Yardeni Research believes September's reputation as the weakest month for stocks could create an attractive buying opportunity, anticipating a year-end rally. The firm acknowledges concerns over rising bond yields, high oil prices, and potential rate hikes, but suggests yields are normalizing rather than reaching dangerously high levels. Yardeni also points to resilient U.S. economic data, including strong consumer spending and manufacturing activity, with the Atlanta Fed’s GDPNow model estimating 4.8% growth for the third quarter.