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Two Reasons For The Flattening US Yield Curve
BY ANDY MACKEN - 23/04/2018 | VIEW MORE ARTICLES BY THE MONTGOMERY TEAM

If you follow global financial trends, you would have noted the continual (and recently accelerating) decline in the slope of the US yield curve. Recently, it has narrowed to a level not seen since 2007.

The curve shows the difference in interest rate that you would receive from lending to the US government for, say, 2 years versus 30 years. You can see this spread between the yields of 2YR and 30YR US Treasury bonds in the chart below:

Difference between 2YR and 30YR US Treasury Bonds

2042018_2 Image 1

Source: Bloomberg

Why is this happening?

Well, first let’s analyse the drivers of this change in steepness of the curve. Shown below is the US Treasury yield curve as it stands today (in green) and as it stood 18 months ago (in yellow). The yield curve simply shows the interest rate of a new loan made to the US Treasury on the vertical axis versus the tenor of that loan. Typically, yield curves are upwards sloping because investors would typically demand a higher interest rate if they are lending to the US Treasury for a longer period.

US Treasury Yield Curve (Today in green; versus 18 months ago in yellow)

20042018_2 Image 2

Source: Bloomberg

Now, from the chart above, something jumps out immediately. The flattening of the curve has been driven almost entirely from increases at the short end. The long end has not been falling – and has even increased slightly.

Ok, so the question is, why such an increase at the short end of the curve?

Well the obvious answer is that the Federal Reserve has increased its policy rate by 1.25 per cent over this period.

But we believe there is a second part to this answer which relates to US fiscal policy in recent months. Following the Trump tax cuts and recent budget expansion, the US Treasury has been forced to ramp up its issuance of US Treasury Bills and Notes to keep the government funded. We can clearly see this in the chart below.

20042018_2 Image 3

Source: US Treasury; MGIM

But what is most interesting is that two-thirds of this new, ramped-up issuance has been at the short end of the curve, as illustrated by the chart below. Such a ramp-up of new issuance would logically result in a slightly higher interest rate required to attract the level of borrowings needed by the US Treasury. We believe this significant ramp-up in new issuance by the US Treasury at the short end of the curve is a meaningful contributor to the flattening yield curve that is currently being observed.

20042018_2 Image 4

Source: US Treasury; MGIM



View More Articles By The Montgomery Team

Roger Montgomery is the Chief Investment Officer of Montgomery Investment Management, montinvest.com, and author of blog.rogermontgomery.com.

Roger's step-by-step guide to valuing the best stocks and buying them for less than they're worth, Value.able, is available exclusively at rogermontgomery.com. Skaffold is an online stock-picking application that rates ASX-listed stocks from A1 to C5. Watch a demo of Skaffold at www.skaffold.com.



 

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