If you consider holding altcoins in the long-term, or want to build a long-term portfolio, we recommend you to look into coins that have been trending for the past few months and getting support from the community. Such assets have a lower risk of devaluation compared with those less supported by the community.
Watch the price chart and learn to analyze it, understand when and why drawdowns and consolidations happen. It is during these times that whales are most likely to accumulate coins, and it is a good idea to join them. When the time comes and the market sentiment flips due to some positive news about the project, the price will respond in an upwards direction, giving you an opportunity to book a nice profit for yourself!