The Financial Select Sector SPDR ETF gained nearly 0.6% after Daniel Tarullo announced he will retire on or around April 5.
A trained accountant with little background in money management, Allianzs Jackie Hunt has taken on a formidable challenge.
Dawn Fitzpatrick's selection is Soros' seventh chief investment officer since the departures of traders Stanley Druckenmiller and Nicholas Roditi in 2000.
She is the third generation to control the company and, like her family members, has maintained a low profile despite the reach of the firms mutual funds.
Bossen joined as director of ETF business development at the institutional intermediary division and will focus on the IndexIQ unit that MainStay acquired last year.