(Bloomberg) Billionaire investors George Soros and Seth Klarman are building positions in Irish building materials company CRH Plc before it shifts its primary listing to a US exchange from across the pond, a signal that efforts to tap into a larger pool of investors is working out.Most Read from BloombergRussia Calls Emergency Key Rate Meeting as Ruble PlungesHollywood Studios Offer Writers a New Deal With Push From Netflix, Iger to End StrikeTrump Indictment Lays Out Sweeping Georgia Electi