Refinance-ready borrowers are piling up
That’s a market sitting in a holding pattern — but one where a much bigger share of borrowers than a few years ago would actually move if rates dropped meaningfully. It’s a dynamic brokers are already competing over: UWM’s incentive push toward VA and FHA refinances raised eyebrows among mortgage-backed securities investors last year, a reminder that origination-side pricing decisions and MBS investor concerns are more connected than most loan officers might assume.
Why bond investors are watching prepayment speeds again
Mortgage bonds, particularly those pooled by Fannie Mae and Freddie Mac, have historically paid investors a premium over Treasurys specifically because of prepayment risk, the chance a borrower pays off a loan early, usually by refinancing, and hands the investor their principal back sooner than expected. The current coupon rate for 30-year agency mortgage bonds sits around 5.8%, compared with just under 5% for 10-year Treasurys.
That premium barely mattered while rates were near two-decade highs; nobody holding a 3% mortgage was refinancing into a 7% one. But with average 30-year rates hovering in the high-6% range, according to Freddie Mac’s weekly Primary Mortgage Market Survey, a growing share of borrowers now hold rates close enough to today’s market that a meaningful drop could set off a genuine wave of payoffs.
Harley Bassman, the veteran strategist who created the MOVE index and writes under the banner “The Convexity Maven,” put the trade-off bluntly in the Journal’s report: mortgage bonds let investors “get more yield than Treasurys,” but the cost is losing more when rates climb and gaining less when they fall.
Read next: Ackman: Prepayment penalties on Fannie, Freddie mortgages could bring rates lower
