Dow Jones Plunges 400 Points as JPMorgan, Financials Drag; Oil Rallies on Iran Tensions

• US benchmark indices closed lower, with Dow Jones falling 400 points, S&P 500 and Nasdaq also ending below flat line.
• JPMorgan stock dropped 4% despite an earnings beat, due to investment banking revenue missing expectations, dragging down Goldman Sachs.
• Credit card companies Visa and Mastercard saw significant declines (4.5% and 3.8% respectively) amid concerns over potential credit card interest rate caps.
• Oil prices surged, with Brent crude near $66/barrel, following Donald Trump's comments on Iran protests, boosting haven assets like Gold and Silver.
• CPI data was in line with expectations, but core CPI beat forecasts; Fed rate cut probability remains low for January and March.

Why It Matters: Financial stocks and policy concerns dragged Dow Jones down, while geopolitical tensions fueled an oil rally.