Beginning of this year I see BTC and altcoins markets are higher valued. But Since Feb of this year thats markets are falling down. Its still not yet stable and i see lot of Panic seller in this period. I want to know whats the reason for it. Please give any idea

Some say that due to the fact that hackers hacked several more exchanges, thus crashing the market. But in reality there are only percentages of 20, the rest is simply dependent on people who are now constantly selling their assets.