Stocks making the biggest moves midday: Southwest Airlines, Circle Internet Group, Halliburton & more
Here are some of the stocks making notable moves in midday trading.

TL;DR
- Pfizer issued disappointing 2026 earnings guidance, forecasting $2.80-$3.00 per share against analyst expectations of $3.05.
- Elanco Animal Health shares rose over 3% after its CEO and CFO disclosed stock purchases.
- Circle Internet Group jumped over 8% following Visa's announcement that partners can settle transactions using Circle's USDC stablecoin.
- Southwest Airlines shares climbed over 2% to a new 52-week high after Barclays upgraded the airline to overweight.
- Energy stocks fell as U.S. crude oil prices dropped to their lowest since 2021, with Halliburton and APA seeing significant declines.
- Estee Lauder shares advanced 3% after Bank of America added the company to its US 1 List, rating it a buy and top pick for 2026.