The same way as you i see several altcoins mooving aroun 20% to 50% daily at poloniex, and this may be one of the best things about altcoins,the easy and fast money,with your investment.Savings are being done just by the olders persons ,that still trust in their banks,i doubt we bitcoin holders would keep our savings instead try to risk them at bitcoin.
nice i make arround 2btc at this month with altcoin trading, this is my biggest profit, some altcoin give huge gain with good news like azure etc.