Yahoo Finance·2026-01-12 13:35Core Viewpoint - Shares in US banks with credit card businesses have declined following President Trump's demand to cap credit card interest rates at 10% for one year, increasing political pressure on card issuers [1][2][5] Group 1: Market Reaction - Barclays shares fell by as much as 4.8% in early London trading, marking the largest intraday loss since October 17 [3] - In pre-market trading in New York, Capital One's shares dropped by 10%, while American Express fell by 4.9%. Other major US lenders also experienced declines, with Citigroup down 4.3%, JPMorgan down 3%, and Wells Fargo slipping 2.4% [3] Group 2: Impact on Companies - Credit cards are a significant component of Barclays' US consumer bank, which serves around 20 million American customers and has been expanding its credit card offerings [4] - Barclays' US consumer bank is projected to generate £3.6 billion in revenue by 2025, accounting for 12% of the group's total revenue, with credit cards being a crucial element [4] - A potential cap on credit card rates would disproportionately affect Barclays compared to other European banks, as credit cards contribute significantly to its pretax profit [4] Group 3: Political Context - Trump's comments have intensified scrutiny on card issuers, with interest rates on credit cards typically exceeding 20% in recent years, prompting legislative proposals that face strong industry resistance [2] - Trump has set a compliance deadline of January 20 for the proposed interest rate cap, warning that failure to comply would result in legal violations [5]