Do I Think About Macro? Sometimes. Do I Write About Macro? Never.
When writing about a stock, it’s always easier to use a more conventional estimate so you don’t have to argue with people about your “model”. This is one way in which writing about investing – showing your work publicly – is bad for your own investment process.
Regarding macroeconomic variables – the expected rate of nominal GDP growth, the Fed Funds Rate, the price of oil, etc. – the conventional assumption is usually the most recent reading modified by the recent trend. So, if the price of oil was “x” over the last 3-5 years, some people think 0.75x is reasonable and some think 1.25x is reasonable. But, estimates of 0.5x and 1.5x and beyond are considered unreasonable.
This “recency” issue makes it hard to have macroeconomic discussions. The level and trend of the recent past becomes the conventionally accepted answer for future estimates. The problem for you as an investor is that any application of conventional wisdom is useless. If the conventional wisdom is that the Fed Funds Rate will be 1.5% fairly soon – and you also believe the Fed Funds Rate will be 1.5% fairly soon – you may be correct, but your correctness will do you no good. Stocks are already “handicapped” according to the conventional wisdom.
The only macro assumption that can do you any good as an investor is a belief that is both:
1) Correct and
2) Out of step with conventional wisdom
Sometimes, I do have such beliefs. But, they’re never any fun to write about. So, I try not to write about them. However, in terms of my actual investing behavior – I can’t help myself from buying something I believe to be incorrectly “handicapped”. So, you will sometimes see indications of macro assumptions in my actual investments even though they don’t appear in my writing.
Fed Funds Rate
When doing my own (private) work on Frost, I can assume a normal Fed Funds Rate of 3% to 4% without any problem. But, when writing about Frost for others – I have to spend a ton of time justifying something I think seems obvious. A lot of my Frost report was wasted on discussing the Fed Funds Rate instead of discussing Frost. In my own head: I spent very little time worrying about where the Fed Funds Rate would be and when.
Oil Prices
In some cases, the mental toll writing and defending such justifications takes on you just isn’t worth it. So, you don’t write about that topic. For example, people who discussed stocks with me privately – like Quan – long knew that I was using assumptions of $30 to $70 a barrel for oil even when Brent was trading at $110 a barrel. In fact, since I started this blog 11 years ago, my assumptions for the price of oil have never changed. My process has always been “plug in $30 a barrel” and see what you …
Read more