Subject: Re: how many accounts do people here use to hold their
This doesn't specifically answer your question, but thought his video does a very good job of addressing the bigger question of:

"What Happens to Our Investments if Schwab, Fidelity or Vanguard Collapse?"
https://www.youtube.com/watch?...

He also happens to be a Berkshire Hathaway shareholder. Bonus video he did on:

"7 Powerful Lessons From Warren Buffett's 2023 Berkshire Hathaway Letter."
https://www.youtube.com/watch?...

I know the mental junk filter tends to engage when someone posts randoms videos, but I hope some will agree these have a high signal to noise ratio.