Can ignorance beat the stock market




















The "investor recognition hypothesis" holds that in informationally incomplete markets, investors are not aware of all securities available for investment. Therefore, stocks with lower investor recognition need to offer higher returns to compensate their investors for being long in securities with less information available and less media coverage.

Consequently, in theory, stocks with higher investor recognition earn lower returns than stocks with lower visibility. Several authors found a relationship between media coverage and returns Engelberg and Parsons, ; Tetlock, , ; Hillert et al. For instance, Fang and Peress empirically found a stable, negative relationship between media coverage and required rate of return and attributed that finding to the effect highlighted by Merton Borges et al. The idea was to take advantage of a fast and frugal decision process to see if it was possible to compile a better portfolio with less knowledge than an investor would with access to plenty of information and resources.

The idea was to take advantage of the recognition heuristic and form an investment portfolio relying only on one piece of information: company name recognition. No other information would be necessary e. Financial markets are quite complex and few investors are able to consistently beat the market over the years. The efficient market hypothesis EMH introduced by Fama assumes that investors are unboundedly rational, which leads to the conclusion that no one can consistently achieve higher returns than the market on a risk-adjusted basis, given the information available at the time the investment is made.

On the basis of the survey, eight recognition-based portfolios were built. The "domestic recognition" portfolios were compiled of stocks that more than 90 per cent of the participants recognized for their country. The "international recognition" portfolios had the 10 most recognized stocks from the foreign country. The results obtained by Borges et al. In the USA, the "domestic recognition" portfolio performed below the market index and the mutual fund industry.

However, the "international recognition" portfolio obtained quite impressive results. The aggregate results were very positive for the recognition heuristic as it had beaten the market in six out of eight tests, often by a large margin. First, following the findings of Buzzell et al. One more reason for good performance of the recognition heuristic is the link between above-average profitability and core competence.

Finally, a company name has value and it is important information for investors. The above-average returns presented by Borges et al. The call for further investigation under different market conditions was fulfilled by Boyd This author attempted to replicate the same experiment as Borges et al.

The method used was the same, surveying a group of students at a US business school and another group in non-business courses, with a total of participants. From the participant responses, a single high-recognition test portfolio was constructed for both groups business and non-business students , using the 23 stocks recognized by more than 90 per cent of the participants.

During the following six-month period, the market portfolio lost 4. Out of curiosity, an additional test was also performed. A portfolio was built containing the 20 least recognized companies by the combined participant groups.

The results were quite surprising. This portfolio yielded a gain of According to Boyd , p. A similar study was performed by Andersson and Rakow attempting to replicate the findings of Borges et al. Therefore, they performed four different surveys. In the first, 53 UK psychology students provided recognition data for the 30 companies listed on the Italian MIB30 stock index.

The second study surveyed 52 UK psychology students and 15 Swedish business students about recognition of UK, Swedish and Italian stocks. The shares selected were those with the highest volume for each stock index. In the third study, 70 UK psychology students, 78 Austrian business students and 36 Swedish business students provided recognition data for Austrian, Swedish and German stocks. A list of 48 stocks was on the survey, of which 9, 16 and 23 were randomly extracted respectively from the Austrian prime list, the Swedish A-List and the German prime standard.

Finally, in the fourth study 15 Swedish business students provided recognition data for UK, Swedish and Italian stocks. Here, the stocks under analysis were the same 45 as in the second study, excepting one that had meanwhile ceased to trade. Contrary to Borges et al. Therefore, "ignorance" has no special advantage or disadvantage over sophisticated knowledge. Also, in contrast with the findings of Borges et al. One can then observe that although several studies have concluded that individuals tend to use heuristics in an adaptive way Payne et al.

The study of the impact of recognition heuristic in stock market returns first requires that the recognized stocks are identified apart from the unrecognized stocks. In this study, two different approaches were used. As in Borges et al. To complement this paper, an additional methodology was adopted. Google Trends was used to access keyword internet search volume variation across time as a proxy for investor recognition.

