* U.S. GDP and jobless claims data has little FX impact
* NZ dollar jumps vs dollar, yen
* Dollar down after volatile moves on Geithner remarks
(Recasts, adds comment, updates prices, changes byline and dateline, previous LONDON)
By Nick Olivari
NEW YORK, March 26 (Reuters) - The dollar fell against most major currencies on Thursday, with investors reluctant to take big bets as U.S. Treasury Timothy Geithner was due to make another appearance before a Congressional committee.
The market showed little reaction to Geithner's prepared remarks for the hearing before the House of Representatives Financial Services Committee, which is about financial regulation reform. Investors were waiting for the question and answer session that was to be part of the hearing, which is due to start at 10 a.m. EDT (1400 GMT).
"There is tremendous uncertainty over additional comments clarifying the U.S. Treasury Secretary's position over studying the replacement of the U.S. dollar as a reserve currency," said Andrew Busch, global FX strategist at BMO Capital Markets in Chicago.
The dollar swung wildly on Wednesday after Geithner said he was open to expanding the use of the International Monetary Fund's Special Drawing Rights (SDRs).
New Zealand's dollar gained roughly 2 percent against the U.S. dollar and yen, lifting other yen crosses, as investors searching for yield took the view that interest rates there were at or very near the bottom.
Data on U.S. Gross Domestic Product and weekly jobless claims had little impact on trading. [
] and [ ]In early New York trade, the euro was up 0.2 percent at $1.3605 <EUR=>. A broadly sliding yen pushed the dollar up 0.7 percent to 98.22 yen <JPY=>, while the euro rose 0.9 percent to 133.65 yen <EURJPY=>
The yen has slid against high-yielding currencies in the past few weeks as gains in global stock markets have pointed to an improvement in investors' risk appetite.
But the focus remained on the greenback after the U.S. currency was rocked after Geithner's comments on Wednesday. Sterling rose 0.3 percent against the dollar <GBP=>, while the dollar was down 0.7 percent against the Norwegian crown <NOK=>.
Geithner's comments were initially interpreted as an endorsement of China's proposal this week to eventually replace the dollar as the world's reserve currency with SDRs. [
]That pushed the dollar lower but it then regained ground after he said the dollar would keep its status as the top reserve currency for a long time. [
]Analysts said the comments had, by accident or design, opened a debate on how the dollar will cope with massive fiscal stimulus pumping into the U.S. economy.
KIWI SURGES
The kiwi surged to its highest in more than two months at $0.5801 <NZD=> and touched around more than four-month peak of 57.04 yen <NZDJPY=R>, according to Reuters data, as New Zealand government debt yields surged in a sign investors were reining in expectations for lower rates.
New Zealand's cash rate stands at 3 percent and the central bank has signalled it does not expect to reduce rates much further.
"While yield differentials have narrowed, you are also buying at lower levels so it is slightly more attractive than in the past," said John McCarthy, director of foreign exchange at ING Capital Markets in New York. "But the idea of going to re-enter the yen to borrow is dead. It's more bearish on the yen, bullish on the aussie and the kiwi."
The Australian dollar was down around 1.4 percent against the New Zealand dollar at NZ$1.2135 <AUDNZD=R>, hovering near a 10-week low and adding to broad strength in the kiwi. The Australian dollar was up 1.5 percent against the yen at 69.01 <AUDJPY=R>.
But some analysts were sceptical on the rate outlook.
"Since the RBNZ took rates down to 3 percent, markets have priced out more easing. We view this as misplaced, with Q4 GDP due tonight set to show a large -1.1 percent Q/Q fall, intensifying New Zealand's plight," ING said in a note to clients. (Additional reporting by Veronica Brown in London, Editing by Chizu Nomiyama)