Index membership

Who was in the index, and when.

Point-in-time membership for the S&P 500, Nasdaq-100, and Dow Jones. Pro opens the live catalog and the same JSON.

Open in Explore

Daily charts
JSON API
Client credentials

$SPXS&P 500

2,326.53+13.7%

Close2,326.5299

Span13.7%

Illustrated daily closes — not a live quote.

200/api/v1/families/index-membership/symbols/$SPX

{
  "family": "index-membership",
  "symbol": "$SPX",
  "safeSymbol": "$SPX",
  "rowCount": 2,
  "dateMin": "2016-11-03",
  "dateMax": "2016-11-04",
  "lastClose": 2326.5299,
  "historyYears": 10,
  "historyCutoff": "2016-09-13",
  "emptyReason": null,
  "bars": [
    {
      "time": "2016-11-03",
      "open": 2308.8052,
      "high": 2319.398,
      "low": 2308.6711,
      "close": 2316.6793,
      "volume": 4490100
    },
    {
      "time": "2016-11-04",
      "open": 2314.5232,
      "high": 2332.4068,
      "low": 2311.3258,
      "close": 2326.5299,
      "volume": 1782153
    }
  ]
}

API

Symbol series

Same paths and fields as the live API. Every data GET needs client_id and client_secret.

GET/api/v1/families/index-membership/symbols/$SPX

Request

curl -sS -u "$CLIENT_ID:$CLIENT_SECRET" \
  https://barquant.dev/api/v1/families/index-membership/symbols/$SPX

200Sample response

{
  "family": "index-membership",
  "symbol": "$SPX",
  "safeSymbol": "$SPX",
  "rowCount": 2,
  "dateMin": "2016-11-03",
  "dateMax": "2016-11-04",
  "lastClose": 2326.5299,
  "historyYears": 10,
  "historyCutoff": "2016-09-13",
  "emptyReason": null,
  "bars": [
    {
      "time": "2016-11-03",
      "open": 2308.8052,
      "high": 2319.398,
      "low": 2308.6711,
      "close": 2316.6793,
      "volume": 4490100
    },
    {
      "time": "2016-11-04",
      "open": 2314.5232,
      "high": 2332.4068,
      "low": 2311.3258,
      "close": 2326.5299,
      "volume": 1782153
    }
  ]
}