By Tatsuo Ito 
 

The dollar was largely unchanged versus its rivals in Asia Tuesday, with traders refraining from making any aggressive bets before a national holiday in Japan and the Bank of Japan's one-day policy board meeting on Thursday.

As of 0250GMT, the dollar was at Y119.12 against Y119.02 in late New York Monday. The WSJ Dollar Index, a measure of the dollar against a basket of major currencies, was up 0.06% at 86.33.

"The dollar/yen is now well-balanced between fading hopes for an early rate increase in the U.S. and lingering expectations about further easing in Japan," said Takahiro Iizuka, a trader at Mizuho Trust and Banking.

While traders here are paying less attention to the outcome of the U.S. policy-setting meeting this week, they have maintained some caution over the BOJ meeting, even though many economists expect there will be no major change to its policy both in the U.S. and in Japan.

Mr. Iizuka said a chance of additional easing by the BOJ can't be completely excluded, "given the past patterns that BOJ Governor Haruhiko Kuroda surprised markets in the past".

He said the price of one-week USD/JPY options that cover the BOJ's one-day meeting remained high since April 23, with terms implying around 10% volatility in the currency pair.

By comparison, the same contract traded before April 23 was at a relatively cheaper implied volatility of below 8%.

"This indicates that some overseas investors appear to be betting on additional action by the BOJ. They appear to be buying those options like lottery tickets," he added.

The BOJ's one-day policy board meeting twice a year -both in late April and October- normally draws more attention than monthly two-day meetings as the central bank sets the tone for its future policy based on the release of semiannual outlook report on inflation and growth.

A unusual call from an influential lawmaker urging the central bank to take action also has heightened caution among traders.

The single currency was at $1.0873 versus 1.0894. Recent gains in global oil prices and optimism that Greek's debt problem could be solved without causing serious damage to the global economy have kept the single currency solid, traders said. But Yunosuke Ikeda, head of FX strategy at Nomura Securities said in a note that "it's hard to expect the euro to turn upward," citing funds flow out of the region and views that interest rate gap between the Eurozone and the U.S. would widen as reasons for fundamental weakness in the euro.

 
Interbank Foreign Exchange Rates At 00:50 EST / 0450 GMT 
 
                         Latest     Previous   %Chg   Daily   Daily    %Chg 
                                    2150 GMT          High    Low      12/31 
Dollar Rates 
USD/JPY Japan           119.12-13      119.04-05  +0.07   119.20   119.02  -0.50 
EUR/USD Euro            1.0873-76      1.0889-92  -0.15   1.0893   1.0867 -10.12 
GBP/USD U.K.            1.5230-35      1.5236-41  -0.04   1.5240   1.5219  -2.22 
USD/CHF Switzerland     0.9547-51      0.9548-52  -0.01   0.9567   0.9541  -3.96 
USD/CAD Canada          1.2105-10      1.2084-89  +0.17   1.2111   1.2086  +4.18 
AUD/USD Australia       0.7865-69      0.7858-62  +0.09   0.7875   0.7834  -3.72 
NZD/USD New Zealand     0.7621-27      0.7642-48  -0.27   0.7647   0.7620  -2.19 
 
Euro Rate 
 
EUR/JPY Japan           129.52-56      129.61-65  -0.07   129.67   129.47 -10.63 
EUR/JPY Yen 
 
Source: ICAP PLC 
 

Write to Tatsuo Ito at tatsuo.ito@wsj.com