Turn any investing idea into a ready-made portfolio
Type what you want to invest in. Arithmos picks the companies, decides how much of each, and shows how that mix would have performed. You see the reason for every pick.
Stocks only. Covers the US and 22 other markets including the UK, India and Japan.
- Free to explore
- See every company and why it's there
- Works with your existing broker
Arithmos is a research tool. It never holds your money or places trades, and nothing here is personal advice.
How it works
From an idea to a ready-made list of companies in about a minute.
- 1
Describe it
Type what you want to invest in, the way you'd explain it to a friend. “Companies making AI chips”, “UK firms that pay reliable dividends”.
- 2
We build and test it
Our AI picks the companies, decides how much of each to hold, and shows how the mix would have done against the S&P 500.
- 3
Invest your way
Save it, share it, or copy it into your own broker. You stay in control: Arithmos never trades for you.
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“How do I invest in…?”
Short, plain-English answers, plus a free starter course if you are new to all of it.
How to invest in AI
The companies behind artificial intelligence, the three ways to invest in them, and the risks to understand first.
Read the guideHow to invest in semiconductors
How the computer-chip industry is organised, the routes for investing in it, and why it moves in cycles.
Read the guideHow to invest in dividend stocks
How dividends work, what yield really tells you, and how to avoid the common traps when investing for income.
Read the guide
