Andy Constan Profile picture
https://t.co/SgaSuGdrox macro & beta @2Graybeards for beta. Both for investor education, Brevan Howard, Bridgewater, Salomon, Dad of 4. Go Penn, No tweet is advice

Sep 26, 2021, 13 tweets

Why are interest rates so low 101? - In this primer I will focus on the principal drivers of interest rates and discuss the impact of central bank purchases

I believe that without the incredible bond buying done by the Fed interest rates would be much lower NOT higher

I know this is counter intuitive but if you look at Japan and Europe where bond buying has been less than in the US, interest rates are lower because economic performance has been worse. In Japan the major secular pressure started sooner and in Europe it has been bad lately

So what drives interest rates. Growth, inflation and risk premium. If you have read risk premium 101 you know that Fed a purchases do lower risk premiums. That has kept pressure on rates for sure. BUT it's not the big story.

Long term trend growth depends on two major forces. 1. Population growth and 2. Productivity. Essentially people work to consume The more people and the better they are at working the more GDP

Population growth is in a permanent down trend

And while certainly there is room for emerging market citizens to "work better" productivity has been basically stable for decades

So bond prices have had huge secular headwinds for many decades and this is why real interest rates are low and are highly unlikely to rise. 10 year real rates are at an all time low since 1997 when they first began trading

Nominal interest rates are also low because inflation has had a secular decline. I have posted an article on dampedspringadvisoors.com of my view about inflation back in March when there was a full blown inflation panic. Called "Inflation and why it's likely transitory"

Inflation has popped this year but the secular pressure remains

So nominal rates are also very low and likely to stay low

The Fed has certainly bought a bunch of bonds and risk premiums have been squeezed. But that is a small thing. What matters is the secular pressures. Without the Fed purchases the risk premium portion of yield would be higher. But the economy would have been drastically worse

Growth would be well below trend, employment would be worse, and inflation would be zero or negative. That adds up to much lower rates. You can disagree on whether the Fed "Should" buy bonds. But it's hard to disagree about the impact on rates and the economy.

Oops. Tailwind

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