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Agency MBS offer historically cheap valuations, attractive yields, and a defensive profile, with PMBS leading in mortgage-backed bond investing.


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Agency MBS offers attractive starting yields and historically cheap valuations, paired with a defensive profile in risk-off environments. The volatility-adjusted spread is 63 bps, placing it in the 89th percentile historically, meaning it’s only been cheaper about 11% of the time. In our view, these valuations present a compelling entry point, with the potential to increase carry versus other high-quality sectors while also moving up in credit quality.

As of 31 October 2025. Source: PIMCO. Spreads are shown against SOFR Swaps. "Rich” and “Cheap” defined as 1 standard deviation from average OAS. “2x Rich” and “2x Cheap” defined as 2 standard deviations from average OAS. The terms “cheap” and “rich” as used herein generally refer to a security or asset class that is deemed to be substantially under- or overpriced compared to both its historical average as well as to the investment manager’s future expectations. There is no guarantee of future results or that a security’s valuation will ensure a profit or protect against a loss.
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Please note this article is for information purposes only and does not in any way constitute investment advice. It is essential that you seek advice from a registered financial professional prior to making any investment decision.
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