“…As such, in addition to the existing literature on momentum, contrarian strategies, and the January effect [44,59,85], relevant research has indicated that stock market overreaction could explain contrarian profits [86], as well as the relationship between sentiment and technical indicator performance [87]. However, we found that there is a gap in the literature regarding the impact of trading signals triggered by contrarian regulations of SOIs and the RSI in a particular month on subsequent performance ("monthly effects"), which differs significantly from the better monthly performance in a particular month (e.g., the January effect that has been extensively investigated in the relevant literature [2,3,69,71,74]. As a result, we argue that this research addresses the gap and aims to contribute to the existing literature by examining whether investors who employed trading signals emitted contrarian SOI and RSI trading rules in a particular month instead of other months would have better subsequent investment performance, given that the concept of investment is to invest now and derive investment performance in the future.…”