Record highs, a 5% bond yield and an oil shock: the final quarter of 2026 opens with markets pulling in different directions, and the US dollar connects them all.

The fourth quarter of 2026 opens with US stock indices at record highs, the Federal Reserve hiking for the first time since 2023, the 10-year Treasury yield above 5% and Brent crude near $100. On paper, that is a picture of strength. Underneath, it is a market in which fewer stocks are doing the lifting, bond investors are demanding more, and the dollar has turned higher again since early September.

For the quarter ahead, the key question is not simply whether markets will rise or fall, but whether the current trends can broaden and remain supported by fundamentals. According to…