“One of the most impressive traders in the world” or a star whose reputation was built from being a “bull in a bull market”? Opinion is divided on Moore Capital’s Greg Coffey, known as “the Wizard of Oz” in a nod to his Australian heritage and trading prowess, who yesterday told investors that he was bowing out of the industry.

Coffey, 41, announced in an investor letter he was calling time on an almost 20-year career to spend more time with his family and in his native Australia, as reported in Financial News. His GC Emerging Macro Fund was down about 10% this year before making back most of the losses in September, investors said. Assets in the fund have fallen from about $1.6bn in 2010 to $450m.