Market Pulse

Jennifer Henry of Equifax sits down with Andrew Davidson, president of Andrew Davidson & Co. and a leading voice in mortgage analytics, to unpack one of the most misunderstood elements of housing finance: credit scores. They explore what a credit score actually measures, why different models and bureaus produce different results, how VantageScore’s adoption could reshape risk evaluation, and what investors, lenders, and consumers need to know as the industry shifts toward new data sources and scoring frameworks.

What is a credit score and what does it measure?
A credit score is a model applied to a specific credit file to predict the likelihood that a borrower will become delinquent. It is based only on the data included in that credit file, not the consumer’s entire financial life.

Why do credit scores differ between bureaus or scoring companies?
Scores vary because:
  • Each bureau holds different underlying data.
  • Scoring companies group data differently based on their models.
  • The same borrower may fall into different “risk buckets” depending on how the model evaluates attributes (e.g., payment history, utilization, depth of file).
Different models may both predict risk effectively yet categorize borrowers differently.

How does adopting multiple scores (e.g., VantageScore + FICO) affect the industry?
Having multiple accepted scores encourages deeper analysis of:
  • How risk is grouped and measured
  • Which score is most predictive for different loan types
  • How investors calibrate pricing and performance expectations
This shift pushes the industry to understand why scores differ, not just rely on a single number.

How could alternatives to tri-merge (bi-merge or single file) impact lending decisions?
Using fewer files may lower cost and streamline operations, but may reduce visibility into borrower behavior—especially for thin-file or non-traditional applicants. More data generally improves risk grouping.

How does alternative data (e.g., utilities, telco, rental history) influence credit scoring?
Alternative data helps:
  • Create a more complete financial picture
  • Surface strong repayment behavior not shown on traditional trade lines
  • Improve risk assessments for people with non-traditional income patterns or limited credit history
However, adding new data is not enough. Lenders and investors must also understand how that data influences models.

Where can listeners learn more?
Andrew Davidson & Co: ad-co.com
Financial Lifecycle Education (FiCycle): ficycle.org

What is Market Pulse?

Market Pulse is a monthly podcast by Equifax, in partnership with Moody’s Analytics. Equifax hosts bring you interviews with industry experts on the latest economic and credit insights that can help drive better business decisions. Whether you’re in financial, mortgage, auto or another service industry, we help make sense of the latest economic conditions that impact you. This podcast series supplements our Market Pulse webinars, which occur on the first Thursday of each month.

Welcome to a special edition

of Market Pulse from Equifax,

where we break down what's shaping the

mortgage industry today and what happens

next.

Welcome to a Lab edition of the

Equifax Market Pulse podcast

recorded at NBA Annual25 in

Las Vegas. I'm Jennifer Henry.

I'm the managing director and Chief

Strategy Officer for government credit

capital markets and housing

strategy at Equifax.

I'm joined today by Andrew Davidson,

President of Andrew Davidson and Company

one of the nation's foremost experts on

mortgage analytics, credit

risks and capital markets,

and also the founder of Financial

Lifecycle Education Companies.

It's great to have you here, Andy.

Oh, Jennifer, it's great

to be here with you today.

All right, Andy, to set the

stage for our listeners,

could you please start by explaining in

simple terms what a credit score is and

what it aims to measure?

Oh, sure. You know anyway,

thanks for mentioning our not-for-profit

financial life cycle education.

What we've done is combine finance and

mathematics for educating high school

students about financial topics.

And one of the areas we've been

working on recently is credit scores.

And incidentally just Friday we,

I was at a math conference basically

talking about a new lesson that we're

creating about how credit scores work.

And what I've learned from that side and

as well as the Andrew Davidson Company

mortgage side,

is that many people don't really

understand what a credit score is.

It's just a number. Mm-Hmm

. To them.

And what we've been trying to do is

delve into what exactly is a credit score

you know, for our mortgage clients

as well as for these students.

And the way I like to think about it

is a credit score is something that's

generated using the data in a data

file and notably only the data

that's in the data file.

And then the credit modeling

companies vantage score and FICO

have done historical analysis of how

people with similar credit files have

performed in the past,

whether or not they've become delinquent

on one or more of their accounts.

Interesting.

And then what happens is they take

that experience and they apply that

model to the data that's in the

credit file now for each individual.

And so once you understand that the credit

score is really a model applied to a

credit file,

you can start to understand a little bit

better the strengths and weaknesses of

that credit score.

