Total margin & short

Overview

total-margin-short returns one market-wide row per trading day with the total margin-purchase and short-sale balances across all listed stocks, sourced from the official TWSE margin trading report. Each row carries its source role so the totals are traceable. This endpoint is a preview surface — coverage is currently partial and served as a snapshot rather than a fully backfilled history.

Coverage

Example response

A real response from this endpoint. Rows are returned under "rows", 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": "total_margin_short",
  "dataset_id": "total_margin_short",
  "rows": [
    {
      "market": "TWSE",
      "trade_date": "2026-08-03",
      "margin_purchase_balance_total": 9120700,
      "short_sale_balance_total": 185322,
      "margin_purchase_buy_total": 490794,
      "margin_purchase_sell_total": 510139,
      "short_sale_buy_total": 35122,
      "short_sale_sell_total": 32051,
      "margin_purchase_amount_total": null,
      "currency": "TWD",
      "market_scope": "TWSE",
      "source_provider": "derived_twmd",
      "source_role": "derived_market_total_from_margin_short_enhanced",
      "source_lineage": {
        "emitter": "build_margin_short_total_candidates",
        "derivation": "sum per-ticker margin_short_enhanced by (market,trade_date)",
        "verified_vs": "total_margin_short_daily_items official overlap (n6, 1551/1551)"
      },
      "data_gaps": [
        "<Chinese value - see the zh page>"
      ],
      "not_investment_advice": true
    }
  ],
  "count": 1,
  "plan_id": "enterprise",
  "meta": {
    "plan": "enterprise",
    "row_limit": 100000,
    "market": "TWSE",
    "start_date": "2026-08-03",
    "end_date": "2026-08-03",
    "private_beta_contract": true,
    "twse_only_scope": true,
    "is_limited": false
  }
}

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

Chinese data values are shown as a marker here so this page stays in English; the /zh page shows them verbatim.

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.). Total margin & short [Data set]. TW Market Data. Retrieved 2026-09-05, from https://twmarketdata.com/en/docs/api/capital-flows/total-margin-short

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.

• Block trade (daily)

  Joins on market + trade_date

• Foreign holding

  Joins on market + trade_date

• Institutional flow

  Joins on market + trade_date

• Securities-Lending Utilization

  Joins on market + trade_date

• Margin & short

  Joins on market + trade_date

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 rows array.

curl "https://api.twmarketdata.com/v2/datasets/total-margin-short?start_date=2026-08-03&end_date=2026-08-03" \
  -H "X-API-Key: sk_live_..."

Filtering

Python

import requests

resp = requests.get(
    "https://api.twmarketdata.com/v2/datasets/total-margin-short",
    params={},
    headers={"X-API-Key": "sk_live_..."},
)
resp.raise_for_status()
print(resp.json()["rows"])

OpenAPI

This endpoint is GET /v2/datasets/total-margin-short. The full machine-readable schema (parameters, security, response envelope) lives in the OpenAPI spec.

Notes & limitations

• Preview grade: coverage is partial and served as a snapshot, not a fully backfilled daily history — do not assume every trading day is present.