Anheuser-Busch InBev (AB InBev) experienced a significant stock drop on Thursday, with shares plummeting as much as 11%. This marks the company's worst single-day performance since the onset of the COVID-19 pandemic. The decline follows the release of AB InBev's second-quarter report, which revealed a decrease in overall sales volume. Investors reacted negatively to the news, signaling concerns about the brewer's performance and future outlook.