---
title: "US Options Trade and Quote Minute Bar"
method: GET
path: "/v1/data/us-equity-opt/taq-1min/{identifier}"
tags: ["us-equity-opt-intraday-bar"]
---

# US Options Trade and Quote Minute Bar

`GET /v1/data/us-equity-opt/taq-1min/{identifier}`

The U.S. Options Trade and Quote (TAQ) Minute Bar dataset provides minute-level aggregated analytics derived from consolidated OPRA trades and top-of-book quotes for U.S. listed options. Each one-minute bar contains ~60 analytical and statistical fields, including Open, High, Low, Close (OHLC) prices based on trade and quote events, along with detailed measures such as minimum and maximum bid-ask spread, trade counts at bid/mid/ask, and quote snapshots at the start and end of each interval. These features enable precise analysis of price formation, liquidity, and execution behavior at the intraday level. The dataset covers the regular options trading session from 09:30:00 to 16:15:00 Eastern Time and Curb session to 17:00:00 Eastern Time if it is available, and is derived from OPRA consolidated last-sale and quotation data. 

 For more details, please refer to the dataset documentation: [US Options Trade and Quote Minute Bar Guide](https://us-options-market-data-docs.s3.us-east-1.amazonaws.com/algoseek.US.Options.TAQ.Minute.Bars.pdf).

<details>
<summary>**Advanced Filtering**</summary>

You can provide one or multiple filter expressions based on the dataset's columns to narrow down the results. For example, `StartDate.gt=2023-01-01&StartDate.lt=2023-12-31`, `Ticker=AAPL`. 

Please refer to the <a href="https://algoseek.com/docs/rest-api/tutorial/advanced-filtering">Advanced Filtering Guide</a> for the extensive reference.
</details>


<details>
<summary>**Optimizing Performance**</summary>

Some queries to this endpoint may be slow due to the size of the data chunk requested. If this becomes an issue, consider narrowing down the response data with query parameters. 

For more details, please refer to the <a href="https://algoseek.com/docs/rest-api/tutorial/optimizing-query-performance">Query Performance Guide</a>.
</details>

## Path parameters

- `identifier` string, required — Dataset's security identifier

## Query parameters

- `period` string, nullable — A string representing the time period for which to retrieve data. The format and accepted values depend on the dataset. If not provided, data for all available periods will be returned.
- `sort` string, nullable — Sorting criteria for the results. Provide a column name with optional prefix '+' for ascending order, or prefix with '-' for descending order. Multiple sorting fields may be supported depending on the dataset. If sort prefix is not provided, the ascending order is applied.
- `columns` string, nullable — A comma-separated list of columns to include in the response. Use this parameter to select only specific fields from the dataset. If not provided, all available columns will be returned.
- `offset` integer — Number of records to skip before returning results. To be used with the `limit` parameter for pagination. If not provided, defaults to 0.
- `limit` integer — Maximum number of records to return. Default and maximum values depend on the response format; see `format_limits` in the schema for details.
- `response_format` 'json' | 'csv' | 'csv_gzip' — Note the lowercase which is used for the consistency with other projects and tools

## Response `200`

JSON, CSV file, or gzip-compressed CSV file, depending on the value of `response_format` query parameter

