MMG's stock price plummeted 5.09% during Tuesday's intraday trading session, extending a multi-session decline for the metals and mining company.

The sharp drop comes as hotter-than-expected U.S. inflation data fuels expectations for Federal Reserve interest rate hikes. The April Producer Price Index surged 6% year-over-year, far exceeding market forecasts and rapidly increasing bets on tighter monetary policy. According to market tools, the probability of a 25 basis point rate hike in December has surged to nearly 40%, up from just 13.6% a week ago.

Rising interest rate expectations are broadly suppressing interest-rate-sensitive commodities, particularly non-ferrous metals like copper and aluminum. On the demand side, elevated copper prices continue to inhibit downstream procurement, with markets limited to rigid restocking. Aluminum is also transitioning into its off-season, presenting a supply-strong, demand-weak pattern that pressures the entire diversified metals and mining sector.