Check out some of the companies making the biggest moves in midday trading. Bank stocks — The group fell broadly after President Donald Trump called for credit card rates to be capped at 10% for one year . Capital One slid 6%, Synchrony Financial tumbled 8% and Citigroup dropped 3%. Bank of America , Wells Fargo and JPMorgan Chase were down nearly 2%. Although alternative lending sources were initially thought to gain from the move, buy-now-pay-later provider Affirm reversed course and later dropped about 5%. Duolingo — The language education app shed about 7% after CFO Matt Skaruppa stepped down, effective Feb. 23. Duolingo also said fourth-quarter daily active users grew by about 30% year over year, slightly more than a FactSet consensus estimate showed. Lithium stocks — Lithium producers were higher after Scotiabank upgraded the miners to outperform, saying it sees further upside ahead. Albemarle and Lithium Argentina were both upgraded to outperform from sector perform and their stocks rose about 5% and 8%, respectively. Sociedad Química y Minera de Chile ADRs added almost 5%, Atlas Lithium rose 4% and while Lithium Americas surged 9%. Teen apparel retailers — Abercrombie & Fitch , Urban Outfitters and American Eagle all slid after the companies preannounced holiday results. Abercrombie lost nearly 17% after narrowing its fourth-quarter guidance, while Urban Outfitters tumbled 10% after net sales for the two months ended Dec. 31 grew 9% year over year. American Eagle slipped nearly 7% after fourth quarter to date comparable sales through Jan. 3 rose in the high single digits. Victoria’s Secret , Gap and Macy’s all fell in sympathy. Dexcom — Shares of the glucose monitor manufacturer rose more than 5% after preannouncing fourth-quarter results and offering a forecast for 2026, predicting revenue growth of between 11% and 13%. For the fourth quarter, Dexcom expects revenue of about $1.26 billion, bringing the 2025 total to about $4.66 billion. For 2026, the company expects revenue to rise to between $5.16 billion and $5.25 billion. Beam Therapeutics — Shares leapt 28%. The biotech company said it has reached an alignment with the U.S. Food and Drug Administration, which may put the company on course for accelerated approval of its lead genetic disease program and liver-targeting therapy BEAM-302. Vistra — Shares of the power producer rose more than 5% after it set a private offering of 5- and 10-year senior secured notes to help fund its Cogentrix Energy Acquisition. BMO Capital also raised its price target to $244 per share from $230, while reiterating the stock at outperform. Abivax — The French maker of vaccines and antiviral compounds jumped 5%, after briefly climbing as much as 13%, on a French media report that Eli Lilly may be interested in buying Abivax for the equivalent of $17.5 billion and is awaiting regulatory assurances from the French government. Lilly rose 1%. Walmart — Walmart shares gained more than 3% to an all-time intraday high, after Nasdaq said the retail giant will be added to the Nasaq-100 index later this month. The stock could see more demand after joining the index, which is tracked by the popular Invesco QQQ Trust ETF . Exxon Mobil — The energy giant lost about 1% after Trump threatened to block Exxon from Venezuela’s oil market, noting he didn’t like the company’s response to calls for energy companies to come back to the country. ” They’re playing too cute ,” the president said. Akamai Technologies — The cloud and cybersecurity stock jumped nearly 6% after a double upgrade at Morgan Stanley to overweight from underweight. “We see better growth on the back of moderating declines in Delivery, stable Security growth and accelerating growth in Compute,” analysts at the bank said. Sun Country Airlines — Shares rallied more than 12% after the low-cost airline agreed to be acquired by Allegiant Travel for $18.89 per share in cash and stock. The deal, expected to close in the second half of the year, values Sun Country at around $1.5 billion, including debt. —CNBC’s Scott Schnipper and Darla Mercado contributed to this report.