E vs CI Comparison

Eni is an integrated oil and gas company that explores for, produces, and refines oil around the world. In 2025, the company produced 0.8 million barrels of liquids and 4.6 billion cubic feet of natural gas per day. At year-end 2025, Eni held reserves of 6.9 billion barrels of oil equivalent, 44% of which are liquids. The Italian government owns a 33.1% stake in the company. Plentitude, Eni's renewable and low-carbon business, has 5.8 gigawatts of renewable power capacity, serves 10 million electricity customers, and operates 23,000 electric vehicle charging points.

Cigna primarily provides pharmacy benefit management and health insurance services. Its PBM and specialty pharmacy services, which were greatly expanded by its 2018 merger with Express Scripts, are mostly sold to health insurance plans and employers. Its largest PBM contract is with the Department of Defense, and it recently won a multiyear deal with top-tier insurer Centene. In health insurance and other benefits, Cigna primarily serves employers through self-funding arrangements, and the company operates mostly in the US with 16 million US and 2 million international medical members covered as of December 2025.