Liquidation

OT uses Mark Price(Oracle price) as benchmark for liquidation and profit calculation.

A position is liquidated when its margin rate is equal to maintenance margin rate.

(IMR)Initial Margin Rate = 1/leverage * 100%

Margin rate = (Margin + PnL ± fundingFee) / Position notional value

= (Margin + PnL ± fundingFee) / (Position size(coin) * mark price)

(MMR)Maintenance Margin Rate = if (IMR/2 > allowMaxMmr) {allowMaxMmr}

if(IMR/2 < allowMinMmr,){allowMinMmr}

else {IMR/2}

IMR and MMR are recalculated when extra margin is added or removed from a position.

Index token	allowMaxMmr	allowMinMmr
BTC	1.3%	0.8%
ETH	1.3%	0.9%
USDT	0.9%	0.5%
Cheems	6%	3%
MAV(Maverick Protocol)	2%	1.5%
VELA	2%	1.5%
ARKM	2%	1.5%
OT	2%	1.5%
BNB	1.6%	1.2%
Matic	3%	1.5%
Arbi	1.6%	1.2%
ZKS	1.5%	0.9%
Doge	2%	1.2%
APT	1.9%	1.2%
Sui	1.8%	1.2%
USDC	1%	0.5%
USDT	1%	0.5%