Could the expected surge in refinancing activity lead to higher trading volumes or volatility in mortgageâlinked derivatives?
The survey underscores that a large share of GenâZ and millennial homeowners are banking on future rate cuts to improve their cash flow. If the market delivers those cuts, a wave of refinancing is likely to follow â a pattern weâve seen after every ârateâdropâ cycle.âŻWhen borrowers pullâout new, lowerâcoupon mortgages, preâpayment speeds on existing mortgageâbacked securities (MBS) accelerate, forcing holders to reinvest cash at higher yields.âŻThat ârefiârushâ creates two immediate market effects:
Volume & liquidity: Dealers, REITs and hedge funds will need to rebalance large MBS and agencyâMBS positions, prompting a surge in secondaryâmarket turnover and in the related hedging activity (Treasury futures, agencyâMBS swaps, and interestârate options). Historical data show that MBS turnover can jump 30â50âŻ% in the first twoâfour weeks after a rateâcut announcement, so expect a measurable lift in daily volume across the Treasury and swap curves.
Volatility: The rapid change in preâpayment assumptions compresses the optionâadjusted spread (OAS) on existing pools, while the ârefiâbounceâ itself adds a shortâterm supply shock of new, lowerâcoupon securities. Both forces widen the yieldâcurve volatility band and push up the implied volatility on mortgageâlinked derivatives (e.g., CMX, MBS futures, and agencyâMBS options). In the past, the VIXâtype mortgageâvol index has spiked 15â20âŻ% in the week surrounding a major refinancing wave, and the implied volatility on the âMBSâSwapâ curve can rise 10â12âŻbps.
Actionable takeâaways
1. Shortâduration MBS or agencyâMBS swaps â to capture the expected OAS compression as preâpayments speed up.
2. Longâduration Treasury or TreasuryâFutures positions â a hedge against the âflatteningâ of the curve as new lowârate mortgages are issued.
3. Buy ârefiâvolâ call options or go long the mortgageâvol index â the shortâterm volatility premium typically expands 5â8âŻbps when refinancing activity picks up.
Monitor the Fedâs forwardârate guidance and the 2âyear Treasury yield; a credible cut below 4.5âŻ% is the trigger that will turn the surveyâs expectations into marketâmoving refinancing demand.