TOKYO (Kyodo) -- Tokyo stocks rebounded Tuesday on buybacks of technology shares after heavy losses, while investors were focused on the closely contested U.S. presidential election with voting set to start later in the day.

The 225-issue Nikkei Stock Average ended up 421.23 points, or 1.11 percent, from Friday at 38,474.90. The broader Topix index finished 20.00 points, or 0.76 percent, higher at 2,664.26. Japanese financial markets were closed Monday for a national holiday.

The Tokyo Stock Exchange extended its regular trading hours by 30 minutes from Tuesday to close on 3:30 p.m. as part of its efforts to make the bourse more attractive to foreign investors.

On the top-tier Prime Market, gainers were led by securities house, nonferrous metal and wholesale issues.

The U.S. dollar remained almost flat in the lower 152 yen range, as investors refrained from making big moves due to the uncertain outcome of the U.S. presidential election, dealers said.

At 5 p.m., the dollar fetched 152.27-28 yen compared with 152.09-19 yen in New York at 5 p.m. Monday.

The euro was quoted at $1.0888-0890 and 165.80-84 yen against $1.0871-0881 and 165.45-55 yen in New York late Monday afternoon.

The yield on the benchmark 10-year Japanese government bond ended at 0.930 percent, down 0.010 percentage point from its close on Friday. The debt was bought, tracking an overnight decline in long-term U.S. Treasury yields.

The recovery in Tokyo stocks was driven by investors buying battered technology shares, which had pushed the Nikkei benchmark down by over 1,000 points on Friday.

Also lifting the market was the buying of securities houses, after Nomura Holdings Inc. reported upbeat earnings for the April-September period last week.

But gains slowed later in the day with investors remaining cautious over the U.S. presidential election results, with opinion polls indicating a close race between Democratic nominee Kamala Harris and Republican candidate Donald Trump in key swing states.

"Trading volume was low as many investors stayed on the sidelines," said Toshikazu Horiuchi, an equity strategist at IwaiCosmo Securities Co.