What?, let's correct your opinion, I saw when bitcoin price rising, most of altcoin down. when bitcoin price down, over percent altcoin price most likely down by btc. It's bad for altcoin when bitcoin price still unstable.
now maybe bitcoin is more stable. price movements are not like yesterday, up and down with a large volume. altcoin has the opportunity to follow the growth of bitcoin now, slowly, but we still see a rising trend in the market.