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Evidence-bound summary — expand sections for movement, risks, and signals.
Memo snapshot · May 20, 2026, 5:42 PM
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TL;DR
Seed (YC)Chestnut Forty Minimal official site: AI models for forecasting global macro events.
Raised $500K across 1 funding round. Latest: $500K Pre-seed (Jun 2025). Investors: Y Combinator. (High).
Funding
Raised $500K across 1 funding round. Latest: $500K Pre-seed (Jun 2025). Investors: Y Combinator. (High).
Product / news
Limited product/news coverage in corpus (Low).
Verified facts
YC job listing states Chestnut Forty founded 2025, YC Summer 2025 batch, building AI macro forecasting.
Weak funding evidence: mention does not include a parsed raise amount/round and may refer to non-funding context.
No open roles indexed yet.
The index price and activity score are algorithmic estimates based on observed public company-level signals. They may be incomplete, stale, or inaccurate and are not investment, legal, tax, or business advice.
Source types found
Strongest / recent news-style rows
Wed, May 20, 05:42 PM · confidence 88%high quality
wikipedia · Mon, Jun 29, 08:53 AM · confidence 50%medium quality
wikipedia · Mon, Jun 29, 08:53 AM · confidence 50%medium quality
Newest first · 5 event(s)
Source: official_site
Chestnut Forty builds ai models for forecasting global macro events. careers@chestnutforty.com .
YC job listing states Chestnut Forty founded 2025, YC Summer 2025 batch, building AI macro forecasting.
Minimal official site: AI models for forecasting global macro events.
2 row(s)
The company's own site — the authoritative description of what they sell and to whom. Marketing-controlled, so treat claims as positioning rather than verified traction.
Chestnut Forty builds ai models for forecasting global macro events. careers@chestnutforty.com .
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗Minimal official site: AI models for forecasting global macro events.
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗2 row(s)
Third-party press coverage. Independent reporting corroborates company claims; repeated coverage across outlets is a momentum signal.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗1 row(s)
Funding announcements and investor-database records. The strongest public signal of capitalization: round, amount, and syndicate quality when disclosed.
YC job listing states Chestnut Forty founded 2025, YC Summer 2025 batch, building AI macro forecasting.
Why it matters: Funding signal — Pre-Seed per this source; verify against the linked original before relying on it.
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