The doctrine of “Amercian Exceptionalism”, which has been around for a while, has mainly applied to politics and international relations, but recently it appears to have moved into the realm of asset markets – in the last year, US equity returns have diverged significantly from those of the rest of the World, with the last 4-5 months seeing the US markets going their own way, with little regard to global trends. The chart below shows that in the last 4 months or so, they have diverged massively from World ex-US equities, as an apparent “rolling bear market” has engulfed Emerging Markets, Europe, the UK and Asia. As of 19th September, the MSCI World Index (including the US) is +4.8% year-to-date; ex the US, it is down 0.9% .