TOKYO, Feb 12 (Reuters) - The Nikkei share average broke

past 58,000 for the first time on Thursday, joined in a rare

triple rally with government bonds (JGBs) and the yen as markets

processed the fallout of Prime Minister Sanae ​Takaichi's

historic election win.

Resuming trade after a holiday in Japan, the ‌benchmark

Nikkei 225 Index reached an intraday record of 58,015.08

before losing steam and closing slightly in the red at

57,639.84. So far in ⁠2026, the Nikkei has surged nearly 15%. The

broader Topix climbed 0.7% to 3,882.16.

The earnings season ⁠is underway in the world's

fourth-largest economy, and domestic share markets have ‌been

buoyed by bets that ‌a decisive showing by Takaichi's Liberal

Democratic Party in Sunday's national election will enable her

to push through spending and tax-relief measures.

Since ​Takaichi began her ascent to become Japan's first female

premier ‌in October, the "Takaichi trade" has pushed domestic

shares to successive record highs while spurring declines in

JGBs and the yen. Takaichi reiterated on Monday that she was

committed ​to "responsible, proactive fiscal policy."

"Following recent strong earnings results ​and the ‌LDP's

landslide victory under the Takaichi administration, the market

has been on a significant upward trend," Wataru Akiyama, a

strategist at Nomura Securities, said about domestic

shares. "The sense of overheating seems to ⁠be intensifying, so

profit-taking movements could emerge from here on."

The Nikkei's 14-day relative strength index (RSI) ⁠reached 72

on Thursday, above the 70-mark that indicates gains have

stretched too far and are poised to reverse.

Prime Minister Takaichi is sensitive to how markets react to her

decisions, particularly yen and JGB yield moves, two sources

told Reuters. The yen rallied on Thursday after top currency

diplomat Atsushi Mimura issued a ⁠fresh warning ‌against currency

volatility, and mentioned speculation about rate checks, a

typical precursor to ‌actual market intervention.

Long-dated securities led a rally in JGBs on the day, while the

yen touched a two-week ⁠high of 152.28 per dollar.

The yen's surprising strength has sprung out of Takaichi's

ability to secure a solid majority in the lower house and end

concerns about political instability that had lingered since

July last year, said Hirofumi Suzuki, chief foreign-exchange

strategist at SMBC.

"This suggests that short positions in the yen have been

unwound," Suzuki added.

There were 142 advancers on the Nikkei index against 82

decliners. Cosmetics maker Shiseido ( SSDOF ) surged 15.8%, the

most since October 2008, after ​forecasting its first profit in

three years. Honda Motor ( HMC ) was among the bigger losers,

slumping 3.5% after the automaker posted disappointing results.

Results from SoftBank Group after the bell on

Thursday will be closely watched for ​details on how it will fund

its massive ‌investments in AI.

(Reporting by Rocky Swift in Tokyo; Editing by ​Subhranshu Sahu,

Sam Holmes and Sonia cheema)