* 15-yr auction demand strong, yields move further up
* Plan three bond auctions in May, adds April sale
* Markets brace for new supply
(Releads with auction)
By Jason Hovet
PRAGUE, April 1 (Reuters) - The Czech Republic sold more than offered in an auction of its 4.70 percent coupon, 15-year bond on Wednesday and accelerated its borrowing plans, scooping up funds despite higher yields.
The Czech Finance Ministry sold 11.81 billion crowns' ($572.2 million) worth of the bonds due 2022 <CZ1001945=> <CZ15YT=RR> in the first, competitive round of bidding.
The average yield rose to 6.13 percent from 5.329 percent at a June 2008 auction, while demand for the issue totalled 13.59 billion crowns compared with 6.8 billion offered in the first round.
Earlier in the day, the Finance Ministry said it would offer 21 billion crowns' ($1.02 billion) worth of state bonds in May auctions. It will also offer an additional 7 billion worth of bonds in April, on top of 15 billion crowns already planned, through an auction of its 10-year bond due 2019.
"The demand is more than I would expect," said Komercni Banka dealer Dalimil Vyskovsky. "But you still see rising yields, so I'm not sure we can call it a positive. And when you see the supply for the next two months, that plays into asset swaps widening."
The Czech Republic has picked up the pace of borrowing in the past month after a cautious approach since last autumn, when central Europe's markets fell victim to the widening financial crisis.
The ministry put on hold a planned eurobond issue in February because widening credit default swap prices in the region had forced debt spreads wider.
But last month it sold 35.4 billion crowns of bonds in March at three domestic auctions, almost a third more than planned.
Finance Minister Miroslav Kalousek said political turmoil might also pose risks to the Czech Republic's financing costs after an opposition-led no-confidence vote toppled Prime Minister Mirek Topolanek's government last week.
"When an economic crisis is compounded by the opposition to include a political crisis, the opposition must realise that that it complicates problems with financing debt, as well as maintenance costs," he told Reuters.
Czech yields had already been steadily rising, and dealers said the new issuance plans could push them even higher.
"I'm afraid on the long-end there will not be such demand," said a local fund manager. "The new calendar (includes) quite a lot, so I would expect spreads to widen."
The 15-year bond <CZ15YT=RR> was quoted 87.50/89.00, yielding 6.085/5.905 percent, by 1125 GMT. It traded with an asset swap spread of 191.5 basis points, down from 205.4 before the auction but compared with 107 at the start of the year.
Analysts also the government's fall could lead to more borrowing after the main political parties began talks on new economic stimulus measures following the government's fall and a deal among parties to push for early elections in October.
The government has already adopted some stimulus measures and expects a budget deficit of around 4 percent of GDP.
The opposition introduced a package on Tuesday of 15 measures it says will cost 44 billion crowns ($2.13 billion) annually over the next three years, or around 1.1 percent of gross domestic product. For a TABLE with May debt supply click on...... [
] For a TABLE with Wednesday's auction click on.. [ ] (Reporting by Jason Hovet; Editing by David Stamp))