---
title: "Changes to ATM option chain pair for one ticker and one expiry (on-demand materialization)"
method: GET
path: "/v1/options/atm-chains/{ticker}"
---

# Changes to ATM option chain pair for one ticker and one expiry (on-demand materialization)

`GET /v1/options/atm-chains/{ticker}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 4 revisions.

- **2026-09-23** `5f6ba5c8e653` — 1 info

## Changes

- **2026-09-23** `5f6ba5c8e653` — 1 info
  - for the `query` request parameter `expiration`, the type was generalized from no type to `string`, and format from no format to `date`

---

[Operation](https://skmtc.dev/yehangshe/apis/gex-heatmap-data-api/docs/v1/options/atm-chains/:ticker/get.md) · [API](https://skmtc.dev/yehangshe/apis/gex-heatmap-data-api.md) · [Page](https://skmtc.dev/yehangshe/apis/gex-heatmap-data-api/changes/v1/options/atm-chains/:ticker/get)