Euro Markets: EUAs give up €2 intraday gain amid rising selling as gas wavers

European carbon allowance prices managed to record a modest daily increase on Thursday after rising almost €2.00 to set a 31-month high before giving up all their gains having breached a technical channel, as a brief turnaround in the gas market in the middle of the day encouraged sellers, while UKA prices also hit another 33-month peak and retreated.