Japan's small caps, checked every single night. For 18 years.

62% of listed Japanese companies have zero analyst coverage. We cover all of them — with a point-in-time verified system that checks every listed Japanese equity, every night, and has 18 years of verified data behind it.

What you'll get here

• Weekly Observatory Report — every Saturday. New watchlist entries, warning signals, and sector flows across the entire market.
• Scorecard, first — every issue opens with how our previous observations actually did. Wins and losses, benchmarked and timestamped. No cherry-picking, structurally.
• Build Log — the story of how one engineer and an AI agent built this system, published as a weekly series.

Paid memberships are now open via Patreon — founding rate $25/month, locked for as long as you stay (standard $45/month later). Become a Founding Member → Or join free on this site.

Tsukiyo Research provides data and analysis for informational purposes only. Nothing here is investment advice. See our Terms.