(Bloomberg) -- Argentine bonds are among the biggest gainers in emerging markets Monday after the ruling Peronist bloc coalesced around the centrist Economy Minister Sergio Massa as its main candidate.Most Read from BloombergStudent Loan-Relief Backers Warn Biden ‘Failure Isn’t an Option’Wagner Chief Lands in Belarus as Putin Says ‘Civil War’ AvertedUBS Preparing to Cut Over Half of Credit Suisse WorkforcePickleball Injuries May Cost Americans Nearly $400 Million This Year, According to UBSPutin