I wold supposed to mean that you're asking what are the new Altcoins that are rapidly increasing their values in a minimum of time like 2 weeks or less.
I would suggest to study those newly listed altcoins in coinmarketcap.com
https://coinmarketcap.com/new/
And those Altcoins who performed well as top gainers and loosers
https://coinmarketcap.com/gainers-losers/

You'll find a very good altcoins and look at their price value graphs and other information as well.
Most investors and traders find these links very useful.