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MarketWatch Top Storiesmarkets

Why mortgage bonds are set to deteriorate, and possibly hit the whole market, according to this Wall Street expert

MarketWatch Top Stories
Friday, September 18, 2026 at 12:40 PM
~4 min read
HousingFixed Income

Original Report

A flattening Treasury yield curve is part of the problem for mortgage-backed securities, says Harley Bassman.

Glass House Analysis

Treasury market movements signal how investors view America's fiscal health and economic trajectory. Rising yields mean the government pays more to borrow, which eventually shows up in taxes or reduced services. For average Americans, this translates to higher mortgage rates, more expensive business loans, and a general tightening of financial conditions that makes everything from buying a home to starting a business more challenging.

Housing sits at the intersection of economic policy and the American Dream. For most families, their home represents their largest asset and their primary path to building generational wealth. When housing becomes unaffordable, the social fabric frays—young people delay family formation, workers can't relocate for better jobs, and communities lose the stability that comes from homeownership.

The implications extend beyond the immediate news cycle. Every economic development creates ripples that affect employment, prices, and opportunities in ways that may not be immediately visible but are deeply felt. By tracking these connections, we can better understand how the economy truly works—not as an abstract machine, but as a human system shaped by and shaping the lives of millions.

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