That's really interesting. Can you

elaborate a little bit more on that?

So like how do credit scores differ based

upon those different groups of people?

Yeah, so you know,

a lot of people think you have one

credit score and the credit score is

everything to know

about you. But you know,

we now have two different companies

creating credit scores as well.

We have three different bureaus with data.

So the credit score could differ either

based on the data by those credit

bureaus or by which scoring

company that you've used.

And an analogy I like to use is

imagine you're at a company or

two different companies that we're going

to evaluate people based on athletic

ability.

That's interesting.

And one of 'em said we're going

to look primarily at weight.

We'll look at some other things, but

weight is the thing we concentrate on.

And another one says,

height is really the thing that

we determines athletic ability.

And let's say the sport that they chose

to use their scores on or develop their

scores from was throwing a javelin. Okay,

maybe not something everyone

does every day, .

But so they develop a score.

One has more of a weight aspect to it,

the other one has more

of a height aspect to it.

And they both do a really good job of

forecasting how far people can throw a

javelin.

But you can imagine that the score that

is based on weight might have a tall

person and a short person

in the same category, right.

Getting the same javeon distance and

then the one based on height could have a

lighter person and a heavier person

still in that same height category.

And you know, they are going to have

like these different aspects to them.

So they both do a good job of

forecasting javelin throwing,

but let's say you're going to use

it for football or basketball,

it could be that one of those scores is

going to do a lot better than the other.

Right? Because a score isn't just how

well you throw javeon the javelin,

it's also which bucket you were put

in, right? Where you put in a bucket,

other people your same height or you put

in a bucket with other people your same

weight.

And I think that's what people really

haven't understood about credit scores is

that it's all about how the people are

grouped together and how they've come up

with a score for that group, not

just for you individually. That's.

Interesting. So

how do you think that that is

going to impact the industry

now that the FHFA has announced that

they're going to move forward with

acceptance of this

additional credit score,

having vantage now be part of the process?

Yeah, so I think there's sort

of two big issues. One is that,

you know,

people just haven't really started to

focus on this because the process of

adding vantage score has been a lot of

start and stop and there's been other

confusion brought into

that and it's a big effort.

And so people just haven't spent the

time to put in that effort for something

that's not certain yet. But I

think even more fundamentally,

everyone has just viewed credit score as

just a credit score and it's as though

there was only one and as though it was

always correct and that was the credit

score for that person.

And I think this is really going to have

people start to focus more intensely on

what a credit score means,

why you could have different credit

scores from different scoring companies or

why the scores different from scores

calculated on the data from each of

the bureau. And this fundamental

idea that it's data and a model

you know, data, original data

and a model based on that.

And then that model applied to current

data is something people don't really

think about that carefully.

And this is really going to force people

to rethink what a credit score is and

how they use it. And I think

it's going to be a long process.

Yeah. Well that was going to

be my next question is, okay,

so it's announced that effective

immediately the GSEs are going to be

able to accept these new, well at least

Vantage for in addition to the FIO five.

So what is the industry

readiness? Like what do you, you,

you said you think it's

going to take a long time.

Like what do you think readiness is

and what do you think that the industry

needs to be able to get

ready to adopt these scores?

Yeah,

I think it's important to think about

like what do you think of as the industry

and our focus is really primarily

on the investor community and

how they incorporate the data that they

receive from Fannie or Freddy or from

another originator through a trustee

and through a complicated process

into their investment decision.

So on the front end, you know,

it's mostly an operational question

as to whether or not a loan will get

accepted by the GSE and how to transmit

that data for the ultimate investor.

They also have to make decisions

about the risk associated with

that data. And people I say have just

become very comfortable with the idea.

They just have one credit score.

So there's just so many processes

that have to happen first,

the data has to get to the people who

are making these decisions and that means

it's gotta flow through many

different processes. Second,

they need to have models

that they can use on that.

And even as a model provider,

we don't know yet what kind of models

they will need. And it often takes,

you know, months to years for

people to adopt a new model.

And then even beyond that,

people have a certain intuition

from something they've

worked with for years and

years. And developing a new intuition,

a level of comfort with

something new also takes time.

So while it may be mostly in like an

administrative aspect on the origination

side, on the investor side,

it's really a complex process of

information flow modeling and comfort.

And I think all of those

just take a lot of time.

And do you have any perspective on like

what type of information that you think

that the investor community

is lacking at this time?

Yeah, I think so. One is they haven't

really seen the scores live, right?

