bitmex_utils

Utility scripts for BitMEX

Liquidation Calculator

The code is a little bit buggy but the formulas were provided from BitMEX support. The prices are off usually off by less than a dollar, don’t think this is resolvable.

The formulas are:

Long:

Bankrupt = avg_entry_price / (1 + initial_margin)
Liquidation = bankrupt + (avg_entry_price * (maintenance_margin + funding_rate)

Short:

Bankrupt = avg_entry_price / (1 - initial_margin)
Liquidation = bankrupt - (avg_entry_price * (maintenance_margin - funding_rate)

For margin calculations:

initial_margin = (1 / leverage) - taker_fee - taker_fee
maintenance_margin = 0.5% * taker_fee

For XBTUSD the taker fee is 0.075%.

Code

from liquidation import Liquidation
liq = Liquidation()
# Buy 1000 contracts at $10,0000 with 10x leverage
liq.calc_buy(10000, 1000, 10, 0.000375)
# Sell 1000 contracts at $10,0000 with 10x leverage
liq.calc_sell(10000, 1000, 10, 0.000375)