Byron Wien, the longtime Blackstone executive known for his market prognostications and intense networking, died at 90 on 25 October.

Wien, who developed a wide following with his annual Ten Surprises list, was vice chairman of the private wealth group at Blackstone, which he joined 14 years ago. For decades, his lists detailed economic, political and financial market surprises he expected to see in the year ahead. He produced the 38th edition last January.