Walgreens on Thursday said it could shutter up to a quarter of its more than 8,600 US locations amid plunging retail sales as inflation-battered shoppers cut back on spending. The struggling drug store chain, which closed 150 US locations last year, cut its profit forecast ahead of reporting its quarterly earnings — sending the company’s stock plummeting by nearly 25% in mid-day trading. Walgreens CEO Tim Wentworth, who took over the 123-year-old company in October, cited “persistent pressures on the US con ...