LONDON - The dollar slipped on Friday after top U.S. power brokers including the government and banks threw a lifeline to struggling regional lender First Republic Bank, which returned some confidence to investors.

The rescue of First Republic on Thursday boosted risk appetite globally on Friday as concerns about global banks eased, making way for surges in the Australian and New Zealand dollars.

This week has revived memories of the 2008 financial crisis, in which dozens of institutions failed or were bailed out with billions of dollars of government and central bank money.

Three smaller U.S. lenders including First Republic have had regulators and other banks step in to prop them up, while in Europe, Credit Suisse became the first major global bank since the financial crisis to get an emergency lifeline, from the Swiss central bank, restoring investor confidence and stopping a haemorrhage in customer deposits.

With measures in place to shore up any obviously struggling lenders and assurances from the likes of the European Central Bank that the euro zone banking system is robust, investors felt emboldened enough to sell the safe-haven U.S. dollar.

"As long as we don't get any other negative headlines around the banking sector, or anyone collapsing, we might just see a bit of risk-on, equity heading higher, Treasuries giving up some of their gains and the dollar rolling over in a combination of a relief rally and a position-squeeze," TraderX strategist Michael Brown said.

The U.S. dollar index fell 0.2% to 104.2, under pressure mostly from the strength in the yen.


Meanwhile, the European Central Bank (ECB) delivered a hefty 50-basis-point rate rise at its policy meeting on Thursday.

ECB policymakers, led by President Christine Lagarde, sought to reassure investors that euro zone banks were resilient and that if anything, higher rates should bolster their margins.

Had the ECB proceeded with a smaller rate hike, or even no increase at all, in light of the turmoil in the banking sector this week, that could have seriously spooked investors and prompted a far bigger sell-off, analysts said.

Money markets are showing a much tamer outlook for interest rates than they have done of late, but with core inflation still rising and proving stubborn, there would be little justification for the central bank to refrain from more rate hikes, analysts said.

Indeed, ECB policymaker Peter Kazimir and his peer, Gediminas Simkus, on Friday said the bank needed to keep raising rates for this reason.

The euro was last up 0.1% against the dollar at $1.0618, and was flat against the pound at 87.59 pence. So far this week, the euro has struggled to make any headway against the dollar and has lost 0.8% against sterling.

Sterling rose 0.17% to $1.213, while the Swiss franc rose 0.1%. Earlier in the week, the Swissie plunged by the most against the dollar in a day since 2015, when the Swiss central bank loosened its currency peg.

The Japanese yen, which tends to benefit in times of extreme market volatility or stress, rose. It was last up 1% at 132.3 per dollar, set for a weekly rise of more than 1%.

Japan's Ministry of Finance, Financial Services Agency and Bank of Japan officials met on Friday evening to discuss financial markets.

Masato Kanda, vice finance minister for international affairs, told reporters after the trilateral meeting that the government, the central bank and the banking watchdog would coordinate to ensure the stability of the financial system

The Australian dollar, which often outperforms when investors are feeling optimistic, rose 0.5% to $0.6693, while the kiwi rose 0.7% to $0.6241.

The Federal Reserve's monetary policy meeting next week now moves to centre stage. Some investors are hoping that the Fed could slow down on its aggressive rate-hike campaign in a bid to ease the stress on the financial sector.

(Additional reporting by Rae Wee in Singapore; Editing by Kirsten Donovan and Susan Fenton)