Key Takeaways Alcoa shares moved lower in premarket trading Monday after the company made a $2.2 billion all-stock offer to buy joint-venture partner Alumina to expand its global mining footprint and consolidate its operations. Alcoa is offering 0.02854 of its stock for each Alumina share, representing a 13$34.50 from a horizontal line and support from the 2023 low at $23.07. Alcoa Corporation This image depicts the AA char ...