Search yourself
Pick metrics and conditions yourself, including custom formulas. Free, no registration.
Your stock-picking,
handed straight to AI.
Katana narrows companies with its own metrics, and AI reads annual reports to judge qualitative conditions. For complex theses and company profiles, the selection you used to do one company at a time, AI now runs across the Japanese market.
01 / Search
Search yourself, with AI, or from your own AI.
Search with AI
Describe the companies you want. Katana builds quantitative and qualitative conditions and searches the whole Japanese market. An account and an AI budget are required.
Use Katana from your AI (MCP)
Connect Katana to Claude, ChatGPT, or another AI assistant, and go from picking stocks to analysis in conversation. The feature we recommend most.
Learn more about Katana.
Open the screener Fully in English. Best with MCP.Katana's site and MCP are fully in English. Connecting Katana to your AI through MCP is the best way to use it, and your AI handles the Japanese annual reports, so the language barrier disappears. We recommend it.
Katana MCP: connect Katana to your AI
About Katana: how it differs
Why I Built Katana
Use Katana for free
Example: Companies quietly in semiconductors.
Example: Companies like Nintendo, across all of Japan.
Example: Companies like UNIQLO, across all of Japan.
Example: Recurring revenue, across Japan.
Example: Cheap, growing physical-AI stocks, across all of Japan.
Example: Companies that grow with cyberattacks, across all of Japan.
Example: Companies like Keyence, across all of Japan.
Example: Companies built like Rorze, across all of Japan.
Example: Shipping stocks that profit from the tanker spike.
Example: Hidden defense stocks, across all of Japan.
Example: Data center liquid cooling stocks, across all of Japan.
Example: Optical communication stocks, across all of Japan.
Example: Power grid and transformer stocks, across all of Japan.
Example: Nuclear fusion stocks, across all of Japan.
Example: Stocks that benefit from rising rates, beyond the banks.
Example: Data center construction stocks, across all of Japan.
Example: Stocks with pricing power, across all of Japan.
Example: Shipbuilding stocks, across all of Japan.
Example: Nuclear power stocks, across all of Japan.
Example: Land-based aquaculture stocks, across all of Japan.
Example: Undervalued national resilience stocks, across all of Japan.
Example: Stocks putting self-driving to work, across all of Japan.
Example: Stocks set to grow with perovskite solar mass production.
Example: Stocks winning orders from satellite mass production, across all of Japan.
Example: Recession-resistant stocks with progressive dividends, across all of Japan.
Example: Stocks already booking sales from quantum computers.
Example: Energy-saving stocks whose demand rises with oil prices.
Example: Rapidus-related stocks, across all of Japan.
Example: Stocks with sales lifted by rare-earth curbs, across all of Japan.
Example: Japan's HALO stocks, found across the whole market.
Example: Stocks earning from PFAS countermeasures, across all of Japan.
Screen presets, with sources
Researching Japanese stocks from overseas
How to buy Japanese stocks from overseas