 
Against the USD, the Pound has two months in which it has shown a notable
directional tendency. They are September and December, as can be seen below.
In the case of the former, GBP/USD has risen six of the last seven years,
averaging an increase of over 230 pips for the month in that span. Actually,
2005 broke a string of twelve consecutive September gains in the pair.

Source: Anduril Analytics
|