Dow ends week lower amid AI fears as S&P and Nasdaq follow suit

Group 1: Bank of America and Celsius Holdings - Bank of America analysts have raised their full-year 2026 adjusted EBITDA estimate for Celsius to $815.9 million from $746 million, reflecting stronger Alani Nu topline trends [1] - The analysts upgraded Celsius Holdings shares to 'Buy' from 'Underperform,' citing strong fourth-quarter results and positive trends from the recent CAGNY conference [2] Group 2: Block Inc. and CoreWeave Inc. - Block Inc. shares rose 17% after delivering fourth-quarter earnings in line with estimates and announcing plans to cut over 4,000 jobs, reducing its workforce to just under 6,000 employees [3] - CoreWeave Inc. shares fell 17.6% despite posting fourth-quarter revenue of $1.572 billion, which topped expectations, but reported wider-than-expected losses and a cautious first-quarter outlook [3] Group 3: Duolingo Inc. and Market Trends - Duolingo Inc. shares fell nearly 15% despite reporting fourth-quarter revenue of $282.9 million, up 35% year-over-year, as its forward guidance disappointed Wall Street [4] - The broader indexes, including the Nasdaq and S&P 500, fell 3.3% and 0.86% respectively over February, amid concerns over the AI sector's impact on corporate earnings [5][6] Group 4: Producer Price Index (PPI) Insights - The Producer Price Index (PPI) increased 0.5% month-over-month, above expectations for a 0.3% rise, while core PPI climbed 0.8%, topping forecasts of 0.5% [14] - Headline PPI advanced 2.9% year-over-year, compared to estimates of 2.6%, while core PPI rose 3.6%, well above the 3.0% consensus [14] Group 5: Netflix and Paramount Skydance - Netflix shares surged over 10% after abandoning its attempt to acquire Warner Bros Discovery, allowing Paramount Skydance to take control in a deal valued at $111 billion [8] - Netflix will collect a $2.8 billion breakup fee after declining to match Paramount Skydance's offer, which created a significant gap between the two bids [17]