International Paper is trading lower in extended hours, extending a decline from the regular session. The move follows a broader trend in the paper and packaging industry, as peers Smurfit Westrock and Packaging Corporation of America also saw their shares fall by 2.6% and 1.1% respectively during the most recent regular session. While recent commentary has contrasted the company with Amcor and highlighted its dividend yield, there are no company-specific filings or earnings releases to account for the after-hours volatility. Consequently, the stock appears to be reacting to negative sentiment within the broader materials sector.