Here is an interesting research from UNIVERSITY OF CALIFORNIA BERKELEY about day trading:
http://faculty.haas.berkeley.edu/odean/papers/Day Traders/Day Trading and Learning 110217.pdf
So why do investors take up day trading and why do so many persist in the face of
losses? We consider three broadly defined answers to this question.
First, it could be the case that day traders do not have standard risk-averse
preferences; they may be risk-seeking or attracted to investments with highly skewed
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investments, such as lotteries, that have negative expected returns but a small probability
of a large payoff as suggested by Kumar (2009). Unlike
lottery winners, day traders must succeed on repeated gambles in order to achieve overall
success. Such repeated gambles do not tend to generate highly skewed distributions.
Second, day traders may be overconfident in their prior beliefs about their
abilities and biased in the way they learn. Several papers (e.g., Odean (1998, 1999),
Barber and Odean (2000, 2001)) argue that overconfidence causes investors to trade more
than is in their own best interest. Overconfident day traders may simply be bearing losses
that they did not anticipate.
Third, day traders may trade for non-financial motivations including
entertainment, a taste for gambling, and the desire to impress others (see, e.g. Grinblatt
and Keloharju (2009)). Some investors may enjoy the process of day trading so much that
they are willing to persist in the face of regular losses. Some investors may be attracted to
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the casino like qualities of day trading with its frequent bets, wins, and losses.*** Some
investors may choose to day trade in hopes of impressing others.â â â
For prospective day traders,
âtrading to learnâ is no more rational or profitable than playing roulette to learn.