive performance because the Index Option is more valuable when the value of the S&P 500 Index decreases and/or experiences high volatility. If, however, the price of the sold Index Option increases compared to the price of the Index Option when written by the Fund ( e.g. , in response to the S&P 500 Index decreasing in value and/or experiencing high volatility), the Fund pays the buyer the difference between the Index Option price on the Roll Date and the Index Option price when written by the Fund. The Funds sale of cash-secured Index Options serves to partially offset a decline in the value of the S&P 500 Index to the extent of the premiums received. However, if the value of the S&P 500 Index increases beyond the premiums received, Fund returns would not be expected to increase accordingly. The Funds potential return is limited to the amount of the option premiums it receives. The Index Options sold by the Fund are selected to target a premium of 2.5% ( i.e. , the cash received by the Fund from the buyer of the Index Option is approximately 2.5% of the daily value of the S&P 500 Index). At any given time, the Fund holds at least two Index Options (or other investments designed to achieve the same effect) with different expiration dates. The Fund generally closes out the Index Options prior to their expiration dates, and newly selected Index Options are sold by the Fund on the same day (the Roll Date) in a process known as rolling. Rolling refers to the practice of closing out one options position and opening another with a different expiration date and/or a different strike price. When an Index Option is closed out by the Fund on the Roll Date, the Fund generally selects a new Index Option with a target expiration date in the following month. Each new Index Option will also have a strike price that is the higher of (i) the at the money strike price ( i.e. , a strike price that is closest to but greater than the current market value of the S&P 500 Index), or (ii) the strike price for an Index Option that has a premium closest to 2.5%. By following the Indexs put option sales strategy, as described above, the Fund expects to operate in a manner similar to, and subject to the same risks as, the Index. The number of Index Options sold by the Fund varies but is limited by the amount held by the Fund in U.S. Treasury bills. At each Roll Date, any settlement from the existing Index Options is paid from the U.S. Treasury bills investment proceeds and new Index Options are sold. The revenue from their sale is added to the Funds U.S. Treasury bills account. The Fund is managed in a way that seeks, under normal circumstances, to provide monthly distributions at a relatively stable level. Show less