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

# Intraday chart bars for a ticker

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

Returns time-bucketed bars aggregating options activity for the
underlying (call/put volume + premium, P/C ratio, bid/ask
execution split) plus the underlying stock price at each
boundary. Backed by the same intraday rollup tables that power
the chart modal in the Skylit UI.

## Path parameters

- `ticker` string, required

## Query parameters

- `interval` string, required
- `bucket` '1min' | '5min' | '10min' | '15min' | '30min' | '1d' | '1w', required

## Response `200`

Intraday chart bars.

- UnderlyingChartSuccess
  - `data` UnderlyingChartBar[], required
    - `timestamp` string, required — Bucket start, Unix seconds (returned as a string for JS-precision safety).
    - `timestampEnd` string, required
    - `callVolume` integer, required
    - `putVolume` integer, required
    - `candleVolume` integer, required — `callVolume + putVolume`.
    - `callPremium` number, double, required
    - `putPremium` number, double, required
    - `candlePremium` number, double, required
    - `stockPrice` number, double, required
    - `pcRatio` number, double, required — `putVolume / callVolume` (0 when no calls).
    - `avgVolume` number, double — 30D baseline volume for this time-of-day slot. Omitted when insufficient history.
    - `avgPremium` number, double — 30D baseline premium for this time-of-day slot.
    - `chainBidPct` number, double, required — % of bucket volume executed at/below the bid.
    - `chainAskPct` number, double, required — % of bucket volume executed at/above the ask.
  - `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)