Let me guess, the coins that do that must be a shitcoin, they are the forgotten coins that could just resurrect from now where through some artificial pumping when other major coins/tokens have had their initial rise due to the pump. It's often interesting to see some of them pumped x2, x4, x5 and so on in this regard. I saw many of them that were sluggish in movement when the bull run happened in the past 4 months.
When altcoin season comes, many shit coins will be used for pump and dump games. If you join early before their pump games, and you can hold those shit coins, you get profit. If you ignored them months ago and now only consider to join because they rose a lot and stimulate your greediness, you might end with big loss.
After pumps, there will be dumps because they are two parts of pump and dump games.
But suddenly in December, they started moving dangerously upwards. It could only mean that people abandoned them and focused on the major initially and when they were done with the major, they started looking elsewhere to pump until they got to their turn. They often pump the low-value coins/tokens at that time and that explains why some of them could suddenly move over x10 in just a few days.
They fell in last three years since 2021 to 2023 and when they started their rallies, you should never touch those shit coins and short them. Your margin position will be very easily liquidated if you open a position that is opposite with the market trend, that is upwards now. Don't short because you can not know how high they will rise to before stop and start corrections.
If you miss their pumps, stay patient, observe it and the market, don't short.