Here are some of the rules, based on extensive back-testing done on ~100 years of stock market history, which you can follow to guide yourself in such scenarios:
1. After making 20–25% from a correct buy point (proper breakout from pivot level), most stocks retreat. It is a good time to book your profit, given it took time to reach that level (more than three weeks) and/or the base it rallied from was second-stage or later base. Stocks breaking out from third and higher stage bases have strong chances of failures.
2. If a stock gives you returns of 20% or more in less than three weeks after the breakout, it shows rare strength and eight-week hold rule triggers. Under this, you hold the stock at least for eight weeks. Such stocks usually end up giving multi-fold returns.
3. If a stock moves in your favor in erratic manner; for example, a stock shows unexplained intra-day volatility, moves down but ends higher giving you the gains, it is a negative signal. Such stock is likely to move against you and should be sold.
4. If recently you’ve taken 7–8% loss in one of your positions, it is prudent to take your profits at 20–25% levels, or at least trail your profits from that level. However, if you’ve taken several 7–8% losses, and none of your recent picks have hit the level of 20–25% breakout from pivot level, you need to change your strategy. You may consider booking earlier than 20–25% to cover up losses in your capital. But more importantly, you should re-examine your stock selections, and characteristics of your breakouts/buy signals. You must also re-examine the overall market direction, and try to steer clear if the market is not in a Confirmed Uptrend.
Related article: https://marketsmithindia.com/post/how-to-accumulate-long-term-profit-in-stocks
https://marketsmithindia.com/post/canslim-parameters-fundamental-analysis-technical-analysis
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