FINANCIAL BLOG

LPL Research examines rising government debt costs, Treasury market stress, and what investors should watch as higher rates reshape the fiscal outlook.

LPL Research provides its Weekly Market Performance for the week of September 28, 2026. Stocks finished a choppy week slightly lower as rising Treasury yields continued to weigh on sentiment, countering some upbeat artificial intelligence (AI) headlines.

A taller wall of worry. Stocks continue to climb a wall of worry, a wall that has gotten a bit taller as fall begins. The conflict in the Middle East, higher interest rates, and questions surrounding the enormous artificial intelligence (AI) capital spending boom all present legitimate risks for investors.