 Shares of Unity Software Inc. U, 7.78 slumped 4.3 in premarket trading Monday, after the video gaming software company said it rejected Applovin Corp.s APP, 5.40 unsolicited buyout bid valued at 20 billion submitted last week. The company said after a thorough evaluation of Applovins bid, the board of directors unanimously determined it is not in the best interest of its shareholders to accept the bid, and it doesnt represent a superior proposal as defined by the merger deal with ironSource Ltd. 