Advent International and Bain Capital, which carried out one of the largest buyout deals since the financial crisis with the acquisition of WorldPay, have taken advantage of improved debt market conditions by securing improved terms from their banks.

EQT Partners and GIC, the Singapore-based sovereign wealth fund, have also seized upon the more receptive lending market by repricing the loans backing their acquisition of Springer Science+Business Media, according to two sources familiar with the matter.