Register record·DATASET·EU·REGULATORVERIFIED · checked 19h ago
E
European Central Bank — Open market operations (OMO)
Official time series on European Central Bank open market operations (OMO), published via the ECB Data Portal as the OMO dataflow over the SDMX 2.1 REST API. A single endpoint returns data in XML (SDMX-ML), CSV, or JSON formats, and users can extract specific series using a key path together with startPeriod, endPeriod, or lastNObservations filters. The same series can also be browsed and charted interactively on the ECB Data Portal website. The dataset is maintained by the European Central Bank and covers euro-area monetary policy operations, useful for economic and financial analysis.Open market operations (OMO) — official time series from the European Central Bank Data Portal, published as the OMO dataflow over SDMX 2.1 REST. One endpoint serves XML (SDMX-ML), CSV (?format=csvdata) and JSON (?format=jsondata); extract exactly the series you need with a key path and startPeriod / endPeriod / lastNObservations filters. Browse and chart the same series on the ECB Data Portal.
economyprices
Trust score
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Data schema (30 fields)
Filterable via the API (9)
FREQREF_AREAOMO_TYPEOPERATION_CATOPERATION_SUBCATDATA_TYPETENDER_REFCURRENCYTIME_PERIOD
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| FREQFrequency | dimension | Frequency of the observation, e.g. daily or monthly.2 codes (e.g. Daily - businessweek, Monthly) |
| REF_AREAReference area | dimension | Geographic reference area covered by the operation, e.g. euro area.2 codes (e.g. Euro area (Member States and Institutions of the Euro Area) changing composition, Euro area 20 (fixed composition) as of 1 January 2023) |
| OMO_TYPEOpen market operations type | dimension | Type of open market operation, such as tender or purchase.2 codes (e.g. Tender, Purchase) |
| OPERATION_CATOpen market operations | dimension | Category of open market operation, e.g. main or longer-term refinancing.7 codes (e.g. Longer-term refinancing operations, Main refinancing operations, Other type of operation) |
| OPERATION_SUBCATOpen market operations subcategories | dimension | Subcategory further classifying the open market operation.2 codes (e.g. Not applicable, USD 7-days) |
| DATA_TYPE | dimension | Type of data reported, e.g. outstanding amount or holdings.4 codes (e.g. Outstanding, Quarter-end amortisation adjustment and redemptions of coupon STRIPS, Holdings) |
| TENDER_REFTender ID | dimension | Identifier of the specific tender operation.46 codes (e.g. Tender ID 20260028, Tender ID 20260037, Tender ID 20260046) |
| CURRENCY | dimension | Currency in which the operation amount is denominated.2 codes (e.g. Euro, US dollar) |
| TIME_PERIODTime period or range | time | Date or period to which the observation refers.Time dimension — filter with startPeriod / endPeriod query params. |
| OBS_VALUEObservation value | number | Numeric value recorded for the observation.The observed numeric value for each cell. |
| TIME_FORMATTime format code | attribute | Code indicating the format used for the time period.Code indicating the format used for the time period. |
| MATURITY_DATE | attribute | Date on which the operation matures.Date on which the operation matures. |
| ALLOTTED_AMOUNT | attribute | Amount allotted in the tender operation.Amount allotted in the tender operation. |
| SETTLEMENT_DATE | attribute | Date on which the operation is settled.Date on which the operation is settled. |
| BREAKS | attribute | Indicator flagging breaks in the time series.Indicator flagging breaks in the time series. |
| COLLECTIONCollection indicator | attribute | Indicator of the method used to collect the data.Indicator of the method used to collect the data. |
| COMPILING_ORGCompiling organisation | attribute | Organisation responsible for compiling the data.Organisation responsible for compiling the data. |
| DISS_ORGData dissemination organisation | attribute | Organisation responsible for disseminating the data.Organisation responsible for disseminating the data. |
| AGG_EQUNAggregation equations | attribute | Equation describing how the series is aggregated.Equation describing how the series is aggregated. |
| COMPILATION | attribute | Notes on how the data were compiled.Notes on how the data were compiled. |
| COVERAGE | attribute | Description of the scope or coverage of the data.Description of the scope or coverage of the data. |
| DECIMALS | attribute | Number of decimal places in the observation value.Number of decimal places in the observation value. |
| SOURCE_AGENCY | attribute | Agency that originally sourced the data.Agency that originally sourced the data. |
| TITLE | attribute | Title of the data series.Title of the data series. |
| TITLE_COMPLTitle complement | attribute | Additional descriptive text complementing the series title.Additional descriptive text complementing the series title. |
| UNIT | attribute | Unit of measurement for the observation value.Unit of measurement for the observation value. |
| UNIT_MULTUnit multiplier | attribute | Power-of-ten multiplier applied to the observation value.Power-of-ten multiplier applied to the observation value. |
| OBS_STATUSObservation status | attribute | Status code indicating the nature of the observation, e.g. normal or estimated.Status code indicating the nature of the observation, e.g. normal or estimated. |
| OBS_CONFObservation confidentiality | attribute | Confidentiality status of the observation.Confidentiality status of the observation. |
| OBS_PRE_BREAKPre-break observation value | attribute | Value of the observation prior to a break in the series.Value of the observation prior to a break in the series. |
Schema captured from sdmx 1 day ago.
