Spread closes seven points up at 215
Yield up to 3.86% from 3.82%23 January, 18:40
The yield was 3.86%, up from 3.82% Wednesday.
A narrower spread indicates greater investor confidence in the Italian economy and Rome's ability to pay down its huge debt.
Analysts said investors were responding to poor Chinese economic figures and fears that domestic political infighting could imperil structural reforms as Italy's left-right government embarks on a revamped agenda after a contested deal on a new election law to bring greater stability.
European markets posted mostly minimal changes after a recent string of gains on optimism that the US economy is strong enough to withstand the gradual withdrawal of monetary stimulus.
The Milan bourse closed 0.72% down as banking stocks weakened again.
London was 0.78% down, Frankfurt 0.92% down, Paris 1.02% down and Madrid 0.37% down.
Athens bucked the trend again, though less than recently, by gaining 0.03%.