Asian stocks fell amid concern stimulus measures by central banks from the U.S to Asia and Europe won’t be enough to boost global economic growth and as more than 900 companies in Japan’s Topix Index traded ex- dividend today.

Nikkei 225 8,906.7 -184.84 -2.03%

S&P/ASX 200 4,361.6 -11.26 -0.26%

Shanghai Composite 2,003.52 -25.77 -1.27%

BHP Billiton Ltd., the world’s biggest mining company, fell 1.3 percent in Sydney.

BYD Co., the Chinese carmaker partly owned by Warren Buffett’s Berkshire Hathaway Inc., tumbled 9 percent in Hong Kong as CLSA Asia Pacific Markets cut its price target by 94 percent, citing a worsening outlook for its products.