Calibrated. Source-traceable. Audit-grade.

Institutional-grade private market research at the speed of public markets.

IC-quality memos and a continuously-updated ranking of US private AI companies (Seed through Series D) — built for family offices, multi-family offices, RIAs, fund-of-funds, and PE professionals.

Request AccessView the public top 10

For accredited investors and institutional allocators only. TrancheBook is a financial publisher, not a broker-dealer.

Two products

IC Memo Pipeline
Submit a target company. Receive a complete IC package — memo, live xlsx model, exec summary, management Q&A, deck, one-pager — with audit-grade provenance on every claim and a rubric grade shipped alongside the memo.
  • • Kill-gate verified — we reject deals that don't fit
  • • One canonical FinancialScenario across all six deliverables
  • • Adversarial self-critic + rubric grade shipped with each memo
See live example
AI Company Ranking
A continuously-updated ranking of ~3,000 US private AI companies (Seed through Series D), scored on six structural criteria plus a momentum overlay drawn from GitHub, HuggingFace, benchmark performance, and ATS hiring signals.
  • • Six structural criteria + momentum overlay capped at 2.0×
  • • 90-day rolling state with 60-day exponential decay
  • • Public top-10, email-gated full table, per-company profiles
See live example

The trust infrastructure

The advantage isn't that we use AI — every competitor will. It's the verification stack around the AI: deterministic kill gates, a public calibration record, and audit-grade source provenance on every claim.

We reject deals that don't fit

Every memo passes deterministic kill gates before it ships. An LBO request on a $300B GSIB will be turned down — and the reasoning logged.

Memos carry a public accuracy track record

Every prediction is resolved against eventual reality and published as a calibration retrospective on the blog. We are willing to be wrong in public — that's what makes the track record real.

Every claim links to its source

EDGAR filings, S-1s, named news sources, GDELT entries — every assertion in a memo is hyperlinked to its origin. No black-box reasoning, no synthesis without a citation.

Two products, two prices

Buy one, buy both. Most allocators buy both because the ranking surfaces deal flow they then want diligence on.

IC Memo Pipeline
Tier-priced per memo, with overage pricing on Research Tier subscriptions. Enterprise pricing available.
  • • Six deliverables per memo
  • • Live xlsx model with formula validation
  • • Rubric-graded before delivery
AI Company Ranking
Flat monthly subscription with a free trial. Email-gated free tier for the full table; paid tier unlocks priority routing, alerts, and API access.
  • • ~3,000 companies, refreshed daily
  • • Filters, watchlists, rank-delta alerts
  • • Free trial available
See full pricing

Stay informed

Get monthly ranking commentary, calibration retrospectives, and research notes — straight to your inbox.

Financial publisher status

TrancheBook is a financial publisher and research platform — not a broker-dealer. Indications of interest submitted on the platform are routed to our registered broker-dealer partner, Rainmaker Securities, on a flat-fee basis. The ranking engine is architecturally walled off from broker fee economics. Please review our risk disclosures before proceeding.