Calculation of Expiry Futures Contracts' Profit and Loss

·

Understanding how profit and loss (PnL) are calculated in expiry futures contracts is essential for traders navigating the volatile world of digital assets. Whether you're trading coin-margined or U-stablecoin-margined futures, accurate PnL calculations help assess performance, manage risk, and make informed trading decisions. This guide breaks down the core formulas, explains key terms, and walks through practical examples—ensuring clarity and precision.

Key Definitions in Futures Trading

Before diving into PnL calculations, it's important to define foundational concepts used across trading platforms.

Size

The "size" refers to the number of contracts or the crypto/fiat value held in a position. In One-way mode, long positions have a positive size, while short positions carry a negative value. In Hedge mode, both long and short positions are represented with positive sizes, allowing independent management of directional exposure.

Entry Price

Your entry price reflects the average cost basis of your position. Adding to an existing position or opening a reverse trade will adjust this value. After settlement, the entry price is replaced by the settlement price.

For U-stablecoin-margined contracts:

Entry Price = (Current Size × Entry Price + Added Size × Added Size's Entry Price) / (Current Size + Added Size)

For coin-margined contracts:

Entry Price = (Current Size + Added Size) / (Current Size / Entry Price + Added Size / Added Size's Entry Price)

All size values used in these formulas are treated as positive numbers.

👉 Discover how real-time PnL tracking enhances trading accuracy and speed.

Floating PnL: Measuring Unrealized Gains or Losses

Floating PnL (Profit and Loss) represents unrealized gains or losses based on current market conditions. It fluctuates with the mark price—the fair market value used to determine your position’s health.

For U-Stablecoin-Margined Contracts

For Coin-Margined Contracts

These inverse calculations account for pricing in the base currency (e.g., BTC), where changes in USD value affect BTC-denominated profits differently.

Example: Calculating Floating PnL

Suppose you hold a long BTC-USDT expiry futures position:

Floating PnL:
= 0.01 × 10 × 1 × (160,000 – 100,000)
= 6,000 USDT

This means your unrealized profit stands at $6,000.

Now consider a short BTC-USD coin-margined contract:

Floating PnL:
= 100 × 1,000 × 1 × (1/80,000 – 1/100,000)
= 0.25 BTC

You’ve unrealized a gain of 0.25 BTC due to the drop in price.

Floating PnL Ratio: Assessing Return on Margin

The Floating PnL Ratio shows how much return you're generating relative to the margin allocated to a position.

Formula:

(Floating PnL / Position's Margin) × 100%

Example:

You have a long BTC-USDT position with:

Ratio:
= (6,000 / 1,600) × 100% = 375%

A high ratio indicates strong performance but may also signal elevated risk if leverage is involved.

Closed PnL: Realizing Gains from Trade Exit

Closed PnL measures the profit or loss when a position is partially or fully closed. Unlike floating PnL, this is a realized figure based on the actual close price.

U-Stablecoin-Margined Contracts

Coin-Margined Contracts

This metric helps evaluate individual trade outcomes after execution.

Settlement PnL: Final Adjustment at Contract Expiry

At expiry, open positions are settled at the final settlement price. Settlement PnL captures the difference between your entry and settlement prices.

Formulas mirror Closed PnL but use the settlement price instead of close price. This adjustment finalizes your profit or loss before the contract terminates.

👉 See how automated settlement simplifies end-of-contract processing.

Realized PnL: Total Net Gain or Loss

Realized PnL combines all finalized profits and costs:

Realized PnL = Closed PnL + Settlement PnL + Trading Fees

Trading fees are typically deducted from your margin and reduce net gains. Always factor them in for accurate performance analysis.

The Realized PnL Ratio is calculated as:

(Realized PnL / Closed Position's Margin) × 100%

This percentage reveals efficiency—how much return was generated per unit of capital risked.

Frequently Asked Questions (FAQ)

Q: What’s the difference between floating and realized PnL?
A: Floating PnL reflects unrealized gains or losses while a position is open. Realized PnL is the actual profit or loss after closing or settling a position.

Q: Why do coin-margined contracts use inverse pricing formulas?
A: Because profits are denominated in the base cryptocurrency (like BTC), not USD. As the USD value changes, the BTC-equivalent gain/loss requires inverse math for accuracy.

Q: How does adding to a position affect my entry price?
A: It recalculates your average entry cost. For U-margined contracts, it's a weighted average of USDT prices. For coin-margined, it involves harmonic averaging due to inverse pricing.

Q: Can my Floating PnL Ratio exceed 100%?
A: Yes—especially with leverage. A ratio above 100% means your unrealized gain exceeds the margin used, but it also increases liquidation risk.

Q: Are trading fees included in Closed PnL?
A: No—fees are accounted for separately in Realized PnL. Always subtract fees to understand true profitability.

Q: What happens to my position if I don’t close before expiry?
A: It will be automatically settled at the final settlement price, and Settlement PnL will be realized.

Core Keywords for SEO

Understanding these metrics empowers traders to monitor performance, optimize strategies, and maintain control over risk exposure. With precise calculations and clear interpretation, you can navigate expiry futures with greater confidence.

👉 Access advanced tools that automate PnL tracking and improve trading precision.