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NYSE:AMRX 23 December 2025 - 8 January 2026

Amgen Stock After Hours (AMGN) on Dec. 22, 2025: FDA Clears New Prolia/Xgeva Biosimilars, Fitch Upgrades Credit — What to Know Before the Dec. 23 Open
Amgen Stock After Hours (AMGN) on Dec. 22, 2025: FDA Clears New Prolia/Xgeva Biosimilars, Fitch Upgrades Credit — What to Know Before the Dec. 23 Open

Amgen Stock After Hours (AMGN) on Dec. 22, 2025: FDA Clears New Prolia/Xgeva Biosimilars, Fitch Upgrades Credit — What to Know Before the Dec. 23 Open

Amgen Inc. ended Monday, December 22, 2025, modestly higher, but the more important story for Tuesday’s open is what hit after the closing bell: fresh FDA approvals for new denosumab biosimilars that reference Amgen’s blockbuster bone-drug franchises Prolia and XGEVA—plus a credit-rating upgrade from Fitch that underscores improving balance-sheet flexibility.
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#1 STRONG BUY

Constellation Energy

NASDAQ: CEG 95 / 100
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AerCap

NYSE: AER 93 / 100
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Walt Disney

NYSE: DIS 92 / 100
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AIG

NYSE: AIG 90 / 100
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Cheniere Energy

NYSE: LNG 88 / 100
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