Quote from illiquid:
I think this perspective is completely wrong.
The question is how much of an "edge" does taking advantage of interest rate differentials inherently have? On the surface it's not much better than just buying a 10-yr note and holding for the 4% or so -- in fact it's much worse, given the directional risk. I guess what I'm saying is that if anyone's "carry" system has any discrete edge to it, it's not because of the yield differentials at all, but the skill in timing and managing "given" positions. Anyone can see that going long AUD or GBP while shorting JPY will maximize your interest income, so by default this in itself cannot be an edge, as the market has already "priced in" the premium of that pair. Why not just open a futures account, place your capital in T-bills to earn risk-free interest, and just trade (or in your terms, "manage") directionally?