TOKYO (Kyodo) -- Tokyo stocks were higher Friday morning, led by solid gains in semiconductor-related shares following rises on Wall Street overnight.

The 225-issue Nikkei Stock Average rose 389.15 points, or 1.02 percent, from Thursday to 38,415.32. The broader Topix index was up 21.53 points, or 0.80 percent, at 2,704.34.

The U.S. dollar briefly fell to the upper 153 yen zone as the Japanese currency, seen as a safe-haven asset, was sought amid escalating tensions in the Russia-Ukraine war, dealers said.

At noon, the U.S. dollar fetched 154.38-39 yen compared with 154.48-58 yen in New York and 154.89-92 yen in Tokyo at 5 p.m. Thursday.

The euro was quoted at $1.0470-0474 and 161.64-71 yen against $1.0468-0478 and 161.77-87 yen in New York, and $1.0536-0537 and 163.21-25 yen in Tokyo late Thursday afternoon.

Stocks opened higher following gains on all three major U.S. indexes overnight and extended gains on heavyweight semiconductor issues after U.S. chip giant Nvidia Corp.'s earnings report was digested without any major volatility, analysts said.

"The smooth passage of Nvidia's earnings report brought a sense of relief and a slightly optimistic mood to investors," said Kazuo Kamitani, a strategist in the Investment Content Department of Nomura Securities Co.

The market was also supported by buying in financial-related issues where recent earnings have been notably strong, analysts said.