Week ending 18 Sep 2026

A quiet week for the big indexes. The S&P 500 finished almost exactly where it started, and not one market on our board read Very High or Max. The moves that stood out were mostly each company's own story.

The one big shared event was the Fed. On Wednesday it raised rates for the first time since 2023, to 3.75 to 4%. The dollar rose and the Australian dollar slid, which is why the pound gained on the Aussie. Earlier, on Monday, Bank of America's boss warned that deal-making fees would fall this quarter, and bank shares sold off. Goldman Sachs was one of the hardest hit.

The rest came down to single companies. Corning said it may sell up to $2 billion of new shares, which leaves each existing share owning a little less. Constellation Energy agreed to buy a power plant in Rhode Island and kept sliding for six days in a row. T-Mobile hit its lowest price in a year as it moves customers off older plans.