Apple had sold off considerably in the first few weeks of 2025. Meta just hit an all-time high and is still a great buy. Jan. 27 was a wild day in the stock market as investors reacted to Chinese start-up DeepSeek's R1 "reasoning" model that competes with OpenAI's o1 model.

Nvidia Corp.’s stock is declining in Monday action as investors weigh the potential for tariffs to impact chip companies and continue to assess the fallout from DeepSeek. Shares of Nvidia are down 3.4% in midday action to rank among the worst performers in the PHLX Semiconductor Index The stock has pared losses with President Trump now saying he has agreed to pause the Mexico tariffs for a month.