Historical Data

The Gemini marketplace conducts auctions for certain trading pairs every day (including weekends and holidays), which foster moments of elevated liquidity and price discovery. The Auction file contains the auction-only order book for the 4pm ET BTCUSD, ETHUSD, or ZECUSD auction on the Gemini exchange on weekdays (non-NYSE holidays).

The auction-only order book supports both market and limit orders. These orders rest on the auction-only book until the auction runs. Auction-only orders may be placed up until the auction runs but may not be cancelled after the final indicative price is published at 3:50pm ET

Only auction-only orders that were explicitly accepted to the book show up in this file. Orders that were placed but rejected due to insufficient funds or self-cross do not show up in this file. There is not an explicit close event portrayed in this file. An auction-only order is closed and off the books when that order id is either cancelled or filled with no quantity remaining. Fill events are portrayed as a single rows for each order filled during the auction; both continuous book and auction book orders may be filled. Auction-only orders are distinguished by the Execution Option value auction-only.

Availability dates:
Gemini launched the 4pm ET BTCUSD auction on 21 September 2016.
Gemini launched the 4pm ET ETHUSD auction on 28 July 2017.
Gemini launched the 4pm ET ZECUSD auction on 22 May 2018

Order Book data on cryptocurrencies such as Bitcoin and Ethereum recorded by Gemini, a digital asset exchange. The offering shows open orders at the beginning of the day, orders placed, filled, and canceled during the day and are distinguished by the Event Type field. A filter to only receive the Fill events is also available. Auction data is not included. The currency pair symbols are formatted as CCY1CCY2 where prices are in CCY2 and quantities are in CCY1, the following pairs are supported:

Currency Pair	Quantity currency	Price currency
BTCUSD	BTC	USD
ETHUSD	ETH	USD
ETHBTC	ETH	BTC
ZECUSD	ZEC	USD
ZECBTC	ZEC	BTC
ZECETH	ZEC	ETH

Order Book data on cryptocurrencies such as Bitcoin and Ethereum recorded by Gemini, a digital asset exchange. The offering shows open orders at the beginning of the day, orders placed, filled, and canceled during the day and are distinguished by the Event Type field. A filter to only receive the Fill events is also available. Auction data is not included. The currency pair symbols are formatted as CCY1CCY2 where prices are in CCY2 and quantities are in CCY1, the following pairs are supported:

Currency Pair	Quantity currency	Price currency
BTCUSD	BTC	USD
ETHUSD	ETH	USD
ETHBTC	ETH	BTC
ZECUSD	ZEC	USD
ZECBTC	ZEC	BTC
ZECETH	ZEC	ETH

Open-Close data is a volume summary file for trading activity on the BZX exchange. It summarizes and buckets the volume by origin (customer, professional customer, broker-dealer, and market maker), buying/selling, and opening/closing criteria. The customer and professional customer volume is further broken down into trade size buckets (less than 100 contracts, 100-199 contracts, greater than 199 contracts). The data currently goes back to 1/2/2018 and contains all series in an underlying security's chain-if it has volume.

Open-Close data is a volume summary file of trading activity on the Cboe C1 exchange (does not include activity from C2, BZX, or EDGX) that summarizes the volume (contracts traded) by origin (customer and firm orders only), original order size and the opening or closing position of the order. The Open-Close volume is further broken into categories of buy/sell, open/close and order size "buckets". The data for all Cboe (C1) securities goes back to 1990 and contains all series in an underlying security's chain-if it has volume. The Open-Close data is available as a data download by individual underlying symbols, or as a daily update that includes all Cboe (C1) traded options for the previous trade day's data going forward, and as bulk data that includes all Cboe (C1) traded securities for the time frame chosen. For pricing, please see “LiveVol Fees” in the Cboe Exchange Fee Schedule.

*The Cboe Options Exchange (C1) has migrated to Bats technology effective October 7, 2019. The C1 Open-Close file specification has changed; to see the file specifications for the before and after, please click here.

Open-Close data is a volume summary file for trading activity on the C2 exchange. It summarizes and buckets the volume by origin (customer, professional customer, broker-dealer, and market maker), buying/selling, and opening/closing criteria. The customer and professional customer volume is further broken down into trade size buckets (less than 100 contracts, 100-199 contracts, greater than 199 contracts). The data currently goes back to 1/2/2018 and contains all series in an underlying security's chain-if it has volume.