Wall Street indices climbed to records on Wednesday after the Federal Reserve upgraded its outlook for the world's largest economy and made clear its easy money policies will not end anytime soon.
Tech stocks had borne the brunt of recent investor jitters that a flood of government stimulus would cause inflation to move higher and force the Fed to raise rates sooner than expected.
But Fed Chair Jerome Powell soothed their concerns, saying at the conclusion of the two-day meeting of the bank's policy-setting committee that inflation and unemployment remain far from the Fed's targets and, by extension, rate hikes were not on the horizon.
"The economy is a long way from our employment and inflation goals, and it is likely to take some time for substantial further progress to be achieved," Powell said, promising that stimulus will remain in place "for as long as it takes."
Indices went solidly into the black after he spoke, with the Dow marking its first close above 33,000 points and the S&P 500 also hitting a record.
"The most important thing is that he is saying that the Fed is not going to act preemptively to avoid inflation," Gregori Volokhine of Meeschaert Financial Services said.
Prior to the Fed meeting, Frankfurt ended the day with a gain of 0.3 percent, Paris was flat and London shed 0.6 percent.
- Bond fears -
US benchmark 10-year Treasury yields -- a guide to future interest rate expectations -- have risen in recent weeks as anxiety mounts about higher inflation, further stirred by the $1.9 trillion stimulus package President Joe Biden signed last week.
That has caused equity investors to shift out of tech stocks, in particular hurting the Nasdaq, while other stocks that would benefit from a wider economic recovery have seen gains.
That dynamic continued even after Powell spoke, with the Nasdaq posting a slight gain and some tech stocks closing lower.
Disney finished 0.5 percent higher after announcing it was aiming to reopen Disneyland in California at limited capacity in late April.
In Europe, traders said there were also continuing concerns over AstraZeneca's Covid vaccine shot, which many EU countries have suspended pending results of a probe into blood clot incidents.
In a newspaper article Wednesday, the UK's health minister said the jab was safe and there was no evidence of a health risk.
Oil prices meanwhile dropped by more than one percent after a surprise build in US stockpiles, before regaining ground.
Oil markets and the world economy are recovering from the massive collapse in demand caused by the coronavirus pandemic, the International Energy Agency said in a report Wednesday.
- Key figures around 2045 GMT -
New York - Dow: UP 0.6 percent at 33,015.37 (close)
New York - S&P 500: UP 0.3 percent at 3,974.12 (close)
New York - Nasdaq: UP 0.4 percent at 13,525.20 (close)
EURO STOXX 50: FLAT at 3,849.74 (close)
London - FTSE 100: DOWN 0.6 percent at 6,762.67 (close)
Frankfurt - DAX 30: UP 0.3 percent at 14,596.61 (close)
Paris - CAC 40: FLAT at 6,054.82 (close)
Tokyo - Nikkei 225: FLAT at 29,914.33 (close)
Hong Kong - Hang Seng: FLAT at 29,034.12 (close)
Shanghai - Composite: FLAT at 3,445.55 (close)
Euro/dollar: UP at $1.1981 from $1.1902 at 2100 GMT
Pound/dollar: UP at $1.3970 from $1.3889
Euro/pound: UP at 85.77 pence from 85.66 pence
Dollar/yen: DOWN at 108.82 yen from 109.00 yen
Brent North Sea crude: DOWN 0.6 percent at $67.97 per barrel
West Texas Intermediate: DOWN 0.4 percent at $64.54 per barrel