Bitcoin, Ethereum, Litecoin, Dash and Monero have recently (past few days) achieved ATHs. Of the top 10 (Market Cap) alt coin offerings Bitcoin Cash, Ripple, Bitcoin Gold, NEO and IOTA are all poised to achieve an ATH. Take a look at their charts (vs USD) and you'll see that most are one push away from ATHs. The question is are investors cycling through cryptocurriencies, achieving ATHs in each, locking in their gains and moving to the others? Something to consider perhaps.