- Yield move. The US 10-year Treasury yield climbed to its highest level in more than a year on Monday, May 18 — a move that compressed equity valuations in rate-sensitive sectors and pulled the Nasdaq and S&P 500 lower to start the week.
- Oil whipsaw. Brent crude swung sharply on Trump’s announcement that he was cancelling a scheduled strike on Iran: an initial plunge toward $107 per barrel reversed within hours as markets concluded the pause did not remove the underlying supply-disruption risk, with Brent settling above $106.
- Equity damage contained. The S&P 500 ended May 18 down just 0.07% to 7,403, but the tech sector fell 1.1% on an intraday swing exceeding 2.3% — as higher risk-free rates directly repriced the discounted cash-flow valuations underpinning large-cap growth stocks.
Monday’s session illustrated how directly the Iran conflict now drives US financial conditions. Trump’s morning announcement that he would not “be doing the scheduled attack of Iran tomorrow” — made at the request of the Qatari emir, Saudi crown prince, and UAE president — generated an immediate risk-on spike. Oil fell, yields briefly dipped, and equities lifted. Within the same session, traders digested the Situation Room meeting scheduled for Tuesday and concluded that military risk had been deferred rather than removed, and the moves reversed.
Why yields are rising
The 10-year Treasury yield’s climb to a one-year high reflects multiple reinforcing pressures. The April CPI print showing consumer prices up 3.8% year-on-year — the hottest since May 2023 — lifted the probability of a Federal Reserve rate hike by end-2026 to approximately 30% on CME Group futures, reducing demand for long-duration government bonds. The 10-year yield had been trending higher since mid-April as the oil shock embedded itself in inflation expectations; Monday’s move pushed it to a level that brings into focus the 4.5% threshold at which equity valuations, particularly in utilities and real estate investment trusts, historically face acute pressure.
Fed Chair Kevin Warsh has maintained a data-dependent posture without signalling a clear directional bias, but market pricing increasingly anticipates a lean toward hike rather than hold if the May CPI print — due in June — comes in above expectations again. With Brent crude averaging above $107 throughout May, the energy-led inflation pathway that the Fed has so far treated as transitory is showing no sign of a near-term resolution.
The oil market’s read on Iran diplomacy
Brent crude’s failure to sustain its initial sell-off reveals how the market is pricing the Iran situation. An immediate deal would theoretically release the conflict premium embedded in oil — estimated at roughly $15–20 per barrel — and could push Brent back toward the $85–90 range that preceded the conflict’s outbreak in February. But traders have experienced enough false-dawn ceasefires to price that outcome at a low probability. The more durable scenario, in the market’s view, is a prolonged negotiation in which military risk neither fully materialises nor fully resolves, keeping Brent anchored above $100.
WTI briefly dipped below $100 on May 18 before recovering, while Brent settled at $106.22, up 0.76% on the day. Saudi Arabia intercepted three drones from Iraqi airspace on the same day as the Trump announcement — a reminder that even as diplomacy proceeds, the operational infrastructure of conflict remains active.
Implications for rate-sensitive assets
For equity investors, the yield move has implications beyond any single session. Every basis-point rise in the risk-free rate increases the discount applied to future cash flows, directly reducing the present value of high-growth, capital-intensive names. Among assets tracking this dynamic at close range, Circle Internet Group has been a notable beneficiary of elevated short-term rates, which increase income on USDC’s Treasury-backed reserves; by contrast, firms with negative near-term free cash flow are repriced lower with every sustained yield increase. The Dow Jones Industrial Average fell 0.9% on the day, while the Nasdaq underperformed, closing down 0.7%, consistent with the growth-stock sensitivity thesis.
Source: TheStreet