Sundheim’s D1 Hedge Fund Tumbled 6% in March as Biggest Stock Bets Soured

D1 Capital Partners’ equities book tumbled 6% in March, according to people familiar with the matter, making Dan Sundheim’s firm one of the worst-performing stock-pickers that month.

Its six-biggest stock bets as of year-end all lost money, led by industrials company Flowserve Corp. and home-building-products maker James Hardie Industries Plc, which dropped 17% and 22%, respectively. The hedge fund is still up 2.7% for the year, one of the people said.