TOKYO (Kyodo) -- Tokyo stocks rebounded sharply Thursday to snap a four-day losing streak, lifted by heavyweight semiconductor and export-related issues, while concerns about Japan's fiscal health triggered a selloff in the yen and bonds.

The 225-issue Nikkei Stock Average ended up 1,286.24 points, or 2.65 percent, from Wednesday at 49,823.94. The broader Topix index finished 53.99 points, or 1.66 percent, higher at 3,299.57.

On the top-tier Prime Market, gainers were led by nonferrous metal, electric appliance and securities house shares.

The yen hit a fresh 10-month low against the U.S. dollar in the upper 157 zone in Tokyo following its substantial retreat in New York overnight, on concern that the country's fiscal health will deteriorate further amid large-scale stimulus measures the government is expected to compile.

The yen briefly slid beyond 181.50 against the euro to its lowest level since the single European currency was introduced in 1999.

At 5 p.m, the dollar fetched 157.45-47 yen compared with 157.13-23 yen in New York and 155.51-53 yen in Tokyo at 5 p.m. Wednesday.

The euro was quoted at $1.1519-1520 and 181.37-41 yen against $1.1534-1544 and 181.29-39 yen in New York, and $1.1581-1582 and 180.10-14 yen in Tokyo late Wednesday afternoon.

The yield on Japan's benchmark 10-year government bond hit 1.835 percent for the first time in more than 17 years, continuing its climb on speculation that the government will increase bond issuance to fund a planned economic stimulus package, dealers said.

It ended at 1.815 percent, up 0.050 percentage point from Wednesday's close.

On the equities market, artificial intelligence-related stocks lifted the Nikkei index, which briefly reclaimed the key 50,000 line after Nvidia Corp. posted better-than-expected earnings, easing investor concerns about whether the sector can generate profits commensurate with the investments, analysts said.

The market also drew support from exporter shares, which benefit from a weaker yen as it boosts the value of overseas profits when repatriated.

Seiichi Suzuki, chief equity market analyst at the Tokai Tokyo Research Institute, noted that concerns over Japan's fiscal health and fading expectations for imminent U.S. rate cuts "made it harder to find reasons to buy yen with dollars."

But gains in stocks were trimmed in the afternoon, with sentiment dampened by concern about higher borrowing costs, as interest rates climbed further, Suzuki said.