Bitcoin, Ether, Ripple, NEM, ETC, Litecoin, and Dash are pretty flat today but there were some major moves by a lot of other altcoins today.
A few of the more prominent movers include:
XtraBYtes 75.43%
Qtum 64.70%
SuperNET 62.71%
Stratis 61.67%
Komodo 55.54%
Verge 51.81%
Bytecoin50.64%
BitcoinDark 49.59%
DigiByte 48.98%
https://coinmarketcap.com/gainers-losers/
There are quite a few other 30%+ gainers in the CoinMarketCap.com top 100. It's hard to say what is precipitating these big moves but there is no doubt people are looking for the huge 100%+ gains in short time frames that may not be likely with the top market cap coins anymore.