When bitcoin price increasess, altcoin decreases. When bitcoin price decreases, altcoin decreases as well. In both case, altcoin suffers. When does altcoin price increases? Why market follow this behavior? Please share constructive reason behind this.
Altcoins are being pumped usually when bitcoin growth slows down and the cash invested in BTC is being transferred to different lesser coins via exchanges. If BTC grows or falls dramatically, people don't think about altcoins, they are too focused on BTC/USD pairs.