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Market Volatility: Pfizer Dips, Circle Soars, Oil Plummets

12/16/2025

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Summary

Story summary

Pfizer Inc. shares fell over 4% on December 16, 2025 after it issued disappointing 2026 earnings guidance of $2.80 to $3.00 per share.
Elanco Animal Health Incorporated shares rose 3% after insider purchases.
Circle Internet Group shares jumped 8% after Visa announced support for Circle's USDC.
Southwest Airlines Co. shares rose 2% after Barclays upgraded its rating.
Oil companies' shares fell as U.S. crude prices dropped to lowest since 2021.

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Story summary

Pfizer Inc. shares fell over 4% on December 16, 2025 after it issued disappointing 2026 earnings guidance of $2.80 to $3.00 per share.
Elanco Animal Health Incorporated shares rose 3% after insider purchases.
Circle Internet Group shares jumped 8% after Visa announced support for Circle's USDC.
Southwest Airlines Co. shares rose 2% after Barclays upgraded its rating.
Oil companies' shares fell as U.S. crude prices dropped to lowest since 2021.