TOKYO, RAW – Inflation fears have pressured Asian stocks and buoyed the US dollar after data overnight showed US consumer prices surged at the fastest pace since 1990 last month, boosting the case for faster Federal Reserve policy tightening.

Nominal US Treasury yields shot higher, with the benchmark 10-year note leaping by the most since February, while real yields, which take inflation into account, dipped to record lows.

Gold jumped to a five-month high and bitcoin hit a record as investors sought inflation hedges.

Oil pulled back sharply from near seven-year highs after US President Joe Biden said his administration was looking for ways to reduce energy costs.

MSCI’s broadest index of Asia-Pacific shares outside Japan was down 0.85 per cent, led by a 1.19 per cent slide in Australia’s benchmark.

Chinese blue chips slipped 0.09 per cent.

Japan’s Nikkei bucked the trend by rising 0.24 per cent, supported by the yen’s weakness against a resurgent US dollar and as US stock futures ticked up slightly.

Overnight, the S&P 500 tumbled 0.82 per cent, its worst day in more than a month.

That marked the first back-to-back declines in a month, after the index closed at a record peak to start the week.

The US dollar index, which gauges the currency against six major peers including the yen and euro, hovered just below the high reached on Wednesday of 94.905, a level not seen since July last year.

The greenback added 0.13 per cent to 114.04 yen, up from as low as 112.73 at the start of the week.

The US consumer price index surged 6.2 per cent on an annual basis, with petrol leading a broad-based increase that added to signs inflation could stay uncomfortably high well into 2022 amid snarled global supply chains.

Inflationary pressures are also brewing in the labour market, with other data on Wednesday showing the number of Americans filing claims for unemployment benefits fell to a 20-month low.

The White House and the Fed have maintained prices will fall once supply bottlenecks start easing, with the central bank only last week reiterating high inflation is “expected to be transitory”.

“The Fed’s resolve is facing a testing time,” Rodrigo Catril, a senior foreign-exchange strategist at National Australia Bank in Sydney, wrote in a client note.

“Supply constraints may well turn out to be transitory, but the rise in core drivers increases the pressure on the Fed to trigger a monetary policy response.”

The money market now prices a first Fed interest-rate increase by July.

Benchmark 10-year Treasury yields jumped the most in seven weeks to as high as 1.592 per cent on Wednesday. The Treasury market is closed globally on Thursday for a US holiday.

Meanwhile, the yield on 10-year Treasury Inflation-Protected Securities dipped sharply to as low as an unprecedented -1.243 per cent before drifting higher over the course of the session.

Inflation expectations soared, with the five-year break-even inflation rate soaring to a record 3.113 per cent

The volatility spilled into other markets, with the CBOE Volatility index, Wall Street’s so-called fear gauge, touching its highest level in nearly a month.

Spot gold traded around $US1,850 after surging as high as $US1,868.20 overnight for the first time since mid-June.

Bitcoin initially leapt to a record high of $US69,000 before retreating to last trade just below $US65,000.

US West Texas Intermediate (WTI) crude gained 25 cents to $US81.59 per barrel, but well off the overnight high of $US84.97 and seven-year peak of $US85.41 reached late last month.

Brent crude futures rose 30 cents to $US82.94 a barrel, but down from as high as $US85.50 on Wednesday and October’s three-year peak of $US86.70.