There is a lot of talk about interest rates and bonds these days – for good reason. You see, interest rates have been in a downtrend for decades (as you’ll see later). When interest rates are falling, the price of bonds go up. I wrote in “Why So Stock Market Focused?” that you would have actually been better off investing in bonds the past 15 years over the S&P 500 stock index.

However, the risk for bond investors who have a fixed bond allocation is that interest rates eventually trend up for a long time and their bonds fall.

This year we see the impact of rising rates and the impact of falling bond prices in the chart below of the 20+ year Treasury bond. It’s down -15% off its high and since the yield is only around 2.5% the interest only adds about 1% over this period for a total return of -14.1%. Up until now, this long term Treasury index has been a good crutch for a global allocation portfolio. Now it’s more like a broken leg.

But, that’s not my main point today. Let’s look at the bigger picture. Below is the yield (interest rate) on the 10-Year U.S. government bond. Notice that the interest rate was as high as 9.5% in 1990 and has declined to as low as 1.5%. Just recently, it’s risen to 2.62%. If you were going to buy a bond for future interest income payments, would you rather invest in one at 9.5% or 1.5%? If you were going to lend money to someone, which rate would you prefer to receive? What is a “good deal” for you, the lender?

I like trends and being positioned in their direction since trends are more likely to continue than reverse, but they usually do eventually reverse when inertia comes along (like the Fed). If you care about managing downside risk you have to wonder: How much could this trend reverse and what could its impact be on fixed bond holdings? Well, we see below that the yield has declined about -70%. If we want to manage risk, we have to at least expect it could swing the other way.

One more observation. Germany is one of the largest countries in the world. Since April, the 10-year German bond interest rate has reversed up very sharp. What if U.S bonds did the same?

As I detailed in “Allocation to Stocks and Bonds is Unlikely to Give us What We Want” bonds are often considered a crutch for a global asset allocation portfolio. If you care about managing risk, you may consider that negative correlations don’t last forever. All trends change, eventually. You may also consider your risk of any fixed positions you have. I prefer to actively manage risk and shift between global markets based on their directional trends rather than a fixed allocation to them.

The good news is: by my measures, many bond markets have declined in the short term to a point they should at least reserve back up at least temporarily. What happens after that will determine if the longer trend continues or begins to reverse. The point is to avoid complacency and know in advance at what point you’ll exit to cut losses short…

As they say: “Past performance is no guarantee of the future“.