Irish, Italian and Spanish yields fell to new record lows this morning as peripheral euro zone debt caught up with yesterday's rally in core bonds after the European Central Bank's €1 trillion asset purchases got underway.
Portuguese yields were also within sight of their troughs on the prospect of national central banks from the euro zone's periphery will be more active in the market.
This comes after the programme's debut was dominated by buying by the region's core economies.
"Everybody is trying to anticipate the flows. The ECB and national central banks came into the market yesterday so people are just buying this morning to try and sell to the ECB at a higher price," one euro zone bonds dealer said.
Irish 10-year bond yields were 3 basis points lower at 0.811%. Italian and Spanish 10-year yields fell 5 basis points to 1.238%and 1.179% respectively.
Portuguese yields were down 5 basis points at 1.72%, not far from an all-time low of 1.674% hit on Friday.
ECB and national central bank buying was seen as modest yesterday across two to 30-year maturities but traders expected the pace to pick up in coming days if it is to meet the estimated monthly target of €45 billion of sovereign bonds.
Yields on top-rated bonds were also a whisker from their lows, with German 10-year yields - which set the benchmark for euro zone borrowing costs - 2 basis points lower at 0.288%.
Greece remained the exception, with its debt yields flat to slightly higher after a euro zone finance ministers' meeting yesterday to discuss whether to provide Athens with further funding in exchange for delivering reforms ended without a breakthrough.
A technical team from Greece will now open talks about the reforms this week with experts from international lenders, EU officials said.
But blunt comments from Greek Finance Minister Yanis Varoufakis, who described his country as the most bankrupt in the world, seemed to indicate an agreement could still be a long way off.
European leaders knew all along that Athens would never repay its debts, he said in comments that sparked a backlash in the German media today.