A decrease in short interest typically suggests that investors are less bearish on a stock, potentially leading to less downward pressure on its price. Given that PepsiCo's short interest is significantly lower than its peer average, this could be interpreted as a sign of strength and possibly more investor confidence in the company's performance relative to its competitors. This analysis assumes that the market will react positively to the decrease in short interest, potentially leading to a short-term increase in PepsiCo's stock price.