SINGAPORE/NEW YORK - Asia shares rose on Thursday, helped by a jump in their Chinese counterparts on Beijing's latest measures to shore up its stock market, while elsewhere, investors continued to have their eyes on US President Donald Trump's policy plans.

MSCI's broadest index of Asia-Pacific shares outside Japan was up 0.11 percent, reversing its losses from earlier in the sesion. Japan's Nikkei ticked up 0.47 percent.

In the broader market, global shares gave up some of the enthusiasm from Trump's mammoth spending plans for artificial intelligence infrastructure that had turbocharged a rally in technology stocks.

Late on Tuesday, he announced a $500 billion private-sector AI infrastructure investment plan from a venture involving Oracle, OpenAI and SoftBank, even though there was no clarity on funding.

The Information reported on Wednesday that OpenAI and Japanese conglomerate SoftBank will each commit $19 billion to fund the joint venture.

Shares of SoftBank last traded more than 5 percent higher.

But US and Europe stock futures edged lower, with Nasdaq futures losing 0.24 percent while S&P 500 futures dipped 0.11 percent.

EUROSTOXX 50 futures similarly declined 0.15 percent.

Tariff threats

Moves in currencies have been relatively volatile since Trump's reutrn to the White House, owing to his plans around tariffs.

Trump said Mexico and Canada could face levies of around 25 percent by Feb 1. Similarly, he promised duties on European imports, without elaborating further.

"Economic realities suggest that these tariffs invite retaliation," said Brian Arcese, portfolio manager at Foord Asset Management. "Reciprocal tariffs from trading partners could slow global growth and drive up consumer costs everywhere, not least in the US."

Still, investors cheered that tariffs had not been imposed immediately, which left the dollar broadly on the back foot.

The US dollar index, which measures the currency against six others, dipped 0.03 percent to 108.25, after having fallen to its lowest level since Jan 6 at 107.75 in the previous session.

The euro ticked up 0.03 percent to $1.0412, while sterling hovered near a two-week high and last bought $1.2317.

"The threat of tariffs continues to hang over markets, but the rapidly declining half life of headlines shows you the market is already numb to the shenanigans," said Brent Donnelly, president at Spectra Markets.

The dollar fell 0.13 percent to 156.29 yen, languishing near a one-month low hit earlier in the week.

The Japanese currency has strengthened against the dollar in the past few sessions, supported by growing expectations the Bank of Japan will raise interest rates at the conclusion of its policy meeting on Friday.

In commodities, oil prices eased, pressured in part by concerns on how Trump's proposed tariffs could affect global economic growth and demand for energy.

Brent crude fell 0.16 percent to $78.87 a barrel, while US crude slipped 0.15 percent to $75.32 per barrel.

Spot gold was steady at $2,754.26 an ounce.