Newly appointed Prime Minister Mario Monti gained final approval last week for a ?30 billion package of austerity measures.
NEW YORK (CNNMoney) -- Weak demand for long-term Italian bonds at its final auction of the year Thursday sent the yield of the country's 10-year debt above the troubling 7% level.
Overall, the auction sold just over €7 billion, or about $9 billion, of long-term bonds, out of an offering range of between €5 billion to €8.5 billion.
Italy will end up paying slightly less for these bonds than at its previous auction a month ago. The auction of 10-year bonds drew a yield of 6.98%, down from 7.56%. But in trading Thursday, the yield on the Italian 10-year edged up to 7.07% from just under 7% the previous day.
A yield of 7% or more for 10-year bonds sets off warning bells among investors since that's widely seen as an unsustainable level that can force a country to seek a bailout, as was the case in Portugal, Ireland and Greece.
Italian yields first topped 7% in November amid fears that Italy could be the next to need a bailout. But yields dropped sharply in the first week of December on hopes that a "fiscal pact" reached by European leaders would become the much needed solution to the long-running debt crisis.
They edged back above the 7% mark a week ago as worries about Italy's bloated debt resurfaced, even as Prime Minister Mario Monti secured final approval for a €30 billion austerity plan.
As the eurozone's third-largest economy, Italy is considered too big to fail. At the same time, with debts of €1.9 trillion, the country may also be too big to bail out, leaving investors on edge.
On the bright side, yields on shorter-dated debt showed marked improvement. The auction of 3-year bonds yielded 5.62%, down from from 7.89% a month ago.
Hopes for a stronger long-term auction were raised Wednesday when the yield for the 6 month notes dropped by more than half to 3.278% from 6.608% a month ago, while the 2-year yield dropped to 4.853% from 7.814%
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