Which publicly traded companies are actually holding Bitcoin instead of just boasting and speculating on stock prices? This page is enough.

The largest holder remains MicroStrategy, with more than double the total of others combined. Most are still mining companies, with very few emerging ones.

Of course, there are many huge holding institutions that are not publicly listed, such as Bullish with hundreds of thousands, Bitmain, Li Lin's family office, etc., which can all rank at the top of this list.

https://www.coingecko.com/en/public-companies-bitcoin