Wall ​Street's main ​indexes opened lower on ​Thursday, as concerns over heavy AI spending ‌resurfaced ⁠after the ⁠first batch of ​Big Tech earnings, while another ​jump in oil prices linked to ​the widening ⁠Middle East ‌conflict ​further dampened ​sentiment.The Dow ⁠Jones Industrial Average fell 463.0 ​points, or 0.89%, at the ​open to 51755.54. The S&P 500 fell 80.7 points, or ‌1.08%, at the open to ​7418.29, ​while ⁠the Nasdaq Composite dropped 445.4 points, or 1.73%, to ​25245.542 at the opening bell.