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Everyone is Bullish. Everyone is Bearish.
Two phrases often heard in markets, and often accompanied by following quote, courtesy of Warren Buffett:
Be fearful when others are greedy and greedy when others are fearful.
Great saying, but what exactly does it mean? How do you know when “others are greedy or fearful”? And how do you turn “being fearful or greedy” into an investment strategy?
As is turns out, it’s a bit more challenging than you might think.
First, you need to define fear and greed. There are a number of different ways to do so, including:
If your goal is to simply state that people seem to be fearful or greedy, any of these might suffice. But if your objective is to develop a long-term strategy around such sentiment, the definition should be a quantitative metric with enough history to determine its efficacy.
In this post, we’ll focus on the American Association of Individual Investors (AAII) survey which asks investors how they feel about the direction of the stock market over the next six months. We have weekly data for this poll going back to 1987, broken down by the percentage of investors who are bullish, bearish, or neutral in their outlook.
Next, we need to define “greedy and fearful.” This is no easy task. Do we look the % of bulls, the % of bears, or some combination thereof?
In this post, I’ve chosen to look at the spread between bulls and bears. When the spread is high, investors tend to be greedier. When the spread is low, investors tend to be more fearful.
Data Source: American Association of Individual Investors (AAII).
But what is high and what is low? That’s a subjective assessment. To some, it may be above/below the 80th/20th % percentile. To others, it may be above/below the 99th/1st percentile.
In this post, I’m going to assume the top 5% of values are evidence of “greed” and the bottom 5% of values are evidence of “fear.”
When we define fear and greed as such, we find the following with respect to forward stock market returns: below-average returns after periods of greed and above-average returns after periods of fear.
Data Source: AAII, Pension Partners. Date Range: July 1987 – January 2018.
That finding seems to square nicely with Warren Buffett’s quote, but the most critical question remains: how do you turn “being greedy or fearful” into an investment strategy.
When “others are greedy,” does that mean you should a) reduce equity exposure, b) reduce your beta, or c) go to cash?
And how long do you wait before moving back to your prior position: after a) a period of time (ex: 3-months, 6-months, 1-year), b) after sentiment has moved into a neutral area, or c) only after sentiment has moved to the opposite extreme (in this case, fearful).
When “others are fearful,” does that mean you should a) increase your equity exposure, b) increase your beta, or c) go leveraged long?
And how long do you wait before moving back to your prior position: after a) a period of time (ex: 3-months, 6-months, 1-year), b) after sentiment has moved into a neutral area, or c) only after sentiment has moved to the opposite extreme (in this case, greedy).
Unfortunately, there are no easy or definitive answers to these questions. In part II of this post, I’ll explain why that’s the case and evaluate the merits of various strategies.
Charlie Bilello is the Director of Research at Pension Partners, LLC, an investment advisor that manages mutual funds and separate accounts. He is the co-author of four award-winning research papers on market anomalies and investing. Mr. Bilello is responsible for strategy development, investment research and communicating the firm’s investment themes and portfolio positioning to clients. Prior to joining Pension Partners, he was the Managing Member of Momentum Global Advisors and previously held positions as a Credit, Equity and Hedge Fund Analyst at billion dollar alternative investment firms.
Mr. Bilello holds a J.D. and M.B.A. in Finance and Accounting from Fordham University and a B.A. in Economics from Binghamton University. He is a Chartered Market Technician (CMT) and also holds the Certified Public Accountant (CPA) certificate.
In 2017, Charlie was named the StockTwits Person of the Year. He is a contributor to Yahoo Finance and has been interviewed on CNBC, Bloomberg, and Fox Business.
You can follow Charlie on twitter here.
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The information herein was obtained from various sources. Pension Partners does not guarantee the accuracy or completeness of such information provided by third parties. The information given is as of the date indicated and believed to be reliable. Pension Partners assumes no obligation to update this information, or to advise on further developments relating to it.
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