The 30-year U.S. Treasury yield could reach 6% if sustained AI investment keeps lifting U.S. productivity, Barclays said. Stronger productivity and economic growth could lead markets to raise expectations for the Federal Reserve's long-term policy rate, adding upward pressure to longer-dated Treasury yields. The yield has already risen above 5.61%, its highest level since 2002. The report was attributed to Walter Bloomberg on September 29, while the existing record attributed the report to PANews.