Subsequently, two investment strategies were designed accordingly to the recognition heuristic principles and their profitability were compared to the market return. In other words, it was expected that the most recognized companies would present higher investor attention on the web than the less recognized companies. Aligned with the methodology followed by Borges et al. Additionally, he was requested to answer the frequency of investments made in financial markets such as stocks, mutual funds and futures.

The last question aimed to discover which stocks are most well-known from the list presented. The company names on the list were replicated from Thomson Reuters Datastream to avoid arbitrariness and ensure that participants are presented with a standardized name selection process. The survey was presented to participants through Google Forms and it was available in two languages: Portuguese and English.

The participant had the option to choose the most suitable version. To distribute the survey in a more effective and faster method, it was decided that the webpage links for the survey should be provided through social networks, such as Facebook and LinkedIn. Additionally, a portfolio was also constructed of the stocks whose company names were recognized by less than 10 per cent of. These two portfolios were then measured against the market portfolio to compare the performance of both strategies.

To avoid very similar returns to the market portfolio due to composition, the individuals who recognized more than 90 per cent of the companies, i. Each portfolio was valued following the equally weighted rule, so each stock may have exactly the same preponderance over the recognized portfolio. The survey was implemented in December , and the portfolio was built using the Thomson Reuters Datastream opening price on 5 January The holding period was for five months, and the closing price on 5 June was chosen for liquidating the portfolios.

Given that Google search volume adequately proxies for investor attention and assuming that financial markets are characterized by incomplete information, a negative and persistent interdependence between changes in search volume and future returns would be expected Fang and Peress, Barber and Odean defend that investors are able to choose from a large set of stocks when they want to buy; nevertheless, they only have a limited choice when selling securities.

Subsequently, the increment of stock attraction should affect the buying side more than selling, mostly by particular and uninformed investors. Da et al. Measuring investor recognition is not a simple task. For instance, Fang and Peress measured the number of times that the company name appears in the newspaper as a proxy, but:. Other measures of investor attention, such as analyst coverage, institutional holdings, or advertisement expenditures, suffer from similar shortcomings Fang and Peress, , p.

Nowadays, the number of search queries as an indicator of people interest has great appeal. The internet is spread across the globe and practically every investor is able to access company information on it. Search volume seems appropriate, as an internet user will only actively "Google" a specific keyword if he or she is interested in the object underlying the search term. To obtain the search volume for each company, Da et al.

Bank et al. The average internet user is expected to search for a firm on Google by its company name and it is not likely to use the international securities identification numbers ISIN , German securities identification code WKN or other technical stock symbols. They concluded that:. In particular, an increase in Internet search volume is related to higher trading activity, improved stock liquidity, and leads to higher future returns in the short-run Bank et al.

In this study, we used the same approach as Bank et al. The purpose of the analysis was to infer whether increments in Google searches may lead to higher returns for the related stock in the following month. Furthermore, Google Trends has the option to specify the environment for each keyword to be used.

For instance, if we insert ALLIANZ in the search tool, we have the option to specify the search volume for searches related to the financial services company. This option was used to empower the effectiveness of the search, to select the searches that concern the company name and reject the searches that may be related to other topics. As Google is the most used search engine worldwide, the choice of Google Trends was obvious to proceed with our study.

The only downside is that the search volume of a specific keyword is not given in absolute terms, but as a value relative to the total number of searches on Google during a given time interval. Therefore, for each keyword analysed this relative value is normalized to the interval between 0 and , where represent the period in which the search volume was the highest in the time interval under analysis and 0 is obtained when the search volume does not reach a designated search volume threshold Bank et al.

The time interval was chosen based on the data availability for Google Trends, as January was the starting point for Google registering of search volume. Also, having slightly more than 10 years of data allows measuring the correlation between increases in stock returns with previous increments of company popularity. To perform this analysis monthly data was used. Furthermore, as in Bank et al. From these, all the companies where the search volume equals zero for two or more consecutive months were excluded.

