Wells Fargo named Halliburton as its Top Pick in the oil services sector. The firm is more biased towards large oil service companies following the rebound in oil prices, and it thinks that the sector's margins will return to 2013-2014 levels. Wells keeps an Outperform rating on Halliburton.

Unusual total active option classes on open include: ImmunityBio (IBRX), Halliburton (HAL), Redfin (RDFN), Nokia (NOK), Matterport (MTTR), General Motors (GM), UPS (UPS), Philip Morris (PM), PepsiCo (PEP), and General Electric (GE).

Reports Q1 revenue $5.8B, consensus $5.67B. "Halliburton delivered solid first quarter results that again demonstrated the power of our strategy and the strength of our execution. Activity in North America recovered from fourth-quarter lows, and our international business delivered its 11th consecutive quarter of year-on-year growth," commented Jeff Miller, Chairman, President and CEO. "Our customers' multi-year activity plans across markets and asset types confirms my confidence in the strength and duration of this upcycle. Halliburton demonstrated its commitment to shareholder returns in the first quarter and repurchased $250 million of common stock - a solid start to the year and a good benchmark for our expectations going forward," concluded Miller.