According to Reuters " Elon Musk and key institutional investors will probably tighten their control over electric car maker Tesla Motors Inc after it acquires sister company SolarCity Inc." "The largest institutional shareholder, Fidelity Management and Research, will see its stake grow from 12.2 percent to 13.4 percent. Two Fidelity-managed funds, Fidelity Contrafund and Fidelity OTC, together will control another 7.3 percent, up from 6.5 percent."