PAUL FAITH / AFP / Getty Images Seagate Technology was the best-performing stock in the S&P 500 Wednesday afternoon Key Takeaways Tech stocks rebounded from Tuesday's losses to help boost the major U.S. equities indexes Wednesday afternoon. Seagate Technology and other data storage stocks led gains on the S&P 500. McDonald's shares also climbed as its U.S. same-store sales exceeded expectations. Tech stocks rebounded from Tuesday's losses to help boost the major U.S. equities indexes Wednesday af ...