Traditional screeners
Only filter candidates by the metrics they provide.
Your stock-picking,
handed straight to AI.
Complex theses, your own selection rules. Katana narrows companies with its own metrics, and AI reads annual reports to judge qualitative conditions. The selection you used to do one company at a time, AI now runs across the Japanese market.
01 / Compare
How Katana differs
Asking generative AI
It does not actually screen every listed company against your intent.
Existing AI screeners
Held back by computing cost, they could not run qualitative screens across the whole market.
In the end, even after narrowing, it was one company at a time.
You had to read company information and check whether each one fit your approach.
Nor could you search all Japanese stocks for a free-form condition like “companies quietly running a semiconductor business.”
With Katana, from narrowing to judging, end to end.
Katana
From about 3,800 listed companies,finds the stocks
you are looking for.
02 / Usage
Describe the companies you want, in your own words.
Katana turns your description into screening conditions and applies them to the whole Japanese market: quantitatively with its own metrics, qualitatively with AI.
Katana offers 1,000+ metrics, and you can build your own with formulas, for free. That is why the companies you picture translate straight into formulas, and ~3,800 companies narrow down precisely.
~3,800listed companies covered
70M+characters of annual-report text
AI judges, company by company, whether each one matches what you described.
You can also start from a stock you own or watch,
and find companies with similar traits.
Katana keeps sharpening.
Katana lets you search every listed company in Japan with your own hypothesis, not only by financial numbers but by the business described in annual securities reports. AI technology, advancing every day, made this possible. We will keep bringing new technology into Katana and keep sharpening it.
Why I Built KatanaThe background and thinking behind Katana Screener. Open the screener