Stocks on a roll. But overbought market, tons of earnings are key hurdles in the week ahead

People shop at the Pioneer Supermarkets on January 12, 2023 in the Flatbush neighborhood of Brooklyn borough in New York City. 
Michael M. Santiago | Getty Images

Stocks closed out the first full week of trading in 2023 on a high note, building on the strong gains from December: The tech-heavy Nasdaq posted its second consecutive week in the black, up 4%, while the S&P rose 2% and the Dow added more than 1%.

The December report on consumer prices Thursday certainly helped. The headline numbers met economists' expectations and showed inflation continues to edge lower. But it was the underlying results, specifically as it relates to shelter costs — the most heavily weighted component of the index — which indicated that a major source of inflation is on the verge of a slowdown.