The Australian and New Zealand dollars slipped to one-week lows on the euro on Wednesday as a surge in German long-dated yields sparked a rally in the common currency, a move that also pushed local bond yields higher. The greenback did get a nudge higher after the US House of Representatives approved a long-awaited tax bill, but forex traders were not as excited as their equity counterparts on doubts over whether the tax cuts would really boost US growth.
The New Zealand dollar hit a one-week low of $0.6966 against its US counterpart after dairy prices fell overnight in a global auction, confounding expectations for a rise. Dairy is New Zealand's top export earner. Against the New Zealand dollar, the euro held near its highest since mid-December after rising 0.8 percent the previous session.
The Aussie fared better on the US dollar. It held at $0.7662, not too far from a recent two-month top of $0.7694 touched last week. New Zealand government bonds slipped, sending yields about 3 basis points higher on the long-end of the curve.
Australian government bond futures eased too, with the three-year bond contract down 3 ticks at 97.845. The 10-year contract fell 6 ticks to 97.3350. Germany, the eurozone's benchmark government bond issuer, said on Tuesday it planned to sell 16 billion euros ($19 bln) of 30-year Bunds, up from around 11 billion euros in 2017. That was the only section of the curve where supply is expected to rise in 2018.
In response, long-dated Bund yields jumped and sparked a global curve steepening. Yields on Australian 30-year bonds jumped to a level not seen since mid-November, while those on the 10-year paper rose to a 1-1/2 month top. The Bund sell-off sent the euro higher across the board.