Considering the greater and greater values of BRK holders’ accounts, I was wondering if folks keep all their holdings with one broker or if you diversify with several?
Looong ago, my boss’s wife was a registered representative at a stock brokerage place, so I had an account there. Later, she left the business and I dealt with her replacement. At some point, that brokerage had problems, and it took many many months to get my stock certificates out of there.
Meanwhile, I had part of my salary put into a company savings plan, like a 401(k), but that was before there were 401(k)s. When I retired, the company did not want to run it anymore, and transferred my account to Fidelity as a regular IRA. This was about the time brokerages started operating on-line and charging somewhat lower commissions. Around that time, I got another job for the fun of it, and I discovered The Motley Fool. I was soon interested in the Foolish Four, Unemotional Value and Unemotional Growth that required frequent (monthly sometimes) trading, so I switched from Fidelity to Karl Aufhauser that, for a fixed annual fee, permitted 20 Free trades a month with no commission at all. Since Fidelity would not lower their commissions (they did a couple of years later, but I no longer cared). I moved my Fidelity account to Aufhauser. Soon after, Ameritrade bought Aufhauser, so I mainly traded with Ameritrade since then.
At some point, my post-retirement job started paying part of our salary into a SEP-IRA (I think that is what it was) at Charles Schwab. Well, Schwab had an annual fee if your investments were under $25,000 or $50,000 (I forget which), so I topped up to that. A year or so later, Schwab started charging me a fee, and when I complained, they said I had to have a minimum of $50,000 or $100,000 for a no-fee account, so I closed the account and moved it all Ameritrade.
As far as using multiple brokerages to diversify my risks, I do not do that, but I did take delivery of my BRK.A certificates (one share for each certificate) and keep them in the safe deposit box at my bank. So if the DTCC and Cede&Co screw up, I will still have those.