Heh, greetings.
Looking at top100 coins on coinmarketcap and figure out a lot of incredible swings for now reason (for me as a newbie).
What do you thing, how much of them is simply pumped?
How much of such swings can be predicted based on open information?
Is it any reason to focus on alts with their 20-30-40% growth over 24h?
I think you better monitor those altcoins that have shown some serious spikes. You can easily track them by looking at the charts for the past several weeks or few months. You will notice that there are some big pumps that happened every now and then that will be followed by another big dump. These kinds of pump and dump coins are good profit-giving. You just have to be careful when to enter and exit.