Global week ahead: Bull markets, bubbles and 'Swiftonomics'
1. U.S. government shutdown raises global economic concerns but markets remain optimistic. 2. Record highs in major indexes despite warnings of market bubbles. 3. Investors are diversifying as consumer sentiment hits historic lows. 4. Credit markets show signs of risk with significant investor overweights. 5. Bankruptcy concerns grow with examples like First Brands' $12 billion debt.