Put Larry Fink's rule through your numbers

One rule JMM has located in a dated source, rebuilt as a working calculator, and taken a position on.

Sources located: BlackRock
Source years: 2025
JMM verdicts: contested

Portrait: Kena Betancur / European Commission, CC BY 4.0, via Wikimedia Commons. Self-hosted by JMM.

Infrastructure allocation model

What does an infrastructure sleeve do over ten years?

contested Read who is making the argument. BlackRock bought a private-markets business and then proposed a portfolio with more private markets in it. BlackRock, 2025Open model

Not every rule here survives its own arithmetic

JMM does not grade this rule as a set. The verdict on infrastructure allocation model is where the position turns critical: Read who is making the argument. BlackRock bought a private-markets business and then proposed a portfolio with more private markets in it.

Each page separates three things people usually run together: what the source states, what JMM's model adds to make it computable, and where the rule itself breaks. The last one is not the calculator's limitations list. It is the failure of the idea, which is the part the person who published the rule has no reason to write down.