Chocolate said:
Thanks for the info., though I can't access it online as it's subscribers only. Do you get the journal at the newsagent? I would be grateful if you or anyone with access to it could summarise in a sentence what the conclusions of the study are! Many thanks! I'm reading lots of articles these days saying things like "we are entering strange times" and we can tear up our history books telling us what should be happening - stuff like currencies with high interest rates should be the strongest isn't working right now with the dollar, stuff like gold and equities simultaneously making new highs etc.
Chocolate - here's the text from the article - unfortunately the chart won't copy. IC is published weekly.
Cancelling out
The rally in the US dollar has run out of steam - the greenback peaked against the euro as long ago as November - while the US stock market continues to rise.
These two facts are more connected than generally realised, because there's a close link between the dollar/euro exchange rate and equity markets.
The chart, below, shows this. It shows that annual changes in the dollar/euro rate are correlated with moves in dividend yields in the US and the eurozone. When US dividend yields fall relative to those in the eurozone, the dollar falls against the euro. And when US relative dividend yields rise, so does the greenback.
In fact, changes in relative dividend yields can explain, in the statistical sense, over a quarter of the variation in annual changes in the dollar/euro exchange rate.
To see why there should be such a link, think of the dividend yield as a measure of expected returns. A high yield means high (rationally) expected returns. And a low yield means low expected returns.
Now, imagine if expected returns on US equities fell, relative to those on eurozone stocks. Why should anyone want to carry on holding US stocks, when they'd suffer a relative loss from doing so?
One reason would be that they expect gains on the US dollar (relative to the euro) to offset losses on US equities (relative to eurozone stocks).
Expected (relative) returns on the dollar should, therefore, rise as expected (relative) returns on US stocks fall. And the way in which expected returns on the dollar rise is through the dollar falling, to a level from which it is more likely to subsequently rise.
So, changes in expected exchange rates should therefore cancel out changes in expected relative equity returns. This is uncovered equity return parity.
Of course, there are good reasons why this link won't always hold. For example, good news about economic growth should cause a fall in a country's dividend yield but a rise in its currency.
Even so, there's an important message here. Unless you know something others don't about such future shocks to growth - and you probably don't - you shouldn't expect both a rise in the US dollar and a rise in US shares relative to the eurozone.