Thanks for your wise caution. Here’s what I do:

Starting position was 50% FBTC, 50% MSTR, all in tax-advantaged accounts.

When MSTR pumps 1-5% ahead of more, I'm quickly rebalancing into FBTC back to 50/50. I never sell the FBTC. If MSTR reverts to mean, I'll HODL and wait until it becomes my race horse again in the future.

And by future, I mean decades.