calculate_amount

Calculates the amount withouth tax and commission.

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_amount(12.0, 2)
24.0

calculate_amount_with_tax

Calculates the amount (buy/sell) with tax included, but not the commission.

Note

profit_loss = S.P + S.P.T (buy)

profit_loss = S.P - S.P.T (sell)

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_amount_with_tax(12.0, 2, 3.0, :buy)
23.28
iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_amount_with_tax(12.0, 2, 3.0, :sell)
24.72

calculate_amount_with_tax_and_commission

Calculates the amount with tax and commission.

Note

AMT = S.P + S.P.T + C (buy)

AMT = S.P - S.P.T - C (sell)

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_amount_with_tax_and_commission(12.0, 2, 3.0, 1.0, :buy)
97.0
iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_amount_with_tax_and_commission(12.0, 2, 3.0, 1.0, :sell)
-49.0

calculate_price

Calculates the price when buying or selling.

Examples

iex> Float.round(LibCalculatorFinance.Trading.BeforeTrade.calculate_price(24.0, 2, 3.0, 1.0, :buy), 6)
11.165049
iex> Float.round(LibCalculatorFinance.Trading.BeforeTrade.calculate_price(24.0, 2, 3.0, 1.0, :sell), 6)
12.886598

calculate_risk_initial

Calculates the initial risk. This is the risk we will take if our stoploss is reached. This should be equal to the risk_input if everything was correctly calculated.

Long

S.Pb + S.Pb.T + C - (S.Psl - S.Psl.T - C)

Short

S.Ps + S.Psl.T + C - (S.Ps - S.Ps.T - C)

Examples

iex> Float.round(LibCalculatorFinance.Trading.BeforeTrade.calculate_risk_initial(12.0, 2, 3.0, 1.0, 10.0, true), 6)
7.320000
iex> Float.round(LibCalculatorFinance.Trading.BeforeTrade.calculate_risk_initial(12.0, 2, 3.0, 1.0, 10.0, false), 6)
-0.680000

calculate_risk_input

Calculates the risk based on total pool and input. Consider this the theoretical risk we want to take.

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_risk_input(10000.00, 2.0)
200.0

calculate_shares_recommended

Calculates the recommended amount of shares you can buy.

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_shares_recommended(10000.00, 1.0, 3.0, 12.0)
808

calculate_stoploss

Calculates the stoploss.

Long

amount selling at stoploss - amount at buying = initial risk of pool

(S.Psl + S.Psl.T + C) - (S.Pb - S.Pb.T - C) = R/100 * pool

Short

amount selling - amount buying at stoploss = initial risk of pool

(S.Ps + S.Ps.T + C) - (S.Psl - S.Psl.T - C) = R/100 * pool

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_stoploss(12.0, 2, 3.0, 1.0, 2.0, 10000.0, true)
109.00492610837439
iex> LibCalculatorFinance.Trading.BeforeTrade.calculate_stoploss(12.0, 2, 3.0, 1.0, 2.0, 10000.0, false)
-87.95939086294416

cost_tax

Cost of tax (buy and sell).

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.cost_tax(25.75, 1.0, 2, 12.0, :buy)
0.75
iex> LibCalculatorFinance.Trading.BeforeTrade.cost_tax(22.25, 1.0, 2, 12.0, :sell)
0.75

cost_transaction

Cost of transaction (tax and commission).

Examples

iex> LibCalculatorFinance.Trading.BeforeTrade.cost_transaction(12.0, 2, 3.0, 1.0)
1.72