Companies are flocking to the US leveraged loan market with offerings to reprice large chunks of existing debt, tapping strong investor demand to reduce borrowing costs. At least six companies began marketing loan repricings on Tuesday as borrowers returned from a late-summer lull.

Major deals include a $2.9 billion offering from Global Medical Response Inc. and a $2.5 billion offering from Heartland Dental LLC. The flurry of activity signals renewed confidence in the credit markets as issuers move quickly to lock in lower rates before potential market shifts.

Bankers reported robust investor appetite for the paper, allowing borrowers to tighten pricing significantly compared to original terms. The wave of repricings follows a period of relative quiet in August and suggests the leveraged loan market remains a primary venue for corporate refinancing.