Technical Sell Signs
For most stocks, the number of consecutive down days in price relative to up days in price will probably increase when the stock starts down from its top
When some stocks are 70% to 100% or more above their 200-day moving average price line, you should sold.
Some stocks will make new highs on lower or poor volume. As the stocks goes higher, volume trends lower, suggesting that big investor have lost their appetite for the stock.
You may sell if a decline from the peak exceed 12% or 15%.
Consider selling if a stocks has a long advance, then closes below it's 10-week moving average and lives below that average for at least 8 consecutive weeks.
If you don't sell early, you'll be late. Your object is to make and take significant gains and not get excited, optimistic, greedy, or emotionally carried away as your stock's advance gets stronger.
Keep in mind the old saying :" Bulls make money and bears make money, but pigs get slaughtered."