How much BTC should be in your portfolio?

Six of the world's largest banks and asset managers largely agree on one thing:
Bitcoin allocation should not exceed approximately 5% of a portfolio.
The idea is to consider it as an asymmetric bet: large enough to benefit from a significant potential increase, but limited enough to prevent a sharp correction from heavily impacting all assets.
A cautious approach that reflects the dominant perception among asset managers, who see BTC more as an optional performance driver than as a core allocation pillar.