Specifications

Tick sizes: BTC $0.25, ETH $0.01, USDT $0.0001, EOS $0.00025, XRP $0.001, BNB $0.0025, TRX $0.0000025, LEO $0.001, BCH $0.05

Contract sizes: 0.001 BTC, 0.01ETH, 1USDT, 1EOS, 1XRP, 1BNB, 1TRX, 1LEO, 0.01BCH

Contract multiplier: 1000 for BTC, 100 for ETH, 1 for USDT, 1 for EOS, 1 for XRP, 1 for BNB, 1 for TRX, 1 for LEO, 100 for BCH

Contract notional: 1 coin

IMF Factor:

0.002 for BTC,

0.0004 for ETH,

0.00001 for USDT,

0.0001 for EOS,

0.00002 for XRP

0.0005 for BNB,

0.00001 for TRX,

0.0002 for LEO,

0.0008 for BCH,

0.0008 for ALT,

0.001 for MID,

0.002 for SHIT,

0.0003 for HT,

0.0003 for OKB,

0.0002 for ALGO,

0.001 for BSV,

0.0004 for LTC.

Accounts

Position size: contracts * contract multiplier

Position notional: size * MP

IMF Factor: multiplier on the margin required for a coin.

Base IMF: the minimum initial margin fraction needed.  Currently 0.1.

Position initial margin fraction: max(Base IMF, IMF factor * sqrt(open size))

Position maintenance margin fraction: max(3%, 0.6 * position initial margin fraction)

Position unrealized PNL: position size * (future mark price - position entry price)

Collateral: USD balance in futures wallet plus 0.95 times BTC and USDT balance marked to latest index price.

Free collateral: amount of USD that can be withdrawn from exchange, =min(collateral, collateral + unrealized PNL) - [amount of collateral tied up in open orders]

Total account value: collateral + unrealized pnl

Total position notional: sum of abs(position notional) across all positions

Margin fraction [MF]: total account value / total position notional

Maintenance Margin Fraction Requirement [MMF]: the minimum MF needed to avoid getting liquidated, equal to average of position MMF weighed by position notional

Auto Close Margin Fraction [ACMF]: the minimum MF needed to avoid getting closed against the backstop liquidity provider or other users, = max(MMF / 2, MMF - 0.06 * MM)

Zero Price (ZP): MP * (1 - MF) if long, MP * (1 + MF) if short.  The mark price that would set an account’s total account value to 0.

Liquidation Distance: % move in futures that would make MF = MMF.

Position open size: Max(abs(size if all buy orders get filled), abs(size if all sell orders get filled))

Position open notional: position open size * MP

Total open position notional: sum of abs(position open notional) across all positions

Open margin fraction [OMF]: min(total account value, collateral) / total open position notional

Initial Margin Fraction Requirement [IMF]: the minimum OMF needed to increase position size, equal to average of position IMF for all account positions weighed by position open notional

Unused collateral: max(OMF - IMF, 0) * total open position notional

Backstop Liquidity Provider [BLP]: an account that promises to take on liquidating accounts’ positions

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