D. Alternative Reasons to Hold Losers and Sell WinnersPrevious research offers some support for the hypothesis that investors sell
winners more readily than losers, but this research is generally unable to
distinguish among various motivations investors might have for doing so.^5
Recent studies (some of which are discussed in greater detail below) have
found evidence of the disposition effect in the exercise of company stock
options (Heath, Huddart, and Lang 1999, Core and Guay 2001), the sale
of residential housing (Genesove and Mayer 2001), and among profes-
sional futures traders (Locke and Mann 1999), Israeli investors (Shapira
and Venezia 2001), and Finnish investors (Grinblatt and Keloharju 2001).
We believe the disposition effect best explains the tendency for investors to
hold losers and sell winners. In this section, we present evidence that allows
us to discount competing explanations for this investor behavior.
INDIVIDUAL INVESTORS 549
Figure 15.2. Proportion of gains realized and proportion of loses realized.
(^5) Starr-McCluer (1995) finds that 15 percent of the stock-owning households interviewed in
the 1989 and 1992 Surveys of Consumer Finances have paper losses of 20 percent or more.
She estimates that in the majority of cases the tax advantages of realizing these losses would
more than offset the trading costs and time costs of doing so. Heisler (1994) documents loss
aversion in a small sample of futures speculators. In a study of individual federal tax returns,
Poterba (1987) finds that although many investors do offset their capital gains with losses,
more than 60 percent of the investors with gains or losses realized only gains. Weber and
Camerer (1995) report experimental evidence of the disposition effect. Lakonishok and Smidt
(1986) and Ferris, Haugen, and Makhija (1988) find a positive correlation between price
change and volume. Bremer and Kato (1996) find the same correlation for Japanese stocks.
Such a correlation could be caused by investors who prefer to sell winners and to hold losers,
but it could also be the result of buyers’ trading preferences.