Are there any studies on the success of day traders?

External question — Personal Finance Stack Exchange Author: Dank trader Original post: https://money.stackexchange.com/questions/140324 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. If you know about any published research paper on trade accuracy or from broker perspective that what percentage of clients are profitable in day trading.