WTMS Blog Today = What’s up in Mortgage Today (AM) – 04/13/2026

Oil surging past $100 per barrel after Trump ordered a blockade of the Strait of Hormuz sent bond markets spiraling lower this morning, with the 10-year Treasury yield jumping 3.3 basis points to 4.317% as inflation concerns outweighed softer-than-feared consumer price data. The geopolitical shock followed failed peace negotiations with Iran over the weekend, threatening to worsen an already-strained energy market where 20% of global oil flows through the critical Persian Gulf chokepoint. Brent crude rocketed 7.3% to above $102 per barrel in reaction to Trump’s restrictions on vessels calling at Iranian ports, amplifying recession fears and triggering a broad selloff in bonds worldwide.

Even with early-morning weakness, Agency mortgage-backed securities steadied near Friday’s close as traders digested whether this oil spike represents negotiating leverage or a genuine, sustained inflation driver. The real question for originators remains whether higher crude prices will bleed into broader inflation expectations or fade as temporary, geopolitical noise. March inflation data delivered mixed signals that should have supported bonds, yet they fell anyway.

Core consumer prices rose just 0.2% month-over-month—below the 0.3% forecast—suggesting underlying inflation is cooling to multi-month lows. The headline figure jumped 0.9% month-over-month, the sharpest monthly increase since 2022, but this surge was almost entirely attributable to energy prices spiking. Year-over-year, core CPI printed at 2.6% versus a 2.7% forecast, while headline CPI came in right at the expected 3.3%.

The problem is that markets care less about what inflation *was* than what inflation *will be* if crude stays expensive, pushing up fuel, food, and transportation costs for everyday consumers. Money markets are now pricing in less than a one-in-five chance of a Fed rate cut by year-end, a stark reversal from cut expectations just weeks ago. The Strait of Hormuz blockade threat has global bond investors spooked because energy shocks historically translate into stagflation—slower growth *and* higher prices simultaneously.

Iran has already been selectively blockading the strait since the February attack from the U.S. and Israel, allowing only certain ships through while charging tolls up to $2 million each. Crude exports from Iran rose to 1.9 million barrels per day in March, up 100,000 barrels daily from prior months, but the impact on global supply chains is being felt through higher shipping costs and insurance premiums.

At least 22 vessels have been attacked in recent weeks, with 10 crew members killed and roughly 800 commercial vessels now stranded—half of them oil tankers. For mortgage originators, every 1% rise in oil prices typically adds 3 to 5 basis points of upward pressure on Treasury yields within weeks, making rate locks increasingly valuable for borrowers on the fence. Goldman Sachs kicked off earnings season with disappointing results, with shares down 4.5% in premarket trading due to a revenue miss in fixed-income, currency, and commodities trading.

The broader S&P 500 was poised for a 0.6% opening loss, though mortgage bonds showed surprising resilience as some investors viewed the oil spike as temporary negotiating pressure rather than a fundamental economic shock. Strategists at Morgan Stanley and Swiss Life Asset Management noted that investors see the blockade as leverage in discussions rather than a permanent disruption, keeping equity and credit markets from imploding entirely. Agency MBS 30-year 5.5% coupons held near 100.80, down just 7–8 basis points from Friday’s close despite the volatility.

This resilience could signal that the mortgage market is absorbing the oil shock as priced-in inflation rather than repricing for structural rate-regime change. FundingShield released Q1 2026 fraud analytics showing 43.72% of a $106.7 billion loan portfolio carried material wire and title defects, with CPL discrepancies impacting 43.49% of transactions. The report underscores vulnerabilities in closing workflows just as lenders increasingly adopt AI-driven automation and embedded verification solutions to cut fraud losses.

Dark Matter Technologies rolled out Ask Aiva, a conversational AI query tool allowing loan officers to ask data questions in plain English and receive reasoning behind the answers. Several lenders and vendors announced compliance and operational upgrades: PHH Mortgage rebranded as Onity Mortgage Corporation, AmeriHome updated rate sheet formatting effective April 20, and Newrez began accepting loans using the new Uniform Appraisal Dataset 3.6 format. These operational shifts suggest the industry is moving toward standardized, tech-enabled pipelines that should improve origination efficiency and reduce costly compliance errors during market stress.

Existing Home Sales for March are due mid-morning today and will reflect buyer demand *before* the Iran conflict and recent mortgage rate increases hit the market in earnest. Purchase applications have already been subdued due to affordability constraints, so today’s report likely shows continued weakness despite lower sales volumes than pre-pandemic levels. Fed officials including New York President Williams and Governor Waller are scheduled to speak this week; their tone on inflation and rate policy could shift market expectations if they signal heightened concern about oil-driven price pressures.

The bond market is now tracking a 4.40% ceiling and 4.30% floor on the 10-year yield as the key technical levels defining near-term mortgage-rate momentum. Risk-averse originators should keep defenses tight until yields convincingly break below 4.30%, while risk-takers may find value near 4.40% if the geopolitical situation de-escalates.

Locking vs Floating

March inflation cooled in the core components despite headline energy spikes, but markets are treating the oil-driven spike as a harbinger of broader price acceleration if crude remains elevated.

The 10-year yield’s 4.40% ceiling and 4.30% floor define the near-term range; traders are cautious that renewed energy shocks could push yields higher, making it prudent for borrowers to lock if they cannot tolerate additional rate moves. Conversely, if the Hormuz blockade resolves quickly and oil prices recede, yields could drift lower, rewarding floaters who waited. For originators managing pipeline risk, the binary geopolitical outcome makes traditional hedging more critical than rate-timing bets.

Today’s Events

March Existing Home Sales (mid-morning)

Federal Reserve speakers: New York President Williams, Governor Waller

Bond Pricing

UMBS 30 yr
| Coupon | Price | Intra-Day Change |
| 5.0 | 99.00 | 99.69 |
| 5.5 | 100.80 | 100.95 |
| 6.0 | 102.19 | 101.84 |

GNMA 30 yr
| Coupon | Price | Intra-Day Change |

Treasuries
| Term | Yield | Price | Intra-Day Yield Change |