Asian stocks rose, with the regional benchmark index headed for its biggest gain this month, after the International Monetary Fund raised global economic forecasts and Spain sold more debt than targeted, boosting the earnings outlook for exporters.

Nikkei 225 9,667.26 +202.55 +2.14%

Hang Seng 20,777.39 +215.08 +1.05%

S&P/ASX 200 4,348.66 +59.88 +1.40%

Shanghai Composite 2,380.88 +45.86 +1.96%

Toyota Motor Corp., Asia’s biggest carmaker by market value, gained 2.8 percent in Tokyo. OCI Co., a maker of materials used in solar panels, advanced 4.7 percent in Seoul on speculation oversupply in the industry may ease as companies consolidate and restructure.

BHP Billiton Ltd. rose 2.5 percent in Sydney after commodity prices gained and the miner’s iron-ore production rose.

CSR Corp., a Chinese trainmaker, increased 4.6 percent in Hong Kong after a report it won orders from Hong Kong.