THE SOFR SIGNAL
WHEN THE PLUMBING SCREAMS, WAR FOLLOWS

In November 2025, while the market was busy pricing in soft-landing euphoria and arguing about the next twenty-five basis points, I published a post on X with a chart that told a different story entirely. The chart was not about equities. It was not about earnings. It was about the plumbing — the overnight secured and unsecured funding rates that keep the entire financial system breathing.

A SOFR-EFFR spread of 0.36 percent does not make headlines. It does not trend on social media. But for anyone who lived through September 17, 2019 — when SOFR exploded from 2.43% to 5.25% intraday, when repo rates breached 10%, when the New York Fed had to inject $75 billion in emergency liquidity before breakfast — this number was a siren.

The fifth-highest reading in the entire dataset from 2018 onwards. Not noise. Not a quarter-end calendar artefact. A structural scream from the plumbing of the most important financial system on earth.

Let me trace the causal chain that followed the last comparable event, because history does not repeat, but the mechanics of crisis rhyme with frightening precision.

The repo market stress of September 2019 was the canary. COVID was the mine collapse. But between the canary and the collapse, the pattern was clear: funding stress → exogenous supply shock → massive monetary expansion → inflation → tightening → dollar dominance.

By late October 2025, SOFR sat near 4.27% — roughly 15 basis points above the effective federal funds rate at 4.12%. The spread I flagged at 0.36 on October 31st was not a one-day anomaly. The Standing Repo Facility (SRF) spread widened to +22 basis points — the widest since the facility's creation in July 2021.

The system's margin for error was narrowing. Reserves were draining. The Treasury General Account was swelling. And the Fed was still running quantitative tightening. This was the setup. All that was missing was the exogenous shock.

On February 19, 2025 — exactly ten days before the outbreak of military conflict — I posted that the Strait of Hormuz may become the central point of this war. Not because of any classified intelligence. Because of trade arithmetic.

The Strait of Hormuz handles roughly 20 million barrels per day. Approximately 84% of crude shipments through the strait were destined for Asian markets. Strip away the geopolitical theatre and examine the trade-war logic:

• Russia and America become the only major oil sellers. With Iran, Venezuela, and the GCC effectively blockaded, the global supply of accessible crude concentrates in two producers. Both can sell at significant premiums.
• GCC and Middle East face imported inflation. Nations that are net energy exporters but cannot export become net importers of everything else at inflated prices. Their currencies weaken. The dollar strengthens.
• India and China consume oil at elevated prices. The two largest emerging-market energy importers see their current accounts deteriorate. Capital flows reverse toward dollar-denominated safety.
• Iran's currency already collapsed. The rial fell over 90% by January 2026. The currency has effectively been destroyed before the first bomb was dropped.

Every war is a trade war. The Hormuz blockade is not a byproduct of conflict — it is the mechanism through which the dollar reasserts itself.

The dollar may be winning the trade war abroad, but the numbers at home are catastrophic.

At approximately $85 billion per month in net interest payments — computed on roughly $39 trillion in gross debt at a blended rate near 2.5% — the United States is already spending more on debt service than on national defence. But this is the low-rate regime.

The supply-chain shock from Hormuz is already feeding through into energy prices. Inflation, already running at 3% — fifty percent above the Fed's 2% target — now faces a commodity-driven accelerant. The Fed faces a trilemma with no clean exit:

• Path 1 — Hike rates to fight inflation. Monthly interest payments surge. The deficit explodes further. Banks holding older bonds at 2–3% coupons face mark-to-market drawdowns that erode capital adequacy — the same dynamic that destroyed Silicon Valley Bank in 2023, except now systemic.
• Path 2 — Cut rates to ease the fiscal burden. Pours fuel on the inflationary fire. The dollar weakens. Oil prices rise further. The very dollar hegemony that Hormuz was designed to protect begins to erode.
• Path 3 — Launch QE to absorb Treasury issuance. The Fed already began "reserve management purchases" in December 2025. If the fiscal deficit continues at $300B+/month and bond buyers thin out, the Fed becomes the buyer of last resort. This is the path to monetisation. This is the path to structural inflation.

Every exit is a trap.

The 2019–2020 cycle played out with debt at ~$23 trillion and blended interest well below 2%. The 2025–2026 cycle begins at $39 trillion — nearly 70% larger. The fiscal margin for error has evaporated.

All wars are trade wars. The trade war with China that began in 2018 was about supply chains. COVID was a supply-chain war fought by a virus. Ukraine was an energy supply-chain war fought with sanctions. And Hormuz is a supply-chain war fought with naval blockades — but the currency arithmetic tells you exactly whose interests are served in the short term.

But the privilege has a cost, and that cost is now compounding at $85 billion a month. The United States cannot simultaneously fund a war, service $39 trillion in debt, run $300 billion monthly deficits, and keep rates low enough to prevent a banking crisis. Something has to give.