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PROYECTO INTERNACIONAL PIERRE AUGER

In document P R E S E N T A C I Ó N (página 66-70)

ACTIVIDADES PARTICULARES GESTIÓN DE LA CALIDAD

PROYECTO INTERNACIONAL PIERRE AUGER

So, do you behave in a rational manner and predominately sell los- ers, or are you affected by your psychology and have a tendency to sell your winners? Several studies provide insight into what investors really do.

One study examined 75,000 round-trip trades of a national bro- kerage house.2A round-trip trade is a stock purchase followed later by the sale of the stock. Which stocks did investors sell—the winners or the losers? The study examined the length of time the stock was held and the return that was received. Are investors quick to close out a position when it has taken a loss or when it has a gain? Figure 5.1 shows the average annualized return for positions held 0–30 days, 31–182 days, 183–365 days, and over 365 days. Figure 5.1 indi- cates that investors are quick to realize their gains. The average annu- alized return for stocks purchased and then sold within the first 30 days was 45%. The returns for stocks held 31–182 days, 183–365 days, and over 365 days were 7.8%, 5.1%, and 4.5%, respectively.

It is apparent that investors are quick to sell winners. If you buy a stock and it quickly jumps in price, you become tempted to sell it and lock in the profit. You can now go out and seek pride by telling your neighbors about your quick profit. On the other hand, if you buy a stock and it goes down in price, you wait. Later, if it goes back up, you may sell or wait longer. However, selling the winner creates tax payments!

INVESTMENT MADNESS:How psychology affects your investing…and what to do about it 49

This behavior can be seen after initial public offering (IPO) shares hit the market. Shares of the IPO are first sold to the clients of the investment banks and brokerage firms helping the company go public. As we will discuss in detail in the next chapter, the price paid by these initial shareholders is often substantially less than the initial sales price of the stock on the stock exchange. These original share- holders often quickly sell the stock on the stock market for a quick profit—so often, in fact, that it has a special name: flipping IPOs. There are times, however, that the IPO does not start trading at a higher price on the stock exchange. Sometimes the price falls. The volume of shares traded is lower for these declining-price IPOs than for the increasing-price IPOs. The original investors are quick to flip increasing-price IPOs, but they tend to hold the declining-price IPOs hoping for a rebound.

Another study by Terrance Odean examined the trades of 10,000 accounts from a nationwide discount brokerage.3 He found that, when investors sell winners, the sale represents 23% of the total gains of the investor’s portfolio. In other words, investors sell the big win- ners—one stock representing one quarter of the profits. He also found that, on average, investors are 50% more likely to sell a winner than a loser. Investors are prone to letting their losses ride.

Do you avoid selling losers? If you hear yourself in any of the fol- lowing comments, you hold on to losers.

50 SEEKING PRIDE AND AVOIDING REGRET chapter 5

ANNUALIZED RETURN FOR DIFFERENT INVESTOR HOLDING PERIODS. Figure 5.1 0 5 10 15 20 25 30 35 40 45 50 0–30 31–182 183–365 >365

Holding Period (Days)

■ If this stock would only get back to what I paid for it, I would sell it.

■ The stock price has dropped so much, I can’t sell it now! ■ I will hold this stock because it can’t possibly fall any

farther.

Sound familiar? Many investors will not sell anything at a loss because they don’t want to give up the hope of making their money back. Meanwhile, they could be making money somewhere else. Selling Winners Too Soon and Holding Losers Too Long Not only does the disposition effect predict the selling of winners, it also suggests that the winners are sold too soon and the losers are held too long!

What does selling too soon or holding too long imply? Selling a winner too soon suggests that it would have continued to perform well for you if you had not sold it. Holding losers too long suggests that your stocks with price declines will continue to perform poorly and will not rebound with the speed you hope for.

Do investors sell winners too soon and hold losers too long, as suggested by the disposition effect? Odean’s study found that, when an investor sold a winner stock, the stock beat the market during the next year by an average of 2.35%.4In other words, it continued to perform pretty well. During this same year, the loser stocks that the investor kept underperformed the market by –1.06%. In short, you tend to sell the stock that ends up providing a high return and keep the stock that provides a lower return.

So we’ve seen that the fear of regret and the seeking of pride hurts your wealth in two ways:

■ You are paying more in taxes because of the disposition to sell winners instead of losers.

■ You earn a lower return on your portfolio because you sell the winners too early and hold on to poorly performing stocks that continue to perform poorly.

The Disposition Effect and the Media

Active investors follow the economic and financial news very closely. Given your disposition to sell winners and hold losers, how do you

INVESTMENT MADNESS:How psychology affects your investing…and what to do about it 51

react to a news story? Buy, sell, hold? I examined the trades of indi- vidual investors with holdings in 144 New York Stock Exchange companies in relation to news reports.5I specifically studied investor reaction either to news about the company or to news about the economy. News about a company mostly affects the price of just that company’s stock, whereas economic news affects the stock prices of all companies. The results are interesting. Good news about a com- pany resulting in an increase in the stock price induces investors to sell (selling winners). Bad news about a company does not induce investors to sell (holding losers). This is consistent with avoiding regret and seeking pride.

However, news about the economy does not induce investor trading. Although good economic news increases stock prices and bad economic news lowers stock prices, this does not cause individ- ual investors to sell. In fact, investors are less likely than usual to sell winners after good economic news. Investor reaction to economic news is not consistent with the disposition effect.

This illustrates an interesting characteristic of regret. After tak- ing a stock loss, investors feel stronger regret if the loss can be tied to their own decision. However, if the investor can attribute the loss to things out of his or her control, then the feeling of regret is weaker. For example, if the stock you hold declines in price when the stock market itself is advancing, then you have made a bad choice and regret is strong. In this case, you would avoid selling the stock because you want to avoid the strong regret feelings. Alternatively, if the stock you hold drops in price during a general market decline, then this is divine intervention and out of your control. The feeling of regret is weak and you may be more inclined to sell.

In the case of news about a company, your actions are consistent with the disposition effect because the feeling of regret is strong. In the case of economic news, you have a weaker feeling of regret because the outcome is considered out of your control. This leads to actions that are not consistent with the predictions of the disposition effect.

In document P R E S E N T A C I Ó N (página 66-70)