So there was a data set provided

on Vantage score over a certain

time period, which I

think was very valuable,

but that's not the same as it flowing

through your actual decision process.

The second thing is, as I

sort of mentioned earlier,

I don't think people have really focused

on what a credit score is and why you

could have a vantage score and a

classic FICO score that differ by 50

points, right? And 50 points is a lot.

It could be double the

amount of credit risk.

It could be a five or 10%

change in prepayment speeds.

So understanding that it doesn't

mean one is right and one is wrong,

it's just that there was a different

grouping of people may affect them.

This is further compounded

by lender choice.

So investors are always fearful that

the person selling to them knows more

than they do and is going

to take advantage of them

in what they call adverse

selection. Right? And when

you have adverse selection,

you're going to either say, I'm not

going to participate in that market,

or I'm going to treat things like

they're the worst possible that I could

imagine. and it's people,

it's going to take a while for people

to understand how this lender choice is

working and how much worse

is the performance then if

you were given all of one

score all of the other, or ideally

both, you know, of two, you know,

both scores and these are

just things that are unknown

and investors, you know, they take risk

but they don't like the unknown. Right.

Investors like to know which risks they're

taking and unknown risk is not one of

their favorite things. Yep.

So is there anything that you think that

we could be doing as industry leaders

to bring those groups together

to start sharing information?

Yeah,

I think we really need to open up the

black clocks of what a credit score

is. And it's not like anyone

who's been keeping it a secret.

Mm-Hmm . But it hasn't

really been the focus of education.

Yeah. 'cause people haven't really

needed to know there's one score,

you don't really need to know anything

about it, it just, you get it Right. You.

Didn't need to know. Yeah.

It and it didn't really matter what

that score was 'cause you knew how it

worked. Mm-Hmm . Right.

You know, like even for consumers,

people don't really describe

what a credit score is,

a ranking of log odds ratios.

Mm-Hmm . Right.

Instead they just say, oh, you

know, above this is excellent,

this range is good, this

range is poor. You know,

but investors need to think

about numerically, right?

And then they also need to

have intuition and you know,

I think we need to just start

really educating people.

Like one of the people questions

I ask people is you know,

credit scores are some sort of

measure of risk, maybe a ranking.

How much change in credit score does

it take for the risk to double? Yep.

And I would say almost no one has ever

answered that question correctly when

I've asked them the answer case people

know is around 40 points. Right.

and so if you're looking at credit scores

that might differ by 20 to 40 points,

that could be 50% or you know,

double the amount of risk

if you don't recalibrate.

That's pretty impactful. Yes.

So I'd just shift gears a little bit so

we know that the credit scores are based

upon the underlying data

that's being contributed. Yeah.

So that's the credit data from

Equifax, Experian, and TransUnion.

There's been a lot of pressure in the

market to potentially move from a tri

merge to a buy merge or a

single file credit report.

And you've had the for thought over the

past couple of years to kind of start

looking at that data and to really

understand what the potential

impacts could potentially be or

could be if we were to move to

one of those models.

And I just wanted to get your insights

on what the impacts could be to the

investors, consumers, lenders, and

all of the folks in the process.

Yeah. Just as we were talking about

the difference between, you know,

two different models, the weight

model and the height model.

Mm-Hmm .

The other piece that we talked about in

the definition of a credit score is that

it's based on the data in the credit file.

And originally the credit score companies,

I understand it was sort of had

a regional focus each of them.

And so it was important to combine

them together in order to get sort of a

fuller picture. So the regional

differences are largely gone now.

Mm-Hmm .

But each of the companies has focused

on different types of additional data.

Mm-Hmm .

So we still face the fact that

if you pick data from firm A, B,

or C,

the data in the file that you're using

to calculate the credit score is going to

be different. Right. And so once again,

you can get different credit

scores based on which bureau

and you know,

obviously what we want is to bucket people

or put them in the group that's most

representative of their risk.

We don't want a credit

score that's too high.

'cause You may end up lending to someone

who can't afford that loan and you

don't want a credit score that's too low.

Because it may cost the person

more than it would cost otherwise.

And so bringing in variety of data

sources is actually very useful for that.

Now there may be some situations where

we don't need that much data that the

person has a large thick file at all

three bureaus and you're just not going to

see that much difference.

But as you start to get to borrowers

thinner files or new people you're trying

to bring in where people have

had a credit problem in the past,

the fuller picture may

be more valuable there.

