No. of Recommendations: 26
Predicting stock returns from charts is not usually a good idea.
But I have this theory that it depends quite a bit what the chart shows : )
Have a look at this little fella
http://www.stonewellfunds.com/SmoothedRealValue.pn...tl;dr
The blue line is calculated without any hindsight, using only numbers available up to the date shown, and the distance of the current market price from that line is pretty predictive of forward returns. So you can get an idea of what the price might do in the next year or two, with a useful level of accuracy.
Discussion---
The graph shows grey spots showing the average real price in each calendar quarter, real book per share, and a line which is a smoothing of two different value estimates. All three are scaled arbitrarily to line up--for example, the book line is 1.37 times real book. The smoothing line looks pretty good to me: it adapts to slow spots so it's realistic, but it recognizes that over the long run value is really a pretty smooth trajectory.
A long time ago, I noted that not only is the price a volatile measure of what's going on, but even book per share is pretty volatile sometimes. So, I suggested a smoothing method for your value metric of Berkshire, intended to be just smooth enough that dips in
apparent value during recessions don't show up as dips in the smoothed line representing your estimate of fair value. The idea here is that dips in apparent value are always transient, because Berkshire makes money almost every day, and losses are always made up again. This may not be 100% true, but we're Berkshire people, so let's go with it.
This was the original post on the idea, intended as a smooth metric to feed a "safe withdrawal rate" table for Berkshire stock.
http://www.datahelper.com/mi/search.phtml?nofool=y...This is a follow up 5 years later, discussing the specific smoothing method I'm using here.
http://www.datahelper.com/mi/search.phtml?nofool=y...The obvious value metric to use is real book per share. Or, you can use a different metric, like my "two and a half column" method. The graph here uses the simple average of the two.
I also tweak book a bit: before even doing the smoothing, I remove any drops of more than -4%. The idea is that book per share might be a slight overestimate at a cyclical top of exuberance, but not by much, so I limit any subsequent drop to 96% of the peak-to-date.
Then I smooth the numbers, using 16 quarters of value estimates, weighting them linearly. The most recent number gets a weight of 16, the second-most-recent gets a weight of 15, all the way down to a weight of 1 for the data point 16 quarters ago. This reacts to new data, but not too much. Big sudden changes a long time ago are de-emphasized.
Now the fun part: is the ratio of current price to the current point on the smoothing line predictive of forward returns? In the past, definitely. The specific exercise I did this morning looked at the ratio of price to smoothing line, and average real forward returns over the next two years. Berkshire's valuation levels have been much lower since 2008, so that makes the best predictor. It suggests that the next two years should be expected to be inflation - 1.4%/year. Using all the data from 2005, it suggests one might expect inflation - 1.5%/year. Using data starting in January 2000 (which includes some periods of higher valuation multiples) it suggests you might expect inflation + 1.8%/year.
The future may not resemble the past. And my valuation metrics, or their smoothing, may be bogus. But if (if) things are somewhat like the past, we aren't headed into a strong year or two for the stock price of Berkshire.
In case anybody cares to follow up, I used stock price $424.44 per B share, and the forecast ending price is the real average closing price 1.5 to 2.5 years from now measured in today's dollars. The new CPI figure just came out, 314.175.
As always, the forecast will be wrong, but the notion is that it's a 50/50 shot whether it will be too high or too low.
FWIW, here are the observations: dividing up the price-to-smoothed-value ratios January 2008 to January 2022 into 20 equally sized buckets of starting days, what were the average annualized real forward returns in the next two years in each bucket? With holding period endpoints 1.5 to 2.5 years later.
19.3% (Cheapest 5% of starting dates)
17.7%
16.8%
16.2%
15.1%
13.3%
12.0%
11.2%
10.4%
9.5%
8.7%
7.9%
7.3%
6.8%
6.1%
5.2%
4.0%
2.4%
0.0%
-7.7% (Most expensive 5% of the time)
Jim