Altcoins are similar to Bitcoins in the sense that they are both relatively volatile right now when it comes to their value. The more one invests into altcoin, the greater chance that person has at gaining a profit.
The digital market is a changing one and yes bitcoin and altcoins prices are volatile in nature but there is a huge difference between the prices of all the crypt coins and the rate at which the price changes. Bitcoin is the number one crpto coin in giving profits while ethereum stands first position in altcoins. For earning huge profit, bitcoin is the best but some altcoins have good potential too like wth, monero, waves, neo, ltc.