And obviously there's costs

associated with that. And you know,

at some point the market's going to have

to figure out what trade off it wants

between sort of more information

and you know, lower cost. Right.

If you're going to have more

information, it's going to cost you more.

But once again, I think once again,

people haven't really focused on what

the difference is between the credit

bureaus and how they've

operated over time. Yeah.

Now obviously there's people at banks

who are doing credit card lending can go

all of this stuff, you know,

intensely well mm-hmm .

Build their own models.

But most of the investor base certainly

in the securitized market just isn't

that focused on all these details.

So on that note,

the difference in the data from the

credit bureaus is becoming even more

profound because of the director

initiatives to provide more

innovation into the different credit

bureaus.

And I know that we here at Equifax are

really focused on providing alternative

data to the consumers.

And I know our counterparts at Experian

and TransUnion are doing the same.

And I know you've had the opportunity

to look at some of the alternative data,

especially the data coming from

Equifax around telco utility.

And I just wanted to get your

perspective on, you know,

how do you think that that

is impacting borrowers,

especially as we're coming

into these new proposed models?

Yeah. So right now I think

there's an opportunity, right?

So we've been doing one thing the

same way for, you know, many decades.

And if we have to start changing,

I think it's a good time to also

rethink what we're doing and you

know, there's so much more data.

Now the utility data is really great

example and we have a lot of people who

operate in a very different

economy than they used to.

So not everyone has the same job

at the same firm for 20 or 30

years earning a paycheck every other week.

And so as we have people in more

variety of economic circumstances and

we have more data, it would be

useful to bring that in. And,

but we don't think the solution is to

take all of that data and then put it into

one score. Right? So obviously

that would be a useful thing to do,

but that's not really

going to be sufficient.

So we would hope is that in addition

to improved scores with more data and

better data,

we also start to let the investors know

and the credit decision makers know

a little bit more about the underlying

components of how that score was

developed. And the utility data is

like a great opportunity rental data.

There's another one,

there's many places where people

who might have had trouble with some

traditional credit might be doing

really well on something like their

utility bills or their rent,

which may be a much better indication

of how they'll do on a mortgage. Right.

And how they did on either some

medical bill or some small department

store credit card where they had

a dispute, right. So that we,

there's just a fuller picture

that we can get of a borrower.

The other thing that we've really

learned over time is that like the credit

score itself is only about whether

it's not someone becomes delinquent.

Mm-Hmm .

It's not really about whether or not

they can sustain their financial position

over time.

And we've actually found there's some

people who have low credit scores because

they miss payments from time to time

because their income isn't steady. Yeah.

Or because they had an unexpected expense

who actually always become current

again. Right. So that's still going

to produce a low credit score,

but they may still be

a very viable borrower.

For home. Right. And still

have the ability to pay and.

House and actually moving

into home actually maybe

make them more stable. Right.

So that we really need to start thinking

of not just a single measure of credit

risk,

but think of a variety of measures and

how they interact to describe that whole

person, right? Not just their weight,

not just their height, but their weight,

their height, how fast

they can run. You know,

do they have experience

throwing a javelin?

But we can get a lot more information

into this decision. That's.

Great. Well,

do you have anything else that you

would like our listeners to know about

credit, credit scoring?

Anything else that you would like to

leave them with as a parting note?

Yeah, I think as a parting note, I would

just say, Hey, this is an opportunity.

It's a little scary,

it's threatening some of our

business models are being upset.

You know, even on our side,

we don't know exactly what models

we're going to provide to our clients.

People are starting to ask questions,

but I think we should try and take this

as a learning opportunity to create

something better. Obviously we've been

doing something one way, it's fine,

but it's certainly not the best.

So let's try and improve what

we're doing in the future.

Thank you so much for your insights.

We really appreciate your perspectives

on what's happening in the industry.

For our listeners who would like to reach

out to you, where can they find you?

You know, they can find our

website ad-co.com and there's

contact us there on the financial side.

It's fi cycle F-I-C-Y-C-L e.org

if they're interested in the

financial education. Anyway,

thank you so much for having me.

It's always pleasure to talk

to you and work with Equifax.

Likewise, Andrew, you're always a great

partner and we really appreciate it.

The information and opinions provided

in this podcast are intended as general

guidance only and are subject

to change without notice.

The views presented during the podcast

are those of the presenter as of the

date.

This podcast was recorded and do not

necessarily reflect official positions of

Equifax.

Investor analysts should direct

inquiries using the contact us box on the

investor relations section@equifax.com.