Also, following the methodology adopted by Bank et al. But your stock drops to In the short-term, stock prices behave irrationally. In the long term, they are surprisingly rational. If you worry about high valuations, and you want to avoid investing, remind yourself that things will even out in time.

Keep investing and play the long game. There are always winners, and there are also a lot of losers. Some will collapse and never come back. You look at the price, and it says Why am I not back at ?

Losing hurts more—in your stomach, but also in the bottom line. If you avoid big losses, you avoid this predicament. There are people in the world who are addicted to trading stocks. They see it as a game, and they only care about winning. Many professionals trade with millions of dollars.

If you intend to be an active trader, ask yourself: Do I have an edge? Do I have the same passion as these crazy people who are glued to their screens? If you answered no twice, just become a passive investor or hire a financial advisor to do everything for you. Scared money is the money you absolutely need to survive. But most people look at all their money as scared money.

I was like that for most of my life. But then I started practicing Stoicism and applied it to my money. Not being afraid of parting with your money is the only way to win big as an investor. As the rapper Jeezy once said:. Inflation is good for stocks Every few years, people worry about inflation, especially now in , and moving into And why is a pool of "dumb" money so important for active managers?

Active managers need victims they can exploit, and that usually means retail investors. The research indicates on average active retail investors underperform their benchmarks, even low-cost index funds, even before costs or taxes. One reason is they trade too much. But they also exhibit really perverse stock picking. They tend to buy stocks that have sub-par returns and they sell stocks that go on to earn above-average returns.

I have no doubt some are doing well as momentum traders. But they are not picking stocks — they are playing momentum without any real knowledge of what these companies are doing. They don't have an edge, and experience tells us that this ends badly.

The ones making the real money are the people on the other side — that's why high-frequency trading firms are so eager to get their order flow. One way Robinhood makes money is by selling its order flow. They are now being investigated for failing to adequately disclose this to investors. It's so easy to trade stocks on your phone now, it's almost like stock trading is a proxy for sports betting.

Yes, this kind of betting activity lights up the same part of your brain that gets lit up when you are sitting in front of slot machines. The big mistake everyone makes is they assume the future will look like the past. It doesn't. Past performance of active managers does not indicate future performance. It has no predictive value. It's likely because of mean reversion. In the long run — and I am talking over decades — everything tends to smooth out.

Institutional investors will typically fire a fund manager who outperforms after three years and hire someone who has been outperforming.

Studies indicate this is a bad strategy — you're essentially buying a fund manager who has expensive holdings because he or she has been outperforming, and firing the manager who has cheaper holdings. So you're buying high and selling low. The opposite of what you're supposed to do. I don't doubt that some managers have stock-picking skills, but yes, for those who outperform it's mostly a matter of luck.

And the ones who are successful see increased cash flows that creates the seeds of destruction for future outperformance. Where does high-speed trading and quantitative analysis fit in? Is there any evidence that quantitative analysis produces alpha? The track record of Renaissance Technologies shows that high frequency trading can generate alpha by exploiting what might be called micro-inefficiencies in the market.

Firms like them are extracting profits from the rest of investors. And individual investors when they trade are likely facing firms such as Renaissance on the other side. They should be asking who the sucker is in that trade. Don't we still need active management to pick stocks? What happens if we all just become index investors? As the trend to passive continues, the remaining players are more and more skillful.

There are investors who work to keep the market efficient. For example, if a stock price was perceived to be too expensive you would see more IPOs and secondary offerings by companies raising cheap capital. And you would see more companies using their stock to buy up other companies. If prices were perceived to be too low you would see more stock buybacks, acquisitions, and private equity taking companies private. For example, if Tesla goes way up, the company could take advantage of that by issuing a lot of new shares, which would likely push prices down.

If the evidence does not support active stock picking as a strategy, how come it's still so popular? It's not — the public is finally catching on. Though the trend is slow, the amount of money going to active stock management has been declining for more than two decades. The main issue is that Wall Street is engaged in a propaganda war.

Wall Street wants you to believe active management works so you'll pay them the high fees.



0コメント

  • 1000 / 1000