Dollar rallies as risk appetite dims, after Yellen's comments on rates



* Treasury's Yellen says U.S. interest rates may need to rise

* Commodity currencies slump against the dollar

* Ethereum, dogecoin hit record highs

* Graphic: World FX rates Link

By Gertrude Chavez-Dreyfuss

NEW YORK, May 4 (Reuters) - The dollar hit a two-week high on Tuesday, as risk appetite faded amid a sell-off in stocks, with U.S. Treasury Secretary Janet Yellen's comments saying interest rates may need to rise to prevent the American economy from overheating also supporting the greenback.

Yellen, in prepared remarks on Tuesday, made the comment as more of U.S. President Joe Biden's economic investment programs come on line. She did say that the additional spending was small compared to the relative size of the economy.

The dollar's safe-haven appeal received a further boost as the Nasdaq fell more than 2% .IXIC , the S&P more than 1% .SPX and the Dow Jones Industrial Average a less steep 0.3% .DJI , and as Treasury yields declined.

Analysts said much of the good news on the economy has likely been priced in by the market.

"After improving dramatically through the first quarter, U.S. economic expectations have converged with reality, meaning that surprises are no longer skewed toward the positive," said Karl Schamotta, chief market strategist at Cambridge Global Payments in Toronto.

"For many investors and momentum traders, some rebalancing, away from risk-sensitive currencies and toward havens, is making a lot of sense at this juncture," he added.

Tuesday's bounce reversed losses sustained on Monday after a disappointing U.S. manufacturing survey report, leaving the dollar 1% above a one-month low struck last week.

The dollar index =USD , which measures the dollar's value against a basket of other major currencies, climbed 0.3% to 91.278. It fell more than 2% in April.

"There is no consensus right now on what will happen to the dollar for the rest of the year, as there was at the start," Tempus Inc said in its latest research note.

"While some traders see the U.S. dollar with room to grow because of bond yields going higher in the future as inflation expectations grow, others believe the buck is now overvalued and will only keep dwindling as the rest of the world successfully plays catch-up."

The U.S. dollar gained 0.8% against the Australian dollar to US$0.7704 AUD=D3 and 0.9% versus the New Zealand dollar NZD=D3 to US$0.7138, even though commodity prices were generally firmer across the board.

The euro fell 0.4% against the dollar to $1.2013 EUR=EBS . Against the yen, the dollar rose 0.2% to 109.32 yen JPY=EBS .

Sterling GBP=D3 dipped 0.1% to $1.3881 ahead of a Bank of England meeting on Thursday, which may announce a slowdown in its bond buying program as the vaccine rollout bolsters Britain's economy.

In the cryptocurrency sector, ethereum ETH=BTSP powered to another record peak of $3,530 on Tuesday, amid increasing institutional interest. It was last down 1.7% at $3,370.

Dogecoin, created as a joke for early crypto adopters, hit an all-time high of US$0.5922. It was last up 36% at US$0.5549, according to CoinGecko.com.

========================================================

Currency bid prices at 3:35PM (1935 GMT) Description

RIC

Last

U.S. Close Pct Change

YTD Pct

High Bid

Low Bid

Previous

Change

Session

Dollar index

=USD

91.2820

90.9910

+0.33%

1.446%

+91.4030

+90.9850 Euro/Dollar

EUR=EBS

$1.2013

$1.2063

-0.42%

-1.68%

+$1.2063

+$1.1999 Dollar/Yen

JPY=EBS

109.3200

109.0750

+0.23%

+5.81%

+109.4800 +109.0450 Euro/Yen

EURJPY=

131.32

131.57

-0.19%

+3.47%

+131.6300 +131.1600 Dollar/Swiss

CHF=EBS

0.9137

0.9113

+0.26%

+3.28%

+0.9160

+0.9115 Sterling/Dollar GBP=D3

$1.3887

$1.3909

-0.18%

+1.62%

+$1.3908

+$1.3840 Dollar/Canadian CAD=D3

1.2306

1.2278

+0.23%

-3.36%

+1.2352

+1.2276 Aussie/Dollar

AUD=D3

$0.7707

$0.7764

-0.75%

+0.18%

+$0.7763

+$0.7675 Euro/Swiss

EURCHF=

1.0976

1.0990

-0.13%

+1.56%

+1.1010

+1.0968 Euro/Sterling

EURGBP=

0.8650

0.8673

-0.27%

-3.21%

+0.8689

+0.8646 NZ

NZD=D3

$0.7139

$0.7200

-0.88%

-0.61%

+$0.7202

+$0.7116 Dollar/Dollar

Dollar/Norway

NOK=D3

8.3345

8.2830

+0.69%

-2.87%

+8.3610

+8.3040 Euro/Norway

EURNOK=

10.0130

9.9889

+0.24%

-4.33%

+10.0450

+9.9772 Dollar/Sweden

SEK=

8.4843

8.4083

+0.43%

+3.51%

+8.4978

+8.4134 Euro/Sweden

EURSEK=

10.1926

10.1493

+0.43%

+1.15%

+10.1991

+10.1498



World FX rates Link
USD positions Link



Reporting by Gertrude Chavez-Dreyfuss: Editing by Jonathan Oatis and Alistair Bell

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