Companies
33 covered
→ Pegasus Three SixtyValuation Evidence PackData qualityIllustrative / backtest
A data product buyers can
inspect before they trust it
Everything a buyer checks before procurement — coverage, sample access, provenance, delivery, and measured accuracy — on one page, with the misses left in.
DATA: FIXTURE | BACKTEST
01 / Buyer checklist
Marketplace readiness
The practical questions a data marketplace or procurement team will ask first.
| Area | Current evidence | Buyer question |
|---|---|---|
| Coverage | 33 companies, 54 current-mark source references, median 1 sources per current mark. | Can I see exactly what the dataset covers before I buy? |
| Freshness | Every payload carries dataset_version 2026-06-14 and as_of 2026-06-10. Current release is illustrative / backtest, not live marks. | Can downstream systems know whether a value is current, historical, or backtest? |
| Provenance | Company pages expose source names, source URLs, event types, source quality, and included/excluded markers. | Can an analyst replay why a number exists? |
| Validation | 6 IPO validation rows across 2 scorecard periods; 9 published misses remain visible. | Does the vendor publish mistakes, sample sizes, and reliability metrics? |
| Delivery | HTTPS JSON API, copy-paste docs, stable error codes, rate-limit headers, and an Enterprise signed-resolution endpoint. | Can engineering evaluate the product without a sales call? |
| Controls | Supabase-gated entitlement, server-only Stripe webhook reconciliation, API key auth, append-only mark events, and no query-string API keys. | Is access controlled and audit-friendly? |
02 / Listing card
Data marketplace listing card
Concise fields that can be reused for marketplace intake, analyst review, and buyer comparison.
| Field | Answer |
|---|---|
| Product category | Private company valuation data API |
| Primary users | Fund CFOs, valuation committees, auditors, portfolio monitoring teams |
| Delivery method | HTTPS JSON API; signed resolution records on Enterprise |
| Sample access | Public company pages, API docs, Research tier checkout |
| Coverage geography | US-focused late-stage private companies in the current sample |
| Refresh statement | Dataset version and as_of date on every response; live marks are not published in this release |
| Redistribution | Restricted below Enterprise; Enterprise license supports redistribution terms |
| Compliance boundary | Information-only data product; no custody, brokerage, trading, or investment advice |
03 / Quality workflow
From public event to buyer-ready value
Capture
Store a public source event with URL, timestamp, source name, and immutable lineage.
Normalize
Convert the source into a typed observation with quality score, inclusion flag, and normalized valuation fields.
Calibrate
Generate marks and intervals from versioned methodology and reproducible dataset inputs.
Validate
Replay frozen marks against realized IPO outcomes and publish reliability, Brier, coverage, and misses.
Deliver
Serve read-only JSON with meta fields for data_mode, provenance, methodology_version, dataset_version, and disclaimer.
04 / Controls
What keeps the product honest
Coverage is visible
The public coverage page lists the current universe, mark status, intervals, source counts, and staleness signals. Buyers can inspect the sample before subscribing.
Quality is measured
Scorecards include observed interval coverage, Brier score, sample sizes, validation outcomes, and known misses. The page does not hide unfavorable cases.
Payloads are self-describing
API responses carry meta.data_mode, meta.provenance, meta.methodology_version, and meta.dataset_version so clients can enforce their own usage gates.
Boundaries are explicit
Spearhead is a non-custodial valuation data product. It does not offer trading, brokerage, custody, wallets, token issuance, or personalized investment advice.
95% interval note: latest observed coverage is 95.7% with n=47. Limited samples are labeled in payloads and UI where applicable.
Illustrative / backtest - not live marks. Indicative valuations, not transactable prices. Underlying assets are illiquid; inputs are limited to publicly reported events with source attribution. Pegasus Three Sixty and SpearHead are an information-only valuation product, do not hold client balances, and do not provide investment recommendations.