Short-selling: Man GLG, Marshall Wace and BlackRock dominate UK-listed bearish bets Submitted 27/10/2021 - 10:48am Man GLG, the discretionary hedge fund unit of London-headquartered global asset management giant Man Group, now holds the largest number of short positions against UK-listed stocks, followed by Marshall Wace and BlackRock, according to new industry data. New analysis from ETP provider GraniteShares shows that GLG – the long-running discretionary manager which runs a range of long/short equity, emerging market and multi-strategy credit funds – held 23 negative wagers on publicly-traded UK names.