How to find 'quality altcoins'?

Perhaps we can participate in buying such altcoins by looking at the holdings of the Grayscale fund.

Apart from Bitcoin, there is no doubt that ETH is the largest cryptocurrency in Grayscale's holdings.

We can also view the trading situation of various ETFs through the ETH ETF.

Other cryptocurrencies, such as the recently skyrocketed mainstream coins like ETC/LTC/BCH/XLM, are also included.

Additionally, there are altcoins like LINK/MANA that have shown strong upward trends recently.

We can capture the holdings of large investors/institutions in certain altcoins by factors such as premiums/changes in holdings over XX days.

At least, the altcoins that can be included in Grayscale funds have relatively decent fundamentals compared to most other altcoins.

Finally, we can use technical analysis tools to select better altcoins for investment, filtering out our own medium to long-term altcoin portfolio.