---
title: "POST /holdings/{id}/opening-basis"
method: POST
path: "/holdings/{id}/opening-basis"
tags: ["holdings"]
---

# POST /holdings/{id}/opening-basis

`POST /holdings/{id}/opening-basis`

## Request

- Base URL: `https://api.betteroff.finance`
- URL: `https://api.betteroff.finance/holdings/{id}/opening-basis`
- Auth: HTTP bearer

## Path parameters

- `id` string, required

## Request body

- object
  - `costBasis` number, required
  - `acquiredDate` string, required

## Response `200`

Success

## Other responses

- `default`: Problem details

---

[API](https://skmtc.dev/betteroff/apis/betteroff-api.md) · [All operations](https://skmtc.dev/betteroff/apis/betteroff-api/llms.txt) · [OpenAPI document](https://skmtc.dev/betteroff/apis/betteroff-api/revisions/bc858c8d428d?raw)