
By Kevin Buckland
TOKYO, Jan 26 (Reuters) - Japan's Nikkei share average fell on Monday as a stronger yen broadly weighed on the market, while currency intervention worries deterred equity buyers.
The yen traded as strong as 154.22 per dollar JPY=, a more than three-month peak, after what looked like a precursor to intervention sent Japan's currency spiking on Friday and catalysed further advances over the rest of the day.
A source told Reuters that the New York Federal Reserve conducted so-called "rate checks" on the dollar-yen pair that day, potentially signalling both that intervention was close and that it could be a joint action between U.S. and Japanese authorities.
A stronger yen cuts the value of offshore revenue for Japan's many heavyweight exporters.
The Nikkei .N225 sank 1.6% to 53,008.67 in early trading, with 196 of its 225 components under water, while 28 rose and one traded flat.
The broader Topix .TOPX dropped 1.8% to 3,565.76.
An index of automotive shares .ITEQP.T tumbled 2.8%, the most among the Tokyo Stock Exchange's 33 industry groups.
Rubber .IRUBR.T, which includes tyre manufacturers, sank 2.5%.
Toyota Motor 7203.T slid 3.1% and Honda 7267.T slumped 3.7%.
"The risk of intervention remains, and the outlook is unclear," said Maki Sawada, a strategist at Nomura Securities. "For both currencies and stocks, it's hard for traders to take positions in this environment."
The biggest weight on the Nikkei was artificial intelligence (AI)-focused startup investor SoftBank Group 9984.T, which sank 4.2%, shaving 142 points from the index.
At the same time, Furukawa Electric 5801.T and Fujikura 5803.T, which have benefited from bets on AI data centre investment, rose 6.4% and 2.2%, respectively.