With a good stock market advisor, they will guide you through the anomalies that every investor should know. So, knowing some of the top anomalies will be beneficial for investors. Here I have listed below the top 5 stock market anomalies every investor should know: 

Fallen Angel Bonds: Bonds that were first issued as investment grade (i.e., thought to be relatively low risk) but have since been reduced to junk bond classification are known as "fallen angel bonds" (i.e., considered to be high risk). 

The January Effect: In reality, this abnormality is extremely frequent. It implies that January often sees an increase in stock values. There are numerous elements at work that could lead to this.

Low Beta Anomaly: This one goes against a fundamental investment tenet that increased risk produces greater rewards.

Small-Firm Effect or SFE: This idea contends that small-cap companies have greater prospects for growth than larger enterprises, as the name implies.

Price Reverse Anomaly: Price reversal is a phenomenon that, to put it simply, indicates that equities that have performed well or poorly over the course of a year alter their direction. In other words, they start to perform poorly after a year or vice versa.