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Day Trading for a Living? (papers.ssrn.com)

543 points by ak39 · 2594 days ago · 366 comments on HN

Article summary

A study observed 19,646 individuals who began day trading in the Brazilian equity futures market between 2013 and 2015, finding that 97% lost money and only 0.4% earned more than a bank teller. The study concludes that it is virtually impossible for an individual to day trade for a living. The results suggest that day trading is highly unlikely to be a sustainably profitable undertaking. The study's findings are based on a specific market and time period, which may limit their generalizability.

Main themes

  • day trading
  • market efficiency
  • risk and reward
  • trading strategies
  • financial markets

What commenters say

  • Day trading is not a reliable way to make a living, as evidenced by the study's findings that most traders lose money.
  • The study's results are not surprising, given the efficient market hypothesis and the difficulty of beating the market through day trading.
  • The study's sample size and market focus may not be representative of all day traders, and therefore the results should be interpreted with caution.
  • Some commenters argue that day trading can be profitable for those with the right skills and knowledge, but this is rare and requires a significant amount of luck.
  • Others suggest that the study's findings are consistent with the idea that day trading is a game of luck, rather than skill.
  • The concept of learning by day trading is also called into question, with some arguing that there is no evidence that traders can improve their performance over time.
  • The discussion highlights the importance of considering risk, expected value, and opportunity cost when evaluating the potential for day trading to be a viable career path.
  • The study's results are seen as a warning to potential day traders, emphasizing the need for caution and realistic expectations when entering the market.