Query the data
Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.
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Sample data (5 records)
Record 1FREQ: B · OBS_COM: —
{
"FREQ": "B",
"OBS_COM": null,
"CURRENCY": "EUR",
"OBS_CONF": "F",
"OMO_TYPE": "T",
"REF_AREA": "U2",
"DATA_TYPE": "O",
"OBS_VALUE": 6624,
"OBS_STATUS": "A",
"TENDER_REF": "20260028",
"TIME_PERIOD": "2026-06-30",
"OBS_PRE_BREAK": null,
"OPERATION_CAT": "LTRO",
"OPERATION_SUBCAT": "_Z"
}Record 2FREQ: B · OBS_COM: —
{
"FREQ": "B",
"OBS_COM": null,
"CURRENCY": "EUR",
"OBS_CONF": "F",
"OMO_TYPE": "T",
"REF_AREA": "U2",
"DATA_TYPE": "O",
"OBS_VALUE": 3424,
"OBS_STATUS": "A",
"TENDER_REF": "20260037",
"TIME_PERIOD": "2026-07-28",
"OBS_PRE_BREAK": null,
"OPERATION_CAT": "LTRO",
"OPERATION_SUBCAT": "_Z"
}Record 3FREQ: B · OBS_COM: —
{
"FREQ": "B",
"OBS_COM": null,
"CURRENCY": "EUR",
"OBS_CONF": "F",
"OMO_TYPE": "T",
"REF_AREA": "U2",
"DATA_TYPE": "O",
"OBS_VALUE": 3201,
"OBS_STATUS": "A",
"TENDER_REF": "20260046",
"TIME_PERIOD": "2026-08-25",
"OBS_PRE_BREAK": null,
"OPERATION_CAT": "LTRO",
"OPERATION_SUBCAT": "_Z"
}Record 4FREQ: B · OBS_COM: —
{
"FREQ": "B",
"OBS_COM": null,
"CURRENCY": "EUR",
"OBS_CONF": "F",
"OMO_TYPE": "T",
"REF_AREA": "U2",
"DATA_TYPE": "O",
"OBS_VALUE": 7011,
"OBS_STATUS": "A",
"TENDER_REF": "20260057",
"TIME_PERIOD": "2026-09-29",
"OBS_PRE_BREAK": null,
"OPERATION_CAT": "LTRO",
"OPERATION_SUBCAT": "_Z"
}Record 5FREQ: B · OBS_COM: —
{
"FREQ": "B",
"OBS_COM": null,
"CURRENCY": "EUR",
"OBS_CONF": "F",
"OMO_TYPE": "T",
"REF_AREA": "U2",
"DATA_TYPE": "O",
"OBS_VALUE": 4018,
"OBS_STATUS": "A",
"TENDER_REF": "20260066",
"TIME_PERIOD": "2026-10-14",
"OBS_PRE_BREAK": null,
"OPERATION_CAT": "LTRO",
"OPERATION_SUBCAT": "_Z"
}Live sample captured at profiling time — values may have changed upstream.
Verification Status
Using the API
Query examples
curl -s 'https://data-api.ecb.europa.eu/service/dataflow/ECB' -H 'Accept: application/vnd.sdmx.structure+xml;version=2.1'All dataflows (datasets) published by this agency, as SDMX-ML.
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