Given the S&P 500‘s recent surge beyond 5,300, surpassing some experts’ year-end targets, is it prudent for investors to be concerned about a potential overheating in the market? Goldman Sachs’ chief US equity strategist David Kostin believes that now that the S&P has climbed above the 5,200 target he’d predicted, there just isn’t much more room at the top this year. Kostin believes that the current combination of high stock valuations and low projections for 2024 GDP and earnings growth are lik