AstraZeneca PLC AstraZeneca (NASDAQ: AZN) Dump 7.7% Stake In Moderna Inc (NASDAQ: MRNA) AstraZeneca Plc (NASDAQ: AZN) disclosed that it has dumped 7.7% stakes in US biotechnology firm Moderna Inc. AZN has dumped the holdings of Moderna Inc (NASDAQ: MRNA) for more than $1 billion.