 Shares of Datto Holding Corp. shot up 20.2 into record territory in premarket trading Monday, provider of security for managed service providers MSPs announced an agreement to be acquired by security software provider Kaseya in a cash deal valued at 6.2 billion. Under terms of the deal, Kaseya will pay 35.50 for each Datto share, which represents a 23.6 premium to Fridays closing price of 28.72, and implies a market capitalization of about 5.82 billion. 