Since most of the major altcoins move up or down at the same time as bitcoin, aren't they all controlled? How does it work?
Yes, if we monitor market movements, almost all altcoins follow the bitcoin chart. But we also have to monitor the charts of coins that have died on the exchange. If the chart also turns green but there is no change in orders, it means that the chart is only affected by Bitcoin, because there are orders for these coins in the form of BTC.