- USOptionsTradeandQuoteMinuteBarDataOut
  - `data` USOptionsTradeandQuoteMinuteBarDataDetailsOut[], required
    - `TradeDate` string, date, nullable — The trading day
    - `BarDateTime` string, date-time, nullable — The timestamp of the bar start (EST)
    - `Ticker` string, nullable — Symbol name
    - `CallPut` string, nullable — Option contract class: "C" for Call or "P" for Put
    - `Strike` number, nullable — Option contract strike price
    - `ExpirationDate` string, date, nullable — Expiration date of the option contract
    - `OpenBidTimeOffset` number, nullable — Time of the first bid
    - `OpenBidPrice` number, nullable — The NBBO bid price as of the bar open
    - `OpenBidSize` integer, nullable — Total number of contracts from all exchanges with OpenBidPrice
    - `OpenAskTimeOffset` number, nullable — Time of the first ask
    - `OpenAskPrice` number, nullable — The NBBO bid price as of the bar open
    - `OpenAskSize` integer, nullable — Total number of contracts from all exchanges with OpenAskPrice
    - `OpenTradeTimeOffset` number, nullable — Time of the first trade
    - `OpenTradePrice` number, nullable — Price of the first trade
    - `OpenTradeSize` integer, nullable — Number of contracts of the first trade
    - `HighBidTimeOffset` number, nullable — Time of the highest NBBO bid price
    - `HighBidPrice` number, nullable — The highest NBBO bid price
    - `HighBidSize` integer, nullable — Total number of contracts from all exchanges with HighBidPrice
    - `HighAskTimeOffset` number, nullable — Time of the highest NBBO ask price
    - `HighAskPrice` number, nullable — The highest NBBO ask price
    - `HighAskSize` integer, nullable — Total number of contracts from all exchanges with HighAskPrice
    - `HighTradeTimeOffset` number, nullable — Time of the highest trade
    - `HighTradePrice` number, nullable — Price of the highest Trade
    - `HighTradeSize` integer, nullable — Number of contracts of the highest trade
    - `LowBidTimeOffset` number, nullable — Time of the lowest NBBO bid price
    - `LowBidPrice` number, nullable — The lowest NBBO bid price
    - `LowBidSize` integer, nullable — Total number of contracts from all exchanges with LowBidPrice
    - `LowAskTimeOffset` number, nullable — Time of the lowest NBBO ask price
    - `LowAskPrice` number, nullable — The lowest NBBO ask price
    - `LowAskSize` integer, nullable — Total number of contracts from all exchanges with LowAskPrice
    - `LowTradeTimeOffset` number, nullable — Time of the lowest trade
    - `LowTradePrice` number, nullable — Price of the lowest trade
    - `LowTradeSize` integer, nullable — Number of contracts of the lowest trade
    - `CloseBidTimeOffset` number, nullable — Time of the first bid
    - `CloseBidPrice` number, nullable — The NBBO bid price as of the bar close
    - `CloseBidSize` integer, nullable — Total number of contracts from all exchanges with CloseBidPrice
    - `CloseAskTimeOffset` number, nullable — Time of the first ask
    - `CloseAskPrice` number, nullable — The NBBO ask price as of the bar close
    - `CloseAskSize` integer, nullable — Total number of contracts from all exchanges with CloseAskPrice
    - `CloseTradeTimeOffset` number, nullable — Time of the last trade
    - `CloseTradePrice` number, nullable — Price of the last trade
    - `CloseTradeSize` integer, nullable — Number of contracts of the last trade
    - `UnderOpenBidPrice` number, nullable — Underlying Ticker NBBO Bid price at time of the first option bar event
    - `UnderOpenAskPrice` number, nullable — Underlying Ticker NBBO Ask price at time of the first option bar event
    - `UnderCloseBidPrice` number, nullable — Underlying Ticker NBBO Bid price at time of the last option bar event
    - `UnderCloseAskPrice` number, nullable — Underlying Ticker NBBO Ask price at time of the last option bar event
    - `MinSpread` number, nullable — Minimum NBBO Bid-Ask spread size
    - `MaxSpread` number, nullable — Maximum NBBO Bid-Ask spread size
    - `CancelSize` integer, nullable — Total of number of contracts canceled (when a previously reported trade is cancelled)
    - `VolumeWeightPrice` number, nullable — Volume-weighted average price excluding FINRA/TRF trades
    - `NBBOQuoteCount` integer, nullable — The number of Bid and Ask NNBO quotes during the bar period
    - `TradeAtBid` integer, nullable — Total trade volume at or below the bid price
    - `TradeAtBidMid` integer, nullable — Total trade volume between the bid and mid price
    - `TradeAtMid` integer, nullable — Total trade volume at the mid price
    - `TradeAtMidAsk` integer, nullable — Total trade volume between the mid and ask price
    - `TradeAtAsk` integer, nullable — Total trade volume at or above the ask price
    - `TradeAtCrossOrLocked` integer, nullable — Total trade volume when NBBO is locked or crossed
    - `Volume` integer, nullable — Total number of contracts traded
    - `TotalTrades` integer, nullable — Total number of trades
    - `FinraVolume` integer, nullable — Total number of contracts traded that are reported by FINRA Exchange
  - `pagination` PaginationDetailsOut, required
    - `offset` integer — The number of records skipped to fetch the current page
    - `limit` integer, required — The maximum number of records in the current page
    - `next_offset` integer, nullable — The number of records to skip to fetch the next page

## Other responses

- `403` — Forbidden
- `422` — Validation Error
- `429` — Request rejected because the identity or team exceeded a configured monthly or per-minute usage quota. When available, the response includes rate-limit headers describing the current quota.

---

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