Tesla, Oracle among market cap stock movers on Monday

US equities saw broad intra-day movers on May 18, 2026 as mega-, large-, mid- and small-cap stocks swung on earnings, analyst moves and corporate news. Tesla (TSLA.OQ) traded roughly 3% lower, helping weigh on major tech-heavy indexes, while Oracle moved down near 3.8%. Several semiconductor and hardware names (Micron, Lam Research, Applied Materials, KLA) were weaker, pressuring the sector, even as Netflix and other selective names rallied. Notable small-cap moves included LiveRamp surging ~27% after a better-than-expected quarter and Regeneron plunging about 10% on deal news. The net effect was mixed market internals with pockets of weakness in semiconductors and strength in select software/SMID names, contributing to modest declines in headline indices.