Let's popularize a lesser-known track:
Many beginners do not understand why, after BTC rises, other altcoins will fall. There are many who do not understand what it means for Bitcoin to 'suck the blood' from other coins! Please read the following content:
BTC is the leader in the crypto world, so there are many trading pairs like BTC/ETH, BTC/ADA, DOGE/BTC, TON/BTC, SOL/BTC, PEPE/BTC, BNB/BTC, etc. with various altcoins.
Careful observers will notice that recently, USDT has been issued in large quantities, but when Bitcoin broke new highs, the trading volume of Bitcoin's USDT was not very high. This means it has been rising without volume. But where does the buying pressure come from? It appears in these BTC/altcoin trading pairs!!!
Normally, buying coins is done by trading with USDT. Recently, many market makers and institutions have adopted a model where they use altcoins/BTC, effectively exchanging altcoins directly for Bitcoin. So for altcoins, this means selling, which creates selling pressure. This is also why as soon as BTC rises, altcoins tend to fall; the selling pressure faced by altcoins comes from here. Once BTC goes up, they will exchange BTC/altcoins back again!!
After such back-and-forth operations, the amount of USDT held by market makers and institutions will increase. During this process, they will also add some leverage to expand the return on their capital!