Chevron CorpYPF Sociedad Anónima is expanding Vaca Muerta shale output and improving cash flow, but rising execution risk from transportation and Argentina LNG keeps the stock at a Zacks Rank #3 Hold. Shale oil production reached 212,700 barrels per day in the second quarter of 2026, up 47% year over year and equal to 80% of total oil production, while total lifting costs fell 31.4% to $8.40 per barrel of oil equivalent. The company generated $824 million of free cash flow despite $1.34 billion of capital spending, and net leverage fell to 1.09X, the lowest level in 11 years. YPF trades at 7.7X forward 12-month earnings, below the Zacks sub-industry at 10.7X and the broader Oils-Energy sector at 12.2X, but above its five-year median forward multiple of 3.7X. Management raised 2026 capital spending guidance to $5.8 billion-$6.2 billion, with about 70% directed toward shale, and targets a final investment decision on Argentina LNG in the fourth quarter of 2026.