Market Anomaly: Weekend Effect of Monday and Friday Stock Returns

Sergey Okun  This article was written by Sergey Okun – Senior Financial Analyst, I Know First, Ph.D. in Economics.


  • A correctly identifying market anomaly can generate a profit for an investor that enables him to beat the market.
  • We have tested the Weekend effect anomaly and we have found that exploration of this anomaly cannot provide an eager return for an investor today.
  • The I Know First AI algorithm can identify working market anomalies that could be difficultly recognizable for a general investor.

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