Guard Capital Management, the Hong Kong-based firm led by former Goldman Sachs Group Inc. trader Leland Lim, reopened its macro hedge fund to new investors this month after outperforming peers in 2015, said a person with knowledge of the matter. Guard outperformed in a year when many funds seeking to profit from broad trends in the currency, stock, bond and commodity markets stumbled, including Brevan Howard Asset Management, whose main macro...