Strategy. Under normal market conditions, the Fund seeks to meet its investment objective by investing primarily in equity securities, including common stocks, preferred stocks, related depository receipts ( i.e., American Depository Receipts or ADRs, European Depository Receipts or EDRs, and Global Depository Receipts or GDRs) and real estate investment trusts (REITs). The Fund invests predominantly in common stocks. The Funds investments are the responsibility of the Adviser and the Funds sub-adviser, Tidal Investments, LLC (the Sub-Adviser). The Adviser, working together with the Sub-Adviser, makes buy, hold and sell decisions with respect to Fund portfolio securities using an investment process that combines top-down and bottom-up research and analysis. The top-down portion of the investment process seeks to identify attractive investment themes and … Show more… Under normal market conditions, the Fund seeks to meet its investment objective by investing primarily in equity securities, including common stocks, preferred stocks, related depository receipts ( i.e., American Depository Receipts or ADRs, European Depository Receipts or EDRs, and Global Depository Receipts or GDRs) and real estate investment trusts (REITs). The Fund invests predominantly in common stocks. The Funds investments are the responsibility of the Adviser and the Funds sub-adviser, Tidal Investments, LLC (the Sub-Adviser). The Adviser, working together with the Sub-Adviser, makes buy, hold and sell decisions with respect to Fund portfolio securities using an investment process that combines top-down and bottom-up research and analysis. The top-down portion of the investment process seeks to identify attractive investment themes and market inefficiencies. The bottom-up portion of the process is used to make buy and sell decisions for equity securities. Both quantitative and fundamental analysis are used by the Adviser, along with valuation and technical considerations. The Advisers internal research and analysis leverages insights from diverse sources, including external research, to develop and refine its general investment theme and identify and take advantage of trends that have ramifications for individual companies or entire industries. The Adviser also evaluates market segments, products, services and business models positioned to benefit significantly from innovations in commerce relative to broad securities markets, and seeks to identify the primary beneficiaries of new trends or developments in commerce to select investments for the Fund. In pursuing the Funds investment goal, the Adviser may invest in companies in any economic sector or of any market capitalization and may invest in companies both inside and outside of the United States, including those in developing or emerging markets. The Fund is classified as non-diversified for purposes of the Investment Company Act of 1940, as amended (the 1940 Act), which means it generally invests a greater portion of its assets in the securities of one or more issuers and invests overall in a smaller number of issuers than a diversified fund. The Adviser may at times use derivatives to enhance Fund returns, produce income, and/or hedge risks associated with the Funds other portfolio investments. The Funds derivative investments may include, among other instruments: (i) options; (ii) volatility-linked ETFs; (iii) volatility-linked exchange-traded notes (ETNs); and (iv) and FLexible EXchange Options (FLEX Options) which are customizable exchange-traded option contracts guaranteed for settlement by the Options Clearing Corporation (OCC). The Fund may write covered call options to generate income, particularly in cases in which a holding has elevated implied volatility or is nearing a target price set by the portfolio managers as a potential exit point. In writing covered call options, the Fund sells an option on a security that the Fund owns in exchange for a premium (i.e. , income). This strategy generates income and helps to offset the cost of the Funds hedging strategy. The hedging component of the options overlay attempts to limit drawdowns during market declines, typically by owning either puts or put spreads on other exchange-traded fund(s) that tend to be inversely correlated with the Fund; the Fund typically uses puts on HYG (iShares iBoxx High Yield Corporate Bond Index) and IWM (iShares Russell 2000 ETF). The Fund will cover the position by continuing to own the security on which the option was written until the option expires, is exercised, or is repurchased. As a result of the Funds use of derivatives, the Fund may have economic leverage, which means the sum of the Funds investment exposures through its use of derivatives may significantly exceed the amount of assets invested in the Fund, although these exposures may vary over time The Fund is an actively managed exchange-traded fund (ETF) that does not seek to replicate the performance of a specified index. Show less