This is how Big Whales manipulate Crypto market :
Altcoins Pump: There is nothing to do with BTC or ETH. They simply dump Bitcoin Dominance and alts go up.
When they want to Short Squeeze : They pump BTC by just 2 - 3% and at the same time BTC.D dumps 2-3%, they slts go 20 - 30% up.
Altcoins Dump: They dump BTC 5-6% and they pump BTC.D by 4 - 5% and alts dump 30 - 40% in less than a day.