The dollar rose broadly on Monday as investors, rattled by renewed concerns about the global economic outlook and financial sector stability, sought the safety of the U.S. currency.

The yen also benefited from the risk-averse environment, as traders unwound positions in higher-yielding currencies funded by cheap yen loans.

“Risk aversion is back with a vengeance,” said John McCarthy, director of foreign exchange at ING Capital Markets in New York. “The dollar is benefiting from safe-haven flows, and the yen is benefiting from unwinding of carry trades.”

The dollar index, which measures the greenback against a basket of six major currencies, climbed 0.6 percent to 72.459.

Against the yen, the dollar fell 0.3 percent to 102.33 yen. The euro declined 0.8 percent to $1.5818. Sterling was down 1.1 percent at $1.9871.

Worries about the health of the financial sector resurfaced after Lehman Brothers reported a $2.8 billion first-quarter loss and announced plans to raise $6 billion in capital.

Data also showed a slump in German business sentiment, adding to concerns about slowing global growth.

“The combination of negative news on the financial front and weaker economic data is weighing on risk appetite and supporting the dollar,” said Brian Dolan, chief currency strategist at Forex.com in Bedminster, New Jersey.

Looking ahead, investors will be closely watching U.S. economic data this week, including durable goods orders and new home sales, for further clues about the strength of the U.S. economy.