Options Put/Call Ratio

Overview

taifex-put-call-ratio returns one row per trading day with put and call volume, their ratio, put and call open interest and the OI ratio. It is a market-wide sentiment gauge sourced from the official TAIFEX feed.

Coverage

Example response

A real response from this endpoint. Rows are returned under "data", and provenance is carried in the shape shown below — it is not identical across datasets, so read this page's rather than assuming another's.

{
  "dataset_id": "taifex_put_call_ratio",
  "request_context": {
    "scope": "taifex_option_put_call_ratio_only",
    "coverage_type": "official_dated_daily",
    "filters": {
      "trade_date": "2026-08-04",
      "date_from": null,
      "date_to": null,
      "limit": 50
    },
    "min_trade_date": "2026-08-04",
    "max_trade_date": "2026-08-04"
  },
  "quality": {
    "row_count": 1,
    "sensitive_fields_exposed": false
  },
  "lineage": {
    "source_families": [
      "TAIFEX_PUTCALLRATIO"
    ],
    "semantics": "TAIFEX OpenAPI PutCallRatio: option put/call volume ratio + open-interest ratio (market-wide daily)"
  },
  "error": null,
  "data": [
    {
      "trade_date": "2026-08-04",
      "market": "TAIFEX",
      "put_volume": 175268,
      "call_volume": 171967,
      "put_call_volume_ratio": 101.92,
      "put_oi": 94288,
      "call_oi": 91937,
      "put_call_oi_ratio": 102.56,
      "source_family": "TAIFEX_PUTCALLRATIO",
      "lineage": {
        "source": "TAIFEX_OpenAPI",
        "endpoint": "PutCallRatio"
      }
    }
  ],
  "data_count": 1,
  "known_gaps": [
    "rolling_window_daily_accumulator_full_history_via_csv_pending",
    "not_investment_advice"
  ],
  "warnings": [
    "not_investment_advice"
  ],
  "envelope": {
    "dataset_id": "taifex_put_call_ratio",
    "scope": "taifex_option_put_call_ratio_only",
    "row_count": 1
  }
}

Captured from the live API on 2026-07-20.

Provenance

These columns are returned alongside the data and record where the row came from. They are provenance, not the dataset's subject matter, so they are listed here rather than in the field table.

Licence and attribution

Part of the data in this service is obtained from the Government Open Data Platform (data.gov.tw) and used under the Open Government Data License, version 1.0. Providing agencies: Taiwan Stock Exchange, Taipei Exchange, Taiwan Futures Exchange, Taiwan Depository & Clearing Corporation, National Development Council, Central Bank of the Republic of China (Taiwan), Department of Statistics of the Ministry of Economic Affairs, and Customs Administration of the Ministry of Finance. The value-added processing, derived calculations and presentation in this service are the responsibility of TWMD and are not associated with the providing agencies.

TW Market Data. (n.d.). Options Put/Call Ratio [Data set]. TW Market Data. Retrieved 2026-09-07, from https://twmarketdata.com/en/docs/api/derivatives/taifex-put-call-ratio

The version is the dataset's own as_of, not the date this page was built. Where we have no as_of the field is left out rather than filled in. Check a signature

Related datasets

Datasets that join with this one. The key each pair aligns on is shown, so you can plan a multi-table query without guessing.

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Getting started

1. Put your key in the X-API-Key header.
2. Add query parameters (symbol, date range, limit).
3. Send the request and read the data array.

curl "https://api.twmarketdata.com/v2/datasets/taifex-put-call-ratio?trade_date=2026-08-04" \
  -H "X-API-Key: sk_live_..."

Filtering

Python

import requests

resp = requests.get(
    "https://api.twmarketdata.com/v2/datasets/taifex-put-call-ratio",
    params={"trade_date": "2026-08-04"},
    headers={"X-API-Key": "sk_live_..."},
)
resp.raise_for_status()
print(resp.json()["data"])

OpenAPI

This endpoint is GET /v2/datasets/taifex-put-call-ratio. The full machine-readable schema (parameters, security, response envelope) lives in the OpenAPI spec.