Swap hedging a currency hedge
I decided to try this in order to get a feel of it. As far as the interest rates are concerned, it works. You can set it up and forget about holding time as long as the rates and positions stay within a range. The problem is that currency volatility turns the interest paid for shorting USD/JPY into noise at best. And if you look to past performance over a year... Let's just say there is a reason they pay you to hold NZD. So, unless you think buying NZD/USD is a good idea to begin with, you should put your money elsewhere.
"Nothing necessarily has to ""benefit."" Right now, what primarily drives demand for gold is its perceived use as a hedge against the inflation of fiat currency. I.e. when inflation strikes, the price of gold goes up rapidly. Thus, for a given currency, gold decreasing in price is almost always a signal that the currency is increasing in value. However, it may be that at some point in time people everywhere just decide that gold is no longer worth using as an inflation hedge, and thus the price collapses simply because demand collapsed. No corresponding ""benefit""." I work at a FOREX broker, and can tell you that what you want to do is NOT possible. If someone is telling you it is, they're lying. You could (in theory) make money from the SWAP (the interest you speak of is called SWAP) if you go both short and long on the same currency, but there are various reasons why this never works. Furthermore, I don't know of any brokers that are paying positive SWAP (the interest you speak of is called SWAP) on any currency right now. Would my high-risk investment choices, aside from the main question, have any bearing on the road I want to go down and test (managing mutual/hedge funds)? Absolutely!  First of all, understand that hedge fund managers are managing other people's money.  Those people desire a certain risk profile and expected return, so your hedge fund will need to meet those expectations.  Plus, hedge fund managers don't typically get fixed fees alone - they also get a percentage of any gains the fund makes; so managers have a vested interest in making sure that hedge funds perform well. Wow this is a bad article.  This is a notional amount....  Eg.  $500M US equity fund in Australia wants to hedge their US exposure.   They buy a $500M forward contract and roll it over quarterly.  Each quarter they settle on the difference (let's say $50 - 500k +/- depending on the way FX moves).  What matters is the amount owed...not the notional value.  Same goes for interest rates. $1B bond fund could short the 10yr to lower interest rate sensitivity...the end value isn't $1B. It's whatever they owe on the difference at settlement.  The issue of swap spreads or settlement/liquidity is so much more important! Use an exchange traded fund ETF, namely SPDR MSCI Japan EUR Hdg Ucits ETF. It is hedged and can be bought in the UK by this broker State Street Global Advisors on the London Stock Exchange LSE.  Link here. Article on JAPAN ETF hedged in Sterling Pound here. International exchange rates are arbitraged. If I exchange A for B for C and then back to A again, I'll end up with the same amount ex trade fees. Assume this isn't the case. Clearly if I'd gain, someone else loses and I'd make millions by rapidly exchanging. Now assume that I'd lose money on that route. That must be because the reverse route, A->C->B->A gains money. (Again, assuming no fees) So in this case you'd just look at fees. (And as Ganesh points out, that may include future fees) It's the same as with equities. If you're just buying foreign currencies to hold, you can't lose more than you invest. But if you're buying derivatives (e.g. forward contracts or spread bets), or borrowing to buy on margin, you can certainly lose more than you invest. "When you hold units of the DLR/DLR.U (TSX) ETF, you are indirectly holding U.S. dollars cash or cash equivalents. The ETF can be thought of as a container. The container gives you the convenience of holding USD in, say, CAD-denominated accounts that don't normally provide for USD cash balances. The ETF price ($12.33 and $12.12, in your example) simply reflects the CAD price of those USD, and the change is because the currencies moved with respect to each other. And so, necessarily, given how the ETF is made up, when the value of the U.S. dollar declines vs. the Canadian dollar, it follows that the value of your units of DLR declines as quoted in Canadian dollar terms. Currencies move all the time. Similarly, if you held the same amount of value in U.S. dollars, directly, instead of using the ETF, you would still experience a loss when quoted in Canadian dollar terms. In other words, whether or not your U.S. dollars are tied up either in DLR/DLR.U or else sitting in a U.S. dollar cash balance in your brokerage account, there's not much of a difference: You ""lose"" Canadian dollar equivalent when the value of USD declines with respect to CAD. Selling, more quickly, your DLR.U units in a USD-denominated account to yield U.S. dollars that you then directly hold does not insulate you from the same currency risk. What it does is reduce your exposure to other cost/risk factors inherent with ETFs: liquidity, spreads, and fees. However, I doubt that any of those played a significant part in the change of value from $12.33 to $12.12 that you described."