LONDON / SYDNEY – European markets rallied on Wednesday on news the European Central Bank would hold an emergency meeting on the recent bond market sell-off ahead of what is expected to be the most aggressive rise in US interest rates since 1994.

Hopes of a quiet run in to what is forecast to be a three-quarter point hike by the Federal Reserve later were quickly dashed as the ECB's unexpected meeting – less than week after its last scheduled one – triggered a rush of activity.

The euro jumped almost 0.75 percent to $1.0487 pushing the dollar index off a 20-year high in the process.

Italy's 10-year bond yields, which have risen to 8-year highs as euro zone debt worries have returned, charged back under 4 percent on course for the biggest daily fall since the start of March.

Italy's stock market also jumped 2 percent as its banks leapt 6 percent. Europe more broadly climbed 0.5 percent while the euro's rise also scored a 16-month high against Britain's pound as it suffered the Brexit blues again. 

"The best laid plans of the ECB and President Lagarde to normalize policy in an orderly fashion have just run into the reality of the bond market," said Societe Generale strategist Kit Juckes.

"The big question is whether it is even possible (to normalize policy) or we are just stuck in the same old world where we need some kind of asset buying program to hold the bond market together," he added.

The worries about rising borrowing costs and inflation globally have been hammering financial markets all year.

Economists fear drastic Fed action in particular could tip the world into recession and the degree to which the US central bank lifts rates later is being intensely watched.

Treasury yields had hit decade highs overnight and the dollar a 20-year peak as futures implied it was near certain the Fed would hike by 75 basis points to a range of 1.50-1.75 percent later on Wednesday.  

That would be the biggest increase since 1994, and markets already have rates reaching an eye-watering 3.75-4.0 percent by the end of the year.

"Against a backdrop of sky-high inflation, rising rates, and growing recession concerns, the S&P 500 has had its worst start to the year since 1962," analysts at Goldman Sachs said.

"A likely coming peak in inflation is probably not sufficient to see the bottom, and that similar past drawdowns have only ended when the Fed has shifted towards easier policy."

That could be some time away so they recommend investors reduce portfolio duration and increase exposure to real assets.

With so much priced in, a few brave investors, also buoyed by the ECB, were looking for bargains and S&P 500 futures were up 0.7 percent, while Nasdaq futures rose 0.75 percent and Dow futures added 0.4 percent.

MSCI's broadest index of Asia-Pacific shares outside Japan was closing almost flat, but is down sharply on the week.

Japan's Nikkei lost 1.1 percent, though sentiment was helped by a survey showing an improvement in confidence among Japanese manufacturers.  

Yield advantage

The ECB's move allowed bond markets everywhere to rally after their recent hammering, with 10-year Treasury yields dipping to 3.43 percent and away from Tuesday's peak of 3.498 percent.

Two-year yields stood at 3.37 percent, after touching the highest since 2007 at 3.456 percent overnight. Given many US borrowing rates are linked to yields, financial conditions have already tightened markedly there even before the Fed hikes.

Treasury yields are also the benchmark for bonds across the globe, so financial conditions are tightening pretty much everywhere. That is a major headwind for consumer spending power, while pressuring emerging market countries that borrow in dollars.

It has also tended to boost the US dollar, which had hit a 20-year high against a basket of currencies before the ECB's news , led by big gains on the low-yielding Japanese yen.

The dollar was trading at 134.66 yen, having reached heights last visited in 1998 at 135.60.

The latest gains came as the Bank of Japan ramped up its bond buying to keep yields near zero, even as much of the rest of the world tightens policy.  

Still, the sheer pressure on the yen and bonds has stoked speculation the BOJ could be forced to amend its yield control policy at a meeting on Friday.  

Surging yields and a sky-high dollar have been a burden for gold, which was near its lowest in a month at $1,814 an ounce.

Oil prices edged up after the Organization of the Petroleum Exporting Countries stuck to its forecast that world oil demand will exceed pre-pandemic levels in 2022.

Brent was 31 cents firmer at $121.48, while US crude rose 30 cents to $119.23 per barrel.