Introduction of Spot
1. Spot Trading
Spot trading is the exchange of a cryptocurrency for another cryptocurrency. With the ETH/BTC pair, ETH is the base currency and BTC is the quote currency, which means BTC is needed to buy ETH. OKX spot trading currently has four subsections that allow users to trade using USDT, USDC, Stablecoins, and other Crypto as the quote currency.
2. Spot Cost Price
OKX will launch the Spot Cost Price feature on August 29, 2024, including two calculation methods: Average Cost Price and Cumulative Cost Price.
2.1 Cost price overview
Average Cost Price | Cumulative Cost Price | |
Definition | Average cost price is the average price at which you buy spot | Cumulative cost price is the cumulative price at which you buy and sell spot |
Cost Price | (Average cost price before last buy × Amount + Price of last buy × Amount) / Net buying amount | (Cumulative buying value – Cumulative selling value) / Net buying amount |
PnL | (Last price – Cost price) × Net buying amount | Net buying amount × Last price – Cumulative buying value + Cumulative selling value |
PnL Ratio | (Last price – Cost price) / Cost price | PnL / (Cumulative buying value – Cumulative selling value) |
Recommended Use Case | Primarily used to assist in trading decisions, determining when to buy and sell | Primarily used to assist in trading decisions, determining when to sell |
2.2 Calculation Examples
You can understand the corresponding calculation formulas through the following examples:
Scenario 1: Assume you did not hold any ETH before. On Day 1, you purchase 2 ETH at a price of 3000, and the last price is 3500.
Average cost price
Average cost price = (0 + 3000 * 2) / 2 = 3000
PnL = (3500-3000)*2 = 1000
PnL Ratio = (3500 - 3000)/3000 * 100% = 16.67%
Cumulative Cost Price
Cumulative Cost Price = (3000 * 2 - 0)/2 = 3000
PnL = 3500 * 2 - 3000 * 2 + 0 = 1000
PnL Ratio = 1000 / (3000 * 2 - 0) * 100% = 16.67%
Scenario 2: On Day 2, you sell 1 ETH at a price of 3500, and the last price is now 4000.
Average cost price
Average cost price = 3000
PnL = (4000-3000)*1 = 1000
PnL Ratio = (4000 - 3000)/3000 * 100% = 33.3%
Cumulative Cost Price
Cumulative Cost Price = (2*3000 - 1*3500)/1 = 2500
PnL = 4000*1 - 2*3000 + 1*3500 = 1500
PnL Ratio = 1500 / (2*3000 - 1*3500) * 100% = 60%
Scenario 3:On Day 3, you buy 1 more ETH at a price of 4000, and the last price is now 4500.
Average cost price
Average cost price = ( 3000*1 + 4000*1 ) / 2 = 3500
PnL = (4500 - 3500) * 2 = 2000
PnL Ratio = (4500 - 3500)/3500 * 100% = 28.6%
Cumulative Cost Price
Cumulative Cost Price = ( 3000*2 + 4000*1 - 3500*1 ) / 2 = 3250
PnL = 2*4500 - (2*3000+1*4000) + 1*3500 = 2500
PnL Ratio = 2500 / (2*3000+1*4000 - 1*3500 ) * 100% = 38.5%
2.3 Important Notes
A feature for adjusting cost prices, allowing the inclusion of previously excluded amounts in calculations, will be introduced in the future.
Only spot buy/sell and quantities transferred to the trading account through trading bots will be included in the calculation.
Stablecoins and fiat currencies are not included in the cost price calculation.
2.4 Open API data fields
Average Cost Price | Cumulative Cost Price | |
Cost Price | openAvgPx | accAvgPx |
PnL | spotUpl | totalPnl |
PnL Ratio | spotUplRatio | totalPnlRatio |
Net buying amount | spotBal | spotBal |