22.08.2017 • 13:00 GMT
John Kicklighter
• The US Dollar and US benchmark equity indexes (like the S&P) have a correlation that waxes and wanes with circumstance
• Traditionally, the currency and index are presumed to hold a negative relationship as one is a haven and other 'risk' asset
• A positive relationship arose these past three years - and has during previous periods - as risk views aligned or ignored