The markets extended a risk rally on Wall Street on Friday to end a tumultuous week that saw a brewing banking crisis send bond yields plunging while market participants sharply lowered expectations of future interest rate hikes in Western economies. The European Central Bank (ECB) delivered an inflation-fighting 50 basis point rate hike in line with oft-repeated guidance, with sentiment buttressed by the Swiss National Bank's massive support for Credit Suisse Group AG, which sent the troubled lender's shares 20% higher.