How to find "high-quality altcoins"?

Perhaps we can participate in buying such altcoins from the holdings of Grayscale.

Aside from Bitcoin, it is undoubtedly ETH that is the largest cryptocurrency in Grayscale's holdings.

We can also take a look at the buying and selling situation of various ETFs through the ETH ETF.

Others, such as the recently surging old mainstream coins 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 players/institutions in certain altcoins through factors like premium/XX days of holding changes.

At least, altcoins that can enter the Grayscale fund 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 holdings.