Fidelity shifts course — and gears — on RIA leadership by naming relational co-heads to fill the role held singly by departing, technology-focused Rohit Mahna RIABizFidelity’s Rohit Mahna to Exit. Here’s Who is Taking Over His Role MSNFidelity shifts course — and gears — on RIA leadership by naming a head of the RIA and a head of clearing business to fill the role held singly by departing, technology-focused Rohit Mahna RIABiz