* Dollar index up nearly 1% this week
* Yen, Swiss franc sold as investors seek riskier assets
* Kiwi holds gains as investors trim bets on negative rates
* Graphic: World FX rates in 2020 https://tmsnrt.rs/2RBWI5E
By Tom Westbrook
SYDNEY, Nov 12 (Reuters) - The dollar held broad gains on
Thursday as investors adjusted some of their bullish
expectations about a COVID-19 vaccine, tempering a recent rally
in risk assets but keeping enough confidence to support the
greenback against other safe-havens.
The dollar index USD= sat just below a one-week high hit
overnight and the dollar stood close to a one-week top against
the Swiss franc CHF= and a three-week peak against the yen.
The yen, a popular vehicle for bets against the dollar, is
now at 105.41 per dollar, some 2% below an eight-month high it
hit against the greenback last week, when Joe Biden's lead in
the U.S. election spurred a wave of dollar selling.
The euro EUR= slipped 0.3% overnight after the European
Central Bank said it would focus on bond buying and cheap loans
to boost pandemic-wrecked economies, while the British pound
GBP= was lower as Brexit trade talks dragged on. GBP/
Only in the Antipodes was the dollar weaker or steady, after
the kiwi leapt following an upward adjustment in the Reserve
Bank of New Zealand's "unconstrained" cash rate projection,
which prompted traders to trim expectations for negative rates.
"I think we had a speculative market that was increasingly
comfortable being short U.S. dollars," said National Australia
Bank's head of foreign exchange strategy, Ray Attril.
"Then we had the vaccine news and a big spike in U.S. bond
yields, which I think just acted as a little bit of a check on
unbridled U.S. dollar bearishness," he said.
"A lot of positions probably got squeezed. I think it was a
condition of the market rather than a strong fundamental
response or a change of thinking about the U.S. dollar."
Against a basket of currencies, the dollar fell more than
10% from a March peak to the 10-week low hit on Monday. It has
since rallied nearly 1%, mostly thanks to safe-haven selling
after Pfizer announced it had a working virus vaccine.
The dollar's decline had been predicated on crumbling U.S.
bond yields, as the Federal Reserve promises low rates for a
long time, and hopes for a global recovery that would lift other
currencies.
OCBC strategist Terence Wu in Singapore said that new
drivers might now need to be found to send the dollar any lower.
"With the broad dollar in a consolidative mode, the posture
for USD/CNH may also be sideways in the near-term. These factors
play into limited downside for USD-Asian pairs in the
near-term," he said in a note.
In early Asia trade, the Chinese yuan CNH= was a fraction
firmer offshore at 6.6121 per dollar and other majors hung on
where they left off the New York session.
The Australian dollar AUD=D3 was steady at $0.7281 and
sterling GBP= nursed a 0.4% overnight loss at $1.3220.
The New Zealand dollar NZD=D3 gained a fraction to re-test
its Wednesday highs after Bloomberg reported that improved
economic performance had changed the central bank's thinking.
"Less stimulus is required than we thought in August, but
still a substantial amount of stimulus," RBNZ Assistant Governor
Christian Hawkesby told Bloomberg in an interview.
Kiwi bond yields surged on Wednesday as investors swiftly
priced out expectations of negative rates. NZD/
The shift also sent the Australian dollar to a six-month low
against the kiwi AUDNZD= .
"The pair looks heavy and at risk of further downside," said
Chris Weston, head of research at broker Pepperstone in
Melbourne.