How do I calculate the Contract Size and Minimum Trade Amount through /instrument endpoint?

29 May 2024 18:09
Updated

The Contract Sizes and Minimum Trade Amounts are listed on the contract's Specification Page (Such as https://www.bitmex.com/app/contract/XBTUSD)

Screenshot 2024-02-16 at 2.55.45 PM.png

If you prefer to calculate these values manually using the /instrument endpoint, you can follow the guidelines below.

The specific calculation method depends on the payout type, which is outlined in the Perpetual Contracts Guide and Futures Guide. You can also identify the type by checking the isQuanto and isInverse parameters in the /instrument endpoint response.

For Inverse Contracts

Contract Size (value of 1 contract) = Multiplier/underlyingToSettleMultiplier

Minimum Trade Amount= Contract Size * lotSize

For Linear Contracts

Contract Size = 1/underlyingToPositionMultiplier

Minimum Trade Amount = Contract Size * lotSize

For Quanto Contracts

Contract Size = multiplier in settlCurrency

Minimum Trade Amount = lotSize

This website is operated by HDR Global Trading Limited, a company incorporated under the International Business Companies Act of 1994 of the Republic of Seychelles with a company number of 148707 and registered address at Global Gateway 8, Rue de la Perle, Providence Mahé, Seychelles (“HDR”). HDR wholly owns BitMEX, a Bitcoin-based trading platform.

Access to trading or holding positions on BitMEX is prohibited for any person or entity that is located, incorporated or otherwise established in, or a citizen or a resident of: (i) the United States of America, Québec (Canada), the Hong Kong Special Administrative Region of the People’s Republic of China, the Republic of Seychelles, Bermuda, Cuba, Crimea and Sevastopol, Iran, Syria, North Korea or Sudan; (ii) any state, country or other jurisdiction that is embargoed by the United States of America; or (iii) any other jurisdiction where the services offered by BitMEX are restricted (collectively “Restricted Jurisdictions”). If it is determined that any BitMEX user has given false representations as to their location, incorporation, establishment, citizenship or residence, or HDR detects a user is from a Restricted Jurisdiction as described above, HDR reserves the right to immediately close their accounts and liquidate any open positions. HDR may, in its sole discretion, implement controls to restrict access to the BitMEX trading platform in any of the Restricted Jurisdictions.