Violent swings in the U.S. stock market wrenched down the dollar’s value Tuesday in a panicky sell-off that left the currency at the weakest level against the German mark in more than three months.

Foreign-exchange traders called it the worst one-day slide of the dollar this year and said Wall Street’s dizzying sell spasms have become the main driving force behind the currency’s behavior.

“With the stock market environment, people just dumped the dollar,” said Nathaniel Litwak, manager of foreign exchange trading at the New York branch of Banque Indosuez.

Currency in Dollar in Exchange Dollars foreign currency

Canada .7303 1.3693 France .1990 5.0240 Germany .6754 1.4806 Great Britain 1.5595 .6412 Italy .000660 1514.25 Japan .009153 109.25 Mexico .130762 7.6475