A typical large-cap-equity PM desk in 2026 runs a stack like this. None of these are Arithmos — and Arithmos doesn't try to be any of them.
| Job to be done | Most-used tool |
|---|---|
| Real-time market data + chat | Bloomberg Terminal |
| Fundamentals, modelling, attribution | FactSet |
| Risk modelling and factor decomposition | MSCI BarraOne, Axioma (Qontigo) |
| Earnings-call and document search | AlphaSense, Sentieo (Visible Alpha) |
| Charts and technicals | TradingView, Bloomberg charts |
| Order management | Charles River, Bloomberg AIM, BlackRock Aladdin |
| ESG screens | MSCI ESG, Sustainalytics, ISS |
Where Arithmos fits
Arithmos is a research tool for the prototyping stage — "what would it look like if we built an index that does X?" It's complementary to FactSet, BarraOne and the rest. PMs typically use it the way a design team uses Figma: a fast, opinionated way to mock up an idea before formalising it in the real production stack.
FAQ
Can Arithmos integrate with FactSet or Bloomberg?
We export holdings as CSV and JSON. Both FactSet's PA platform and Bloomberg PORT accept CSV-imported portfolios for analysis. A native API integration is on the roadmap.
Is Arithmos suitable for institutional PMs?
It's not a Bloomberg replacement. For a PM, the value is the prompt-to-prototype workflow — generating dozens of candidate baskets in an afternoon for committee review. The production-grade work still happens in BarraOne / FactSet PA.
