Pfizer says COVID-19 booster shot data coming in August, not July

Shares of Pfizer Inc. gained 1.9% in trading on Friday, the day after the company put out a statement saying it plans to share clinical data for its experimental COVID-19 booster shot in August. Pfizer previously told investors it would share that data and submit an application for emergency authorization in July. A Pfizer spokesperson said in an email that the company also plans to develop a booster candidate specifically targeting "the full spike protein of the delta variant," with trials for that shot set to begin in August. Pfizer's stock is up 8.9% so far this year, while the S&P 500 has gained 16.0%.

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