Before opening a position, traders should ensure that they have a minimum amount of funds in their wallet balance. The cost required to open a position includes the initial margin and open losses (if any). Open losses occur when the price of a futures contract goes unfavorably (i.e., mark price is lower than the order price for a long order). OrangeX includes open losses as one of the costs required to open a position to avoid forced liquidation when traders place an order. If the open loss is not included as one of the costs required to open a position, there is a high probability that users’ positions will get liquidated immediately once they have placed such orders.
The formula to calculate the cost required to open a position is as such:
Cost = Initial Margin + Open Loss (if any)
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Cost required to open a Limit or Stop order
Step 1: Calculate the Initial Margin
For example,
Initial Margin
= Notional Value / Leverage
= (9,253.30 x 1 BTC) / 20
= 462.66
Step 2: Calculate Open Loss
Open Loss
= Number of Contract x Absolute Value {min[0, direction of order x (mark price - order price)]}
direction of order: 1 for long order；-1 for short order
(i) Open loss of long order
= Number of Contract x Absolute Value {min[0, direction of order x (mark price - order price)]}
= 1 x Absolute Value {min[0, 1 x (9,259.84 - 9,253.30)]}
= 1 x Absolute Value {min[0, 6.54]}
= 1 x 0
= 0
There is no open loss when the user opens a long order.
(ii) Open loss of short order
= Number of Contract x Absolute Value {min[0, direction of order x (mark price - order price)]}
= 1 x Absolute Value {min[0, -1 x (9,259.84 - 9,253.30)]}
= 1 x Absolute Value {min[0, -6.54]}
= 1 x 6.54
= 6.54
There is an open loss when the user opens a short order.
Step 3: Calculate the cost required to open a position
Since the long order has no open loss, thus the cost required to open a long position is equivalent to the initial margin.
(i) Cost required to open a long position
= 462.66 + 0
= 462.66
Short order has an open loss, thus the cost required to open a short position is higher as we need to take open loss into consideration besides the initial margin.
(ii) Cost required to open a short position
= 462.66 + 6.54
= 469.20 (rounding difference)
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Cost required to open a Market order
Step 1: Calculate assuming price
Long order, assuming price = ask[0] x (1 + 0.05%) , Open order: assuming price = max(bid[0], mark price)
(i) Assuming price of long order
= ask[0] x (1 + 0.05%)
=10461.77 x (1 + 0.05%)
= 10467.0009
(ii) Assuming price of short order
= max(bid[0], mark price)
= max (10461.78, 10461.78)
= 10461.78
*[0]：Level 1 price
Step 2: Calculate the Initial Margin
Initial Margin = Notional Value / Leverage
(i) Initial margin of long order
= Assuming price of long order x Number of Contract / Leverage
= 10467.0009 x 0.2 / 20
= 104.670009
(ii) Initial margin of short order
= Assuming price of short order x Number of Contract / Leverage
= 10461.78 x 0.2 / 20
= 104.6178
Step 3: Calculate Open Loss
Open Loss
= Number of Contract x Absolute Value {min[0, direction of order x (mark price - order price)]}
direction of order: 1 for long order；-1 for short order
(i) Open loss of long order
= Number of Contract x Absolute Value {min[0, direction of order x (mark price - order price)]}
= 0.2 x Absolute Value {min[0, 1 x (10461.78 - 10467.0009)]}
= 0.2 x Absolute Value {min[0, -5.2309]}
= 0.2 x 5.2309
= 1.04418
There is an open loss when the user opens a long order.
(ii) Open loss of short order
= Number of Contract * Absolute Value {min[0, direction of order * (mark price - order price)]}
= 0.2 * Absolute Value {min[0, -1 * (10461.78 - 10461.78)]}
= 0.2 * Absolute Value {min[0, 0]}
= 0.2 * 0
= 0
There is no open loss when the user opens a short order.
Step 4: Calculate the cost required to open a position
Long order has an open loss, thus the cost required to open a long position is higher as we need to take open loss into consideration besides the initial margin.
(i) Cost Required to Open a Long Position
= 104.670109 + 1.04418
= 105.71 (rounding difference)
Since the short order has no open loss, thus the cost required to open a short position is equivalent to the initial margin.
(ii) Cost Required to Open a Short Position
= 104.6178 + 0
= 104.61 (rounding difference)
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