What Actually Pushed Rates Higher Last Week? It Wasn't the Inflation Report.

Lets recap and check in! Last week, rates improved early in the week. Wednesday's inflation report stalled that momentum. By Friday, the market began analyzing Fed Chair Kevin Warsh's first Jackson Hole speech.

The inflation number wasn't the big surprise.

What happened around it was.

The Fed chair's speech.

Wednesday brought the latest PCE report, the Fed's preferred measure of inflation.

Core PCE came in at 3.3% year over year, unchanged from the month before.

Not a surprise. Not a disaster.

Just more of the same: inflation is still running above the Fed's 2% target.

There's also a technical wrinkle inside that number. Part of the reading is being influenced by a financial-services fee category that the government is in the process of revising. That should ease some of the distortion going forward, but it doesn't change the bigger picture for the Fed.

Then came Friday.

At Jackson Hole, Kevin Warsh made it clear that inflation remains too high and that the Fed is not ready to declare victory. He also signaled a different approach to communicating future policy, putting more emphasis on what the Fed actually does than on telling markets what it might do next. The message landed.

Expectations for a September rate hike moved higher, with market-implied odds rising from roughly 35% to around 60% after the speech.

Mortgage-backed securities sold off, and the pressure moved through to mortgage pricing.

The important distinction is this: the market wasn't simply reacting to Wednesday's inflation number. It was reacting to what Friday's speech could mean for the months ahead.

The mortgage-bond market has a problem of its own.

There's another piece of this story that doesn't get nearly enough attention: mortgage-backed securities.

Mortgage rates aren't set directly by the Federal Reserve. They're heavily influenced by what investors are willing to pay for mortgage bonds.

And lately, that market has been under pressure.

One thing to watch is MBS pay-ups—the premium investors are willing to pay for mortgage pools with characteristics they particularly want.

Those premiums have fallen sharply from their spring levels.

That matters because when investors are willing to pay less for mortgage-backed securities, lenders generally need more yield to attract buyers.

So when someone asks:

“Why didn't my mortgage rate improve when the 10-year Treasury fell?”

This is part of the answer.

Mortgage rates are not simply the 10-year Treasury plus a fixed spread.

There's an entire mortgage-bond market sitting between the two.

This isn't just an inflation story anymore.

Sentiment, positioning and the competition for investor capital are all showing up in the bond market.

Treasury buybacks have provided some support, but they haven't been enough to turn the broader move around. As war talks continue, and so much general uncertainty - Most economists banter is now suggesting a rate hike in the short-term and are uncertain of when exactly cheaper borrowing may follow.

Chezney's Take

Theres been a recent change in expectations around the Fed, continued pressure in mortgage-backed securities, and a bond market dealing with a lot of competing demand for capital.

So I don't think the right question is simply:

“Should I wait for rates to come down?” but rather “What does the math look like for me right now?”

Because your mortgage isn't a headline.

It's a set of numbers.

Your purchase price. Your down payment. Your loan amount. Your monthly payment. Your cash on hand. Your timeline.

That's where the decision lives.

If you're trying to decide whether to buy, refinance, restructure what you already have, or simply wait, let's run your numbers and look at the options.

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