There are many global macro investing strategies that make use of the yield curve. While primarily used to trade bonds, there are also several good uses for trading stocks and currencies as well. In fact as powerful as the yield curve is, there is likely a few yield curve strategies for every asset class out there.

The Treasury yield curve is the curve you get when you plot out the yields for different maturities. For instance if the 90-day T-Bill is at .2 percent and the 10-year T-Note is yielding 3.5 percent you have an up sloping yield curve as the long dated Treasuries are paying a higher yield then the short dated Treasuries. Usually you would also plot out the two year, five year, and thirty year along with the ninety day and ten year. This will give you a better picture for what the yield curve is really saying.

So how do you apply the yield curve to your trading? Well there are a few main rules of thumb. An upwards sloping yield curve is typically bullish for the economy and stocks, whereas a downwards sloping or inverted yield curve is typically bullish for bonds.

So how does this help your trading? Well if the curve is steep then there is little chance that bonds will be able to stage a very robust rally. At the same time it might be a great time to go long stocks. If the curve is sloping down then it is a harbinger of things to come and the economy is ready to contract and therefore it is kind of a sell signal for stocks. At the same time if the curve is inverted then it is a great time to look at going long bonds as the Fed will likely begin a interest rate easing cycle and therefore driving up bond prices.

If the curve is inverted however business is usually about to slow down, rates will be lowered, and bonds will climb. This is because with the incentive of the banks to lend now gone they will throttle back and the spigots of available money run dry. In turn this forces the Fed to lower short term rates, the Fed Fund rate, in order to spur business growth once again. When they lower rates bonds inevitably go up.

Bonds and rates are like a piece of wood straddled on a log. If you sit at one end the other end goes up. If bonds are at one end yields are at the other. When yields go down bonds go up and vice versa. This is almost always the case, especially in an inflation environment.

So if you are a global macro investor that is using the yield curve you can forecast when to get in and when to get out of stocks and bonds based on the macro economy. At the same time you can use the information and trade currency differentials as well.

Neither of these relationships works perfect every time so it is important to still use risk controls. In fact if you had gone long stocks in 2008 when they lowered rates you would have lost a lot of money, but more often then not this trade and the concept behind it work well. Look at the yield curve, learn from it, and apply it to your market forecasting toolbox.