---
title: "Volatility risk premium screener: answers \"are this name's options rich or cheap"
method: GET
path: "/v1/iv-hv-premium"
---

# Volatility risk premium screener: answers "are this name's options rich or cheap

`GET /v1/iv-hv-premium`

## Request

- Base URL: `https://api.alphanume.com`
- URL: `https://api.alphanume.com/v1/iv-hv-premium`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Volatility risk premium screener: answers "are this name's options rich or cheap
right now?" For every liquid US optionable equity, per trading day: ~30-day
at-the-money implied volatility (iv) vs ~30-day realized volatility (hv), their
spread (iv-hv) and ratio (iv/hv), plus daily cross-sectional percentile ranks and
z-scores for each measure, option notional volume, and the ATM strike/expiry/spot
used. Rows update intraday (is_final=0) and settle after the close (is_final=1).

Use it to find overpriced premium to sell (high iv_hv_ratio / min_ratio_rank near 1),
underpriced options to buy, or to track one ticker's premium history via `ticker`.

Requires an Alphanume Pro API key. A 403 PRO_SUBSCRIPTION_REQUIRED or
DATE_RANGE_RESTRICTED error means the key's plan does not cover the request --
it does not mean the data is missing.

## Query parameters

- `ticker` string
- `date` string
- `date_gte` string
- `date_lte` string
- `date_gt` string
- `date_lt` string
- `min_iv_hv_ratio` number
- `max_iv_hv_ratio` number
- `min_ratio_rank` number
- `only_final` boolean

## Response `200`

Matching rows.

- Envelope
  - `count` integer, required
  - `data` object[], required

## Other responses

- `400`: Invalid or conflicting query parameters.
- `401`: Missing or unrecognized API key.
- `403`: PRO_SUBSCRIPTION_REQUIRED: the key's plan does not include API access; every endpoint requires an active Pro subscription. DATE_RANGE_RESTRICTED: a legacy free-tier key asked for dates outside its window. In both cases the data is not missing.
- `429`: Rate limit exceeded (600/min); the body carries retry_after_seconds.

---

[API](https://skmtc.dev/alphanume/apis/alphanume-api.md) · [All operations](https://skmtc.dev/alphanume/apis/alphanume-api/llms.txt) · [OpenAPI document](https://skmtc.dev/alphanume/apis/alphanume-api/revisions/2cb83f10bba4?raw)