Ralph Lauren and Duolingo stocks rose in premarket trading

Several stocks are making significant moves before the market opens today. Ralph Lauren's shares rose by 2.8% after Goldman Sachs upgraded the company's rating from neutral to buy. The bank noted that the fashion brand has less exposure to tariffs compared to its competitors. Duolingo also saw a 1.5% increase following an upgrade to outperform by Citizens JMP Securities. Analyst Andrew Boone highlighted the potential of Duolingo's Max subscriptions to drive growth and mentioned its appealing valuation. Peabody Energy's shares climbed by 4.8% after former President Donald Trump announced on Truth Social that he would authorize energy production using coal. Eastman Kodak's shares increased by over 4% after the company reported a significant rise in net income for the fourth quarter, from $5 million a year ago to $26 million this quarter. Lucid's shares gained 2.8% after Morgan Stanley upgraded the electric vehicle maker's stock to equal weight, suggesting that its artificial intelligence strategy could be beneficial. On the downside, Hallador Energy's shares fell 6% after the company reported fourth-quarter revenue of $94.2 million, which was below analyst expectations of $95.5 million. Baidu's shares rose by 2% after the Chinese tech company announced the launch of two new artificial intelligence models. Meanwhile, Sarepta Therapeutics saw its stock drop over 25% due to the death of a man with Duchenne muscular dystrophy who had received treatments with its product, Elevidys. The company noted that acute liver injury is a potential side effect of this treatment. Lastly, Tesla's shares decreased by 3% after RBC Capital Markets lowered its price target, citing growing competition in the electric vehicle market.