🛢️ The Iran truce is over. Oil's at $84.
Rough night. The Iran ceasefire expired, bond yields hit a 19-year high, and South Korean stocks had one of their worst single days in years. Pour yourself something and let's get into it.
Listen to the same-day episode — Ep. 042
🛢️ The Iran truce is over. Oil's at $84.
Rough night. The Iran ceasefire expired, bond yields hit a 19-year high, and South Korean stocks had one of their worst single days in years. Pour yourself something and let's get into it.
Alex Monroe
August 19, 2026
⏱️ ~4 min read
📊 Today's Numbers
WTI Crude ▲ $84.45/bbl: ceasefire gone, Strait under threat
30-Year Treasury ▲ 5.31%: highest since June 2007
10-Year Treasury ▲ 4.72%: highest point of 2026
KOSPI (South Korea) ▼ 5.50%: worst chip-led selloff in years
US Gasoline ▲ ~$4.00/gal: household budgets taking the hit
Fed Funds Rate ■ 3.50–3.75%: held, but minutes drop at 14:00 EDT
🛢️ COMMODITIES
Photo: Mehmet Turgut Kirkgoz
The Iran Truce Just Expired. Now What?
The 60-day US-Iran ceasefire ended August 18 with no deal and no extension. A senior Iranian official has since told Reuters that Tehran may shift to a "fully offensive posture" and is explicitly threatening to escalate in the Strait of Hormuz. One in five barrels of global oil moves through that channel. Markets didn't wait for confirmation.
WTI crude rose to $84.45/bbl pre-market, up roughly 0.85% on the session, as traders priced in the supply-shock risk directly
Strait of Hormuz traffic has already slowed to a crawl since the conflict began in late February, meaning there's a structural risk premium baked into energy prices before any escalation even happens
US pump prices are hovering near $4.00/gallon, which complicates the Fed's inflation calculus at exactly the wrong moment
💬 Every $10 gain in crude typically adds about $0.25 to a gallon at the pump. There's still a lot of room to go higher.
📉 BONDS
Photo: Mark Youso
30-Year Treasury Yield Hits 5.31%. Your Mortgage Feels It.
Long-dated US Treasuries sold off hard, pushing the 30-year yield to its highest level since 2007. This isn't just a number for bond traders. It's the benchmark that anchors fixed-rate mortgage costs, car loans, and corporate borrowing. And the pressure is global: French and German yields hit their own multi-decade peaks overnight.
30-year yield climbed 4+ basis points to 5.31%, driven by oil-inflation fears, persistent fiscal deficits, and AI-era capital demand
10-year yield rose to 4.72%, the highest of 2026, repricing trillions in consumer and corporate debt
The 2-year yield nudged up to 4.18%, keeping the curve compressed and telling you markets aren't expecting rate cuts anytime soon
💬 A sustained 30-year yield above 5.30% typically pushes 30-year fixed mortgage rates above 7%. For a median-priced US home, that's hundreds of dollars a month you simply don't have.
📈 EQUITIES
Photo: Rafael Minguet Delgado
South Korea's KOSPI Drops 5.50% in Asia's Worst Chip Rout of 2026
The semiconductor selloff that started on Wall Street landed hard in Asia overnight. South Korea bore the worst of it, with the KOSPI plunging 5.50% in a single session. Samsung and SK Hynix each fell more than 7%. Kioxia in Tokyo dropped 9%. The culprits were the same two forces colliding: soaring US bond yields shrinking the earnings multiples that made chip stocks look so attractive, and fresh geopolitical uncertainty from the ceasefire collapse.
MSCI Asia-Pacific fell 2.00% overnight, with South Korea's KOSPI down 5.50%, the steepest regional decline
Samsung, SK Hynix, and Kioxia each lost more than 7–9%, wiping tens of billions in market cap from the global memory sector in a single session
Rising 30-year US yields above 5.31% crushed the multiple expansion that had made semiconductors one of 2026's best-performing trades heading into August
💬 Chip stocks were carrying a big chunk of this year's gains. One bad night in the bond market just made that position a lot more uncomfortable.
📰 Also Today
FOMC July Minutes Due 14:00 EDT Today: Three Fed presidents dissented in favour of a 25bp hike at the July meeting, and with core PCE estimated at 3.24% year-over-year, the minutes could shift the current 35% probability of a September hike significantly in either direction.
Indian Rupee Near All-Time Lows, RBI Intervenes: The rupee is trading near record lows against the dollar as WTI near $84.45/bbl inflates India's import bill. The Reserve Bank of India is back in intervention mode, a move that constrains its monetary policy flexibility at a time when domestic inflation is already above target.
Home Depot Q2 Beats, Holds Guidance: Home Depot beat Q2 consensus estimates and gave the Dow a rare bright spot on a difficult morning, but management held rather than raised full-year guidance — a clear signal that 30-year mortgage rates above 5.31% are capping big-ticket home renovation spending through year-end.
🎧 Listen to today's episode — The Open Bell with Alex Monroe
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Not investment advice. For informational purposes only.