In this article, we will look at the features of altcoin trading during their pumping. In our opinion, the most interesting pumping occurred in the period from September to December 2022 with MASK and LEVER coins. Fig.1. MASK pumping – 480% in 9 days! In general, pumping is a business project consisting in a long–term recruitment of a huge position during a strong subsidence of coins at the bottom and further sale of the positions gained after performing sharp price outliers and involving a huge number of participants-traders in the process. Sales are carried out in batches at the tops …