Skip to main content

Is There a Limit Up/Limit Down for TradFi Perps?

  • Updated

Limit up/limit down restrictions on BitMEX TradFi Perps are only enforced when all external pricing sources are lost and the sole remaining price source is the TradFi Perps own order book. In this scenario, RDH Limited, Inc may limit trading to approximately 2% of the Mark Price per one-hour period.

Under normal conditions, the index price draws from three sources – TradFi prices, tokenised stock prices, and the BitMEX order book. Price limits are not enforced when these external feeds are active.

What does the 2% limit mean in practice?

If the Mark Price of an Equity Perps contract is 100 USDT at the start of a one-hour period, the price is restricted to a range of approximately 98 USDT to 102 USDT during that window. This prevents sudden, extreme price moves caused by low-liquidity orderbook conditions.

Can the price bands be adjusted?

Yes. If the new price is determined to be genuine – meaning it reflects real market conditions rather than manipulation or thin order book dynamics – the price bands may be widened. This allows for quicker price discovery and a return to normal trading conditions.

Related articles

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.