Can I ask how major currencies tend to rise and fall together? For example, if I buy currency #BTC which is rising and buy currency #ETH which is falling, I will have one winning trade and one losing trade. How can I make the profit and loss equal? For example, if I put 20 USD into each trade, how much leverage should I use so that the profit and loss are equal, given that one currency has a value of up to 8x k USD and the other is only about 1k USD? I do not know, so I hope everyone can guide me.