TOKYO, March 18 (Reuters) - Japan's Nikkei share average

rose more than 1% on Tuesday, tracking Wall Street's overnight

gains, with trading firms leading the gains.

By 0019 GMT, the Nikkei index was up 1.3% at

37,891.30 and the broader Topix rose 1.3% to 2,783.39.

U.S. stocks gained for a second straight session on Monday

as investors sought bargains after Nasdaq's and the S&P 500's

four-week tumble and assessed the latest economic data to gauge

the impact of the Trump administration's policies.

In Japan, trading firms jumped after Warren Buffett's

Berkshire Hathaway ( BRK/A ) raised its holdings in five Japanese

trading houses.

Mitsui & Co ( MITSF ) jumped 4.9% and Mitsubishi Corp ( MSBHF )

climbed 4.5%.

Uniqlo-owner Fast Retailing ( FRCOF ) rose 1.5% to give the

biggest boost to the Nikkei.