 Investment manager Donald Netter is stepping up his battle with First Trust High Income LongShort Fund FSD by asking the closed-end fund to restructure or give investors their money back because it has been trading at a discount for years. Netter, whose Dolphin Limited Partnership I LP owns 450,000 shares of FSD valued at approximately 6.7 million, is criticizing the First Trust fund for trading at 13 below the funds net asset value. Netter, who first began complaining to FSD a year ago, said the funds managers have failed to appropriately swap out certain fixed rate securities at a time interest rates are rising. 