AstraZeneca Just Sold Its Moderna Stock: Should You?

How long should you hold on to a winning stock? That question is an important one -- and not just for small investors. Even big companies that invest in smaller companies must decide when to cash in their chips.

Earlier this week, British newspaper The Times reported that AstraZeneca (NASDAQ: AZN) sold its entire stake in Moderna (NASDAQ: MRNA). It's a significant story, especially since the big drugmaker ranked as the biotech's second-largest shareholder. Should other investors following AstraZeneca's lead and sell Moderna stock too?

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Source Fool.com