---
title: "Relative-volume bars for a ticker"
method: GET
path: "/v1/underlying/{ticker}/rvol"
tags: ["Underlying"]
---

# Relative-volume bars for a ticker

`GET /v1/underlying/{ticker}/rvol`

Time-bucketed bars with call/put volume + premium and an
average-volume baseline computed from `avgPeriod` recent days,
plus aggregate RVOL stats.

## Path parameters

- `ticker` string, required

## Query parameters

- `interval` string
- `bucket` '1min' | '5min' | '10min' | '15min' | '30min' | '1d' | '1w'
- `avg_period` string
- `date` string, date
- `order_by` 'rvol' | 'volume' | 'premium' | 'time'
- `order` 'asc' | 'desc'
- `limit` integer
- `format` 'full' | 'summary'

## Response `200`

RVOL bars + aggregate stats.

- UnderlyingRvolSuccess
  - `data` UnderlyingRvolResponse, required
    - `bars` UnderlyingRvolBar[], required
      - `timestamp` string, required
      - `timestampEnd` string, required
      - `callVolume` integer, required
      - `putVolume` integer, required
      - `volume` integer, required
      - `premium` number, double, required
      - `stockPrice` number, double, required
      - `avgCallVolume` number, double, nullable
      - `avgPutVolume` number, double, nullable
      - `avgVolume` number, double, nullable
      - `avgPremium` number, double, nullable
      - `avgDaysCount` integer, nullable
    - `stats` RvolStats, required
      - `todayVolume` integer, required
      - `todayPremium` number, double, required
      - `avgVolume` number, double, required
      - `avgPremium` number, double, required
      - `rvolVolume` number, double, required — `todayVolume / avgVolume`.
      - `rvolPremium` number, double, required — `todayPremium / avgPremium`.
      - `avgDaysCount` integer, required — Number of days actually used in the baseline.
    - `callRvol` number, double, required — Aggregate call-volume RVOL.
    - `putRvol` number, double, required — Aggregate put-volume RVOL.
  - `meta` Meta, required
    - `timestamp` string, date-time, required — Server-side timestamp the response was generated at.
    - `requestId` string, required — Short opaque ID for log correlation.

## Other responses

- `400` — Request validation failed.
- `401` — Missing or invalid API key.
- `402` — The account's shared Skylit credit balance is lower than this route's cost. Top up to continue. Carries `X-Credits-Remaining: 0`.
- `429` — Per-minute rate limit exceeded.

---

[API](https://skmtc.net/skylit/apis/flowseeker-skylit-public-api.md) · [All operations](https://skmtc.net/skylit/apis/flowseeker-skylit-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/skylit/flowseeker-skylit-public-api/versions/3280190b1b24/schema)