Halliburton is trading 31.56% higher at $41.98 after closing at $31.91 on October 1, 2026, with no confirmed explanation for the sharp after-hours rise.
- A Reuters-syndicated item reported a routine Form 4 filing.
- Halliburton’s investor-relations page lists its third-quarter results call for October 20, not an October 1 earnings release.
- Cited broad-market moves were modest and mixed; recheck for delayed news or a possible quote anomaly.