After the spike in volatility in August, markets returned to a semblance of stability in September, but this masked some big underlying shifts across and within asset classes. Most notable was a sharp reversal early in the month of bond yields, which until then had trended inexorably lower throughout 2019: the yield on 10 year US Treasuries moved from below 1.5% at the beginning of the month to 1.9% within a matter of days. Somewhat more positive economic data and an apparent thawing of trade war rhetoric between the US and China proved to be the trigger for a reversal of some of the big bond moves seen in August, and risk appetite picked up.