Japan’s Nikkei share average rallied for a sixth straight session to scale a 20-month high on Thursday, as investors cheered chipmaking investment plans and reasonable April trade data.

The gains are the second such winning streak for the Nikkei in as many months as stocks surf a wave of buybacks and enthusiasm about governance reform.

It has climbed nearly 17% this year, far outshining world stocks’ 8% rise.

The Nikkei jumped 1.6% to close at 30,573.93, also posting its biggest daily gain since March 22. The broader Topix jumped 1.14% to 2,157.85, a 33-year high.

Japan’s exports rose 2.6% in April from a year earlier, Ministry of Finance data showed - a little below expectations.

“Although exports have slowed from the previous month, this result was still relatively good compared to other Northeast Asian countries,” analysts at ING said in a note to clients.

“The April trade results further support our view that the Japanese economy will stay on a recovery path.”

Japan’s Nikkei closes above 30,000 for first time in 20 months

Japanese Prime Minister Fumio Kishida also said he expected chipmakers to invest in Japan after a meeting with industry executives, while Micron said it plans to spend up to 500 billion yen ($3.7 billion) to bring the latest ultraviolet chipmaking technology to Japan.

Chipmaking-equipment maker Tokyo Electron rose 5.45% and chip-testing equipment maker Advantest jumped 7.99%, providing the biggest boost to the Nikkei.

Among other winners was Sony Group Corp, which jumped 6.4% to a 16-month high as it examines a partial spin-off of its financial division.

Power companies were among the top losers, extending falls from Wednesday as they grappled with high fuel prices squeezing profit margins.

Japan’s government on Tuesday approved electricity price rises but had taken months to do so.

Tokyo Electric Power fell about 4.75% and Kansai Electric Power lost 2.81%.