Jane Street Following Goldman Sachs Into Big Bond Trades (1)

Jane Street Group LLC, a giant of exchange-traded funds, is muscling in on a fast-growing bond-market opportunity that Goldman Sachs Group Inc. first exploited in 2016.

The firm is capitalizing on its position as one of the biggest traders of fixed-income ETFs to profit from the explosive growth of so-called credit-portfolio trades, which allow investors to buy or sell large numbers of bonds all at once. It’s able to do this because it has the expertise and client base already in place for its fixed-income ETF trading, which probably jumped more than 30 percent last year to north of $750 ...