U.S. banks including Goldman Sachs (GS.N) JPMorgan (JPM.N) and Citigroup (C.N) are set to report Q1 results this week, and traders are keen to see how stock markets react to these earnings reports.
Last week, the dollar rose against the yen, buoyed by a rally in U.S. stocks after positive earnings guidance from U.S. bank Wells Fargo (WFC.N).
"If U.S. earnings results show signs that the U.S. is pulling away from the worst of the economic downturn, risk appetite is expected to grow, putting pressure on the yen," said Yoshihisa Kanzaki, currency dealer at Shinkin Central Bank.
Market watchers said the currency market has priced in positive U.S. earnings figures, so the market is more likely to react to any negative surprises.
The dollar was trading around 100.33 yen
The euro was quoted at $1.3144
Against the yen, the euro was at 131.85 yen
The Australian dollar rose above 73.00 yen
Retail investors seemed to be picking up the higher yielding Aussie, with thin trade exaggerating its price swings, market watchers said.
Australia last week slashed its key cash rate by just 0.25 basis points to 3.0 percent, less than some had expected. (Reporting by Kaori Kaneko; Editing by Hugh Lawson)