Asian stocks fell, with the regional benchmark index snapping a two-day rally, as concerns mounted that Greece may exit the euro zone and the Bank of Japan refrained from deploying further monetary stimulus, dimming the outlook for exporters.

Nikkei 225 8,556.6 -172.69 -1.98%

Hang Seng 18,786.19 -252.96 -1.33%

S&P/ASX 200 4,067.04 -53.97 -1.31%

Shanghai Composite 2,363.44 -9.87 -0.42%

Cosco Pacific Ltd., which operates container facilities at Greece’s Piraeus port, fell 4 percent in Hong Kong.

Mitsui & Co., a Japanese trading company, slid 1.6 percent after the nation’s trade data missed estimates.

Quanta Computer Inc. led computer makers lower in Taiwan, dropping 4.2 percent, after bellwether Dell Inc. forecast slower sales.

Shanghai Pharmaceuticals Holding Co. slumped 24 percent in Hong Kong on a report regulators are investigating the drugmaker for suspected financial fraud.