September 8, 2022

If They Can Predict the Weather, Why Not the Stock Market?

Recent Blog Posts

Content reposted from If They Can Predict the Weather, Why Not the Stock Market? by Efficient Advisors.

Humans have always had a strong desire to know the future. Soon after writing was developed in ancient Mesopotamia the Babylonians began using it to catalog thousands of auguries—observances of natural phenomena that they believed could predict major events.1

We still want to know what’s going to happen in the near future. And to meet that demand in the area of meteorology the Farmer’s Almanac will soon publish its predictions for next year’s weather.

For more than 200 years, farmers and lots of other people have looked forward to and relied on the Almanac’s forecast. And with a self-proclaimed accuracy of more than 80%, it seems like that confidence is well founded.2

So how does the Farmers’ Almanac come up with these predictions? They won’t say exactly. But they do admit their method uses some combination of sunspot activity and secret mathematical formulas. Still, if these old-fashioned methods manage to beat the accuracy of weather scientists using the latest technology, that can seem pretty impressive.

Of course, determining the Almanac’s specific accuracy is not easy. You need to compile and analyze quite a bit of historical weather data and then see how it matches up with their historical predictions.

Several years ago, meteorologist Joel Gratz did just that. He tested the Almanac’s predictions for winter weather against actual measurements and found that it was right about half the time. That’s roughly what you’d expect from a series of coin flips. Meanwhile it missed major climatic events, like the severe drought in California, which would have been very useful to know about in advance.3

There are many forecasters who employ similar “black box” methods to try to predict the stock market. But aside from the occasional lucky guess, they cannot consistently foretell either individual stock prices or market movements as a whole. Because investor expectations and new information are priced in almost immediately, it’s nearly impossible to identify guaranteed “bargains” in advance.

Global stock and bond markets reflect the new and unknowable information in real time. Unfortunately, nobody has the “new and unknowable information” Almanac.

But this does not dissuade millions of people from trading on their own or someone else’s prediction, buying and selling in the hope of short-term gains.

Like with the Farmers’ Almanac, many want to believe that somebody really has cracked the code to the future.

The prudent investor, however, will ignore the ancient urge to follow the auguries and continue to save in a disciplined manner, regardless of what analysts are predicting. And he or she will enlist the help of a trusted advisor, not only to create a customized plan that’s designed to help weather the unknowable nature of the future, but also helps them stick with it for the best chance of success.




Efficient Advisors’ Disclosure:

The views expressed herein are exclusively those of Efficient Advisors, LLC (‘EA’), and are not meant as investment advice and are subject to change. All charts and graphs are presented for informational and analytical purposes only. No chart or graph is intended to be used as a guide to investing. EA portfolios may contain specific securities that have been mentioned herein. EA makes no claim as to the suitability of these securities. Past performance is not a guarantee of future performance. Information contained herein is derived from sources we believe to be reliable, however, we do not represent that this information is complete or accurate and it should not be relied upon as such. All opinions expressed herein are subject to change without notice. This information is prepared for general information only. It does not have regard to the specific investment objectives, financial situation and the particular needs of any specific person who may receive this report. You should seek financial advice regarding the appropriateness of investing in any security or investment strategy discussed or recommended in this report and should understand that statements regarding future prospects may not be realized. You should note that security values may fluctuate and that each security’s price or value may rise or fall. Accordingly, investors may receive back less than originally invested. Investing in any security involves certain systematic risks including, but not limited to, market risk, interest-rate risk, inflation risk, and event risk. These risks are in addition to any unsystematic risks associated with particular investment styles or strategies.


Winnow Wealth, LLC (“Winnow Wealth”) is a Registered Investment Adviser.

The information presented is not investment advice – it is for educational purposes only and is not an offer or solicitation for the sale or purchase of any securities or investment advisory services. Investments involve risk and are not guaranteed. Be sure to consult with a qualified financial adviser when making investment decisions.

This content is intended to provide general information about Winnow Wealth. It is not intended to offer or deliver investment advice in any way. Information regarding investment services are provided solely to gain an understanding of our investment philosophy, our strategies and to be able to contact us for further information.

All information has been obtained from sources believed to be reliable, but its accuracy is not guaranteed. There is no representation or warranty as to the current accuracy, reliability or completeness of, nor liability for, decisions based on such information and it should not be relied on as such.

The views expressed in this commentary are subject to change based on market and other conditions. These documents may contain certain statements that may be deemed forward‐looking statements. Please note that any such statements are not guarantees of any future performance and actual results or developments may differ materially from those projected. Any projections, market outlooks, or estimates are based upon certain assumptions and should not be construed as indicative of actual events that will occur.

Past performance is no guarantee of future returns.

Different types of investments involve varying degrees of risk. Therefore, it should not be assumed that future performance of any specific investment or investment strategy will be profitable.

Additional Important Disclosures may be found in the Winnow Wealth Form ADV Part 2A. For a copy, please Click Here.

Investment advisory services also offered through Brookstone Wealth Advisors (BWA), a registered investment advisor. Winnow Wealth & BWA are independent of each other.