I was investigating historical currency fluctuations between USD and CAD and it got me to thinking that perhaps this could be leveraged within the portfolio. Let me explain:
Historically the exchange rate between CAD and USD has fluctuated, seeing a low of 0.9 to a high of 1.6 CAD to one USD since 1990 (see chart here.) So it got me to thinking, since I am Canadian and fund my RRSPs in CAD, is it advantageous to weight my holdings proportionally higher when the CAD is weak (such as now), and flip these investments over to USD investments when the CAD is strong. This may allow leveraging currency fluctuations on top of the returns of the stocks held.