The largest stock price changes during the afternoon: Walgreens, AMD, Dell and others.

Check out the companies making headlines in midday trading.

Although the drug store chain recorded a beat on earnings, it fell about 5% after reporting its quarterly results. The company's president stated on its earnings call Thursday that demand for Covid testing has slowed since January, and it may take time for its healthcare investments to pay off.

The tech company's shares fell about 7%, and Baidu was put on the Securities and Exchange Commission's list of U.S.-traded China stocks that could be delisted if Baidu fails to provide financial audits to U.S. regulators.

Barclays downgraded the chipmaker's stock to equal-weight and lowered its price target from $148 to $115, citing "cyclical risk across several end markets," including PC and gaming as contributors to the downgrade.

Dell and HP's shares dropped after Morgan Stanley downgraded them to equal-weight and underweight, respectively. The bank cited ongoing macro uncertainty and a "cautious hardware outlook" as reasons for the downgrade. Dell fell 5.4%, while HP shed 5%.

The stock of the Calvin Klein parent experienced a 6.4% decline after Morgan Stanley changed its rating from overweight to equal-weight. The firm predicted that the stock would remain within a range for the time being.

The Food and Drug Administration panel voted against recommending the approval of an experimental ALS drug developed by Amylyx after concluding that the study data did not demonstrate the drug's effectiveness in treating the disease.

The stock of the energy company increased by 2% after CEO Vicki Hollub bought 14,191 shares. This move follows Warren Buffett's recent purchase of the outperforming stock.

— CNBC’s Tanaya Macheel, Sarah Min and Samantha Subin contributed reporting