Takeaway

The presenter argues that surging US Treasury yields and negative convexity are heavily impacting the agency mortgage-backed securities (MBS) market, directly transmitting into higher consumer borrowing costs. Despite mortgage valuations screening cheap, macroeconomic rate uncertainty and leveraged convexity hedging are keeping buyers sidelined. With mortgage rates pushing higher, the presenter warns that housing affordability is being crushed, locking up housing turnover unless home prices undergo a significant correction.

What the presenter said

• MBS Market Transmission: MBS remains the central link between Wall Street, the Treasury market, mortgage lenders, and homeowners, making it highly sensitive to rates [00:04].
• Yield Surge & Convexity: Fixed income yields have moved north of 5%, with 10-year Treasuries approaching 530 points, causing mortgage coupons and indices to trade to full extension and triggering broad negative convexity pressures [00:51, 00:58].
• Cheap Spreads vs. Macro Hesitation: The Barclays Aggregate Index is sitting near 40 basis points—exceeding its two-year high and reflecting relative cheapness—yet macro rate uncertainty is causing typical mortgage buyers to pause [01:18, 01:34].
• Hedging Amplification: Significant leverage from hedge funds, mortgage REITs, and retail market participants is adding selling and convexity hedging pressure into the weakness [01:44].
• Affordability Wall: As mortgage rates track the 10-year higher into the "7-handles," borrowing costs are expected to severely weigh on housing prices and turnover [02:51, 03:04, 03:15].
• Curve Catalysts: The upcoming Treasury funding announcements on November 4th will be critical in dictating curve shape and long- vs. short-end issuance [03:28].
• Locked-Up Market: While slowing net origination supply could support mortgage spreads, the broader housing market faces gridlock because COVID-era borrowers with ultra-low rates refuse to move [03:56, 04:27].

Trade ideas

No actionable trades were put forward. The presenter maintains a bearish macro view on housing market turnover and near-term mortgage convexity performance, noting that despite historically wide spreads, leveraged selling and rate volatility continue to suppress demand.

Levels and data cited

• 10-Year Treasury Yield: Moved "north of 5%", close to "530 points"
• Mortgage Rates: Quoted into the "7-handles"
• Barclays Aggregate Index: Sitting "close to 40 basis points" (outside of a two-year high)
• Catalyst Date: November 4th (Treasury funding announcements)

Risks and what would invalidate this

• Convexity Hedging Squeeze: Continued forced selling or hedging pressure from levered players (mREITs and hedge funds) compounding market weakness.
• Affordability Shock: Failure of housing prices to correct, leading to a complete freeze in housing turnover.
• Rate Lock-in: COVID-era borrowers staying put, suppressing transaction volumes and net housing supply.
• Macro Volatility: Persistent inflation, high energy/oil prices, and Fed rate expectations keeping institutional buyers sidelined.