FundSpec fair value
A model based fair value with a calibrated range and a conviction tier for every priced US company.
- Cadence
- Daily after the close
- Coverage
- USD filers with priced fundamentals, about 7,000
- History
- Daily history for the trailing year
- Availability
- Live
What you get
- A single fair value per company from FundSpec's valuation model, plus a range calibrated to contain the realised price about eighty percent of the time.
- Comparable companies are chosen by the model from business characteristics rather than by label, and are returned with their weights.
What makes it reliable
- The model learns from history as it was known at the time, so its estimates are not flattered by hindsight.
- Ranges and conviction tiers are calibrated against realised outcomes by company size.
curl -H "Authorization: Bearer fsd_live_your_key" \
https://fundspecdata.io/v3/v3/fair-value/AAPL{
"ticker": "AAPL",
"date": "2026-09-03",
"price": 328.21,
"fair_value": 145.4,
"range": {
"low": 98.2,
"high": 212.7,
"coverage": 0.8
},
"tier": "overvalued",
"gap": -0.557
}Field dictionary
Key fields. The complete list with types is in the API reference, generated from the same definitions that validate every response.
| Field | Type | Description |
|---|---|---|
| fair_value | number | Model fair value per share. |
| range.low | number | Lower bound of the calibrated range. |
| range.high | number | Upper bound of the calibrated range. |
| range.coverage | number | Share of realised prices the range is calibrated to contain. |
| gap | number | Fair value relative to price, as a decimal. |
| tier | string | strongly_undervalued, undervalued, fair, overvalued or strongly_overvalued. |
| comparables | array | Peer tickers with model weights. |