Episode summary
How AI Could Simplify the Mortgage Market
Thoughts on the Market (Morgan Stanley)
· · 8 min · Hosts: Jeff Adelson, Jay Bacow
Summary
AI could make the U.S. mortgage market much more responsive by turning a homeowner’s phone into an active refinancing agent. The guest argues that an AI agent could monitor rates, compare dozens of lenders, upload documents, and push more borrowers to refinance when the economics improve. That matters because borrower behavior has historically been sluggish: only about 30% of borrowers who could cut their rate by 100 basis points did so in a given year, and fewer than half shopped with more than one lender.
For mortgage investors, the guest says faster borrower reactions would mean higher prepayments, shorter durations, and potentially wider mortgage spreads, with the base case implying about 10 basis points of spread widening. If rates rally 100 basis points, the guest expects refinance volumes could rise about 40% versus current expectations.
For lenders, the host argues the bigger market could lift originations from about $2 trillion annually toward a normalized $2.5 trillion, or even $3 trillion in a bull case. But AI could also intensify competition, compress gain-on-sale margins, and shift the industry toward more operating leverage rather than purely higher profits.
Key takeaways
- The guest says AI agents could let borrowers compare many lenders instantly and refinance with far less friction.
- The guest estimates only about 30% of eligible borrowers historically refi after a 100 basis point rate drop.
- The guest expects mortgage spreads could widen by about 10 basis points because faster prepayment risk is priced more aggressively.
- The host says annual originations are around $2 trillion now versus roughly $2.5 trillion normalized, with a $3 trillion bull case.
- The guest says the biggest lenders could gain operating leverage, but competition may pressure gain-on-sale margins.
Notable quotes
“An agent on your phone could just monitor mortgage rates, compare lenders, reduce the paperwork, and make homeowners more likely to refinance”
“Historically, only about 30% of borrowers that had the ability to lower their mortgage rate by 100 basis points did so in a given year”
“those models are likely to understate future prepayments. If you get a faster response, it's going to make mortgages more negatively convex”
“We're sitting at about $2 trillion of mortgage originations per year. As we think about normalized, we think that's somewhere in the order around $2.5 trillion”
“faster refinancing, it's likely to make the mortgage market more responsive when rates fall and effects that are going to reach well beyond the borrower”
How the episode opens
Welcome to Thoughts on the Market. I'm Jeff Add, Morgan Stanley's US consumer finance analyst.
And I'm Jay Bau, co-head of securitized products research, also working at Morgan Stanley. Today, how AI could change the way Americans shop for, manage, and refinance their mortgages. It's Monday, August 10th at 10 a.m.
in New York. The US mortgage market is worth more than 14 trillion, and its performance ultimately depends on the choices millions of homeowners make. Today, refinancing still means shopping around, comparing offers, and working through a lot of paperwork.
AI could make that process much easier, especially when rates begin to fall. Jay, you led this work in our AI mortgage bluepaper. What's the main way AI could change the mortgage market, and why does the borrower matter so much?
So, we think the biggest change would be borrower adoption of using AI agents to manage their personal finance. An agent on your phone could just monitor mortgage rates, compare lenders, reduce the paperwork, and make homeowners more likely to refinance when the economics work. Let's think about what that could be.
Historically, only about 30% of borrowers that had the ability to lower their mortgage rate by 100 basis points did so in a given year. When a borrower went to get a mortgage quote, less than half of them asked more than one lender for a quote, that agent could go reach out to 30 lenders, ask for a variety of different mortgages, could upload all the documents, could do this all effectively, instantaneously, present the homeowner with the best option, allow the homeowner to effectively click a button and refinance. We think this could be pretty transformative for the mortgage market.
Now, as we think about this transformation, Jay, mortgage investors still rely heavily on past refinancing behavior trends.
From the episode’s captions: roughly the first two minutes, lightly cleaned. Keep watching on YouTube →
Topics
- ai in mortgages
- refinancing rates
- mortgage underwriting paperwork
- borrower adoption of ai agents
- mortgage-backed securities valuation
Companies and tickers mentioned
- MS
- Morgan Stanley
Watch the episode
Watch “How AI Could Simplify the Mortgage Market” on YouTube
Summary, takeaways and quote selection by Octagon. Quotes are short excerpts; the full conversation is in the episode.
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