Forex Seasonality: Is it Real?

. However, the average return over the last 10 years for this particular trend is only .39%, or 4.8% on an annualized basis. That’s not that impressive considering the margin of error and the amount of work that you had to do.

As if this were not enough, Lien can’t even proffer an explanation why this is the case. (I’m certainly not blaming her; frankly I would be hard-pressed to come up with anything convincing). Being a fundamental analyst, personally, I like to have some idea (or delude myself into thinking I have some idea) as to why a certain trend exists, and I’m not content to simply take it as face value.  Thus, even if statistical theory tells me that this particular trend probably isn’t a product of pure chance, from where I’m sitting, it might as well be.

Actually, I was much more impressed with a similar piece of analysis that Lien published on FX 360, which looks at how volatility varies for USD/X currency pairs, from month-to-month. For all of the currency pairs that Lien examined, there is a clear pattern: volatility peaks in December/January and reaches a low in the summer. Not only is this trend clearly discernible, but also neatly explicable. In all of the financial markets, trading activity (and volatility, by extension) dries up in the summer as investors go on vacation. It slowly builds during the end of the year as portfolio managers churn their positions to try to meet their annual targets.

From a practical standpoint, there are a few takeaways. First, if you’re a carry trader, know that the risk is generally higher in the winter than in the summer. While many traders may complain about the lack of fluctuation in July and consequent difficulty of profitably day trading, you can sit back and earn a low-risk return on the interest rate spread.

With regard to the monthly trends for specific currency pairs that I referenced at the beginning of this post, I would say that they are certainly worth being aware of, especially if you’re a swing trader and tend to hold your positions for only a month. For shorter or longer-term trading, however, I don’t think most of these trends are actionable. Even in the handful of trends that seem to be bullet-proof, the fact that you must enter into the trade on the 1st of the month and exit on the last day of the month (since it’s on that basis that the trends were analyzed) would seem contrived and annoying.

I have to admit- I’m intensely curious as to whether anyone has actually tried to trade on such a strategy. Please share your experiences below!