Asian stocks swung between gains and losses on the busiest day of Japan’s earnings season after the country’s industrial production missed estimates and U.S. growth unexpectedly stalled. Kawasaki Heavy Industries Ltd. jumped after raising its operating profit forecast.

Nikkei 225 11,138.66 +24.71 +0.22%

Hang Seng 23,729.53 -92.53 -0.39%

S&P/ASX 200 4,878.78 -17.91 -0.37%

Shanghai Composite 2,385.42 +2.95 +0.12%

Whitehaven Coal Ltd., subject of an unsuccessful takeover proposal from Nathan Tinkler last year, fell 5.5 percent after saying first-half earnings will drop on lower prices.

Daewoo Engineering & Construction Co., a builder of power plants and residential buildings, slid 5.4 percent after its parent’s profit fell.

Kawasaki Heavy rose 7.2 percent.

Datang International Power Generation Co. jumped 6.9 percent after saying its 2012 profit probably more than doubled.