Sunday, September 27

President Donald Trump rejected an Iranian proposal to reopen the Strait of Hormuz gradually over seven days, insisting on an immediate reopening. The decision preserved the central geopolitical risk for markets: disruption through a major energy-shipping corridor without a confirmed new military escalation.

Brent was reported near $97.77 a barrel, up 0.62%, while WTI stood around $92.44, up 0.50%. The move was not a fresh supply shock so much as a continued risk premium, but that distinction matters less for rates if elevated energy prices begin feeding inflation expectations. With the 10-year Treasury already around 5.18% and the 30-year at multi-decade highs, unresolved Hormuz disruption reinforces the market’s concern that energy risk could complicate the path toward easier policy.

Treasury pressure remained concentrated in the long end. The 10-year yield was reported near 5.18%, while the 30-year yield rose 16 basis points to 5.49%, its highest level in more than two decades. Separate reporting placed the 10-year above 5.2%, underscoring the scale of the move despite inconsistent market quotations.

The drivers were broader than a single policy signal: stronger growth data, expectations of another Federal Reserve increase in October, and Middle East energy risks all supported higher term yields. The Fed made no new decision or speech during the period; markets were instead repricing the possibility that the previously reported 3.75%–4.00% target range may not mark the end of tightening. A firmer dollar and pressure on gold fit the same higher-rate, higher-real-yield backdrop.

AI and semiconductor shares remained the clearest source of equity momentum. AMD was reported up about 10% in the preceding session, joining Nvidia, Broadcom, and Micron among U.S. chip companies valued above $1 trillion. Another account described the Nasdaq 100 at a record high, driven disproportionately by major chipmakers.

Meta was also reported to have surged 11% on enthusiasm for its AI assistant, Muse, although a separate quotation set showed the stock down 3.33%. The discrepancy likely reflects different sessions or stale data, so the reliable conclusion is sector leadership rather than a precise single-stock ranking. The reported S&P 500, Dow, and Nasdaq were all higher, with the VIX lower at 14.87, suggesting that strong AI performance was cushioning broader equity markets against rising yields and geopolitical risk.