Venture-capital firm Kleiner Perkins is dividing in two after rift over investing strategies. : Kleiner Perkins Caufield & Byers is splitting in two, a surprise rupture that reflects the storied venture-capital firm’s struggle to balance making smaller bets on young startups and jumbo investments in companies on the cusp of initial public offerings. The Silicon Valley firm’s growth-investment team focused on later-stage funding is leaving the firm, spurred partly by internal differences over investing strategy and resulting in the departure of famed former Morgan Stanley analyst Mary Meeker.