Actually, in the past couple of days, mainstream coins haven't been heavily invested in because the altcoins are quite volatile, making it more suitable to take small risks for large rewards. So, as long as you catch one coin that surges, you can make a significant profit. Mainstream coins are performing well, but their gains are relatively limited, unless the positions are quite large. However, ETH has already broken through an important level, and I will also keep an eye on mainstream coins, as there are good cost-performance ratios that can be launched at any time!