What Is One Lot? Units for Stocks, Forex, Futures and CFDs

“One lot” sounds like a universal trading unit, but it does not mean the same thing in every market. It may refer to a fixed group of shares, a forex contract size, one futures contract or a quantity unit in trading software. Like a case of drinks, whose bottle count may differ by product, seeing “one lot” does not tell you how much of an asset you bought, how much capital is required or how much profit and loss you may face. Check the product's contract specifications before placing an order.

Stocks: A Lot May or May Not Be a Fixed Number of Shares

A stock-market lot usually means a standard trading unit set by the exchange, but the number of shares per lot varies by market. Some markets also distinguish board lots from odd lots. For example, a lot may commonly contain 100 shares in one market and a different number in another; platforms that support fractional shares may allow trading by share or cash amount. New listings, special securities and rule changes can also create differences.

If one lot is 100 shares and the stock trades at 20 yuan per share, the notional value of one lot is 2,000 yuan, before commissions, taxes and platform charges. The lot answers only “how many?” It does not say whether financing is involved or mean that one lot is the minimum-risk unit. Check the exchange or broker product page for shares per lot, minimum order size, odd-lot rules and fees.

Forex: Standard, Mini and Micro Lots

In forex trading, a “lot” commonly describes the contract quantity for a currency pair. A common retail convention is 100,000 units of the base currency for a standard lot, 10,000 for a mini lot and 1,000 for a micro lot; actual definitions and minimum order sizes depend on the platform's specifications. For example, one standard lot of EUR/USD usually represents a notional amount of 100,000 euros—not 100,000 US dollars or “one share.”

Forex profit and loss also depends on the quote currency, exchange rate and pip value. The number of lots affects the cash value of each pip, but conversion is also needed when the account currency differs from the quote currency. Do not assess risk from “0.1 lot” alone. Use the platform's contract calculator with the pair, account currency and lot size to check estimated profit and loss over a given price movement.

Futures: One Lot Usually Means One Standardised Contract

In futures trading, one lot usually corresponds to one contract. The contract specifies the underlying quantity, quote unit, minimum tick, value per tick, delivery month and settlement method. One lot of a commodity future may represent a fixed quantity of the commodity; for an index future, profit and loss is often based on the index-point movement multiplied by the contract multiplier. The multiplier can differ even when the index level is the same, so the risk represented by “one lot” can vary widely.

Futures profit and loss can often be estimated initially as “price change × contract multiplier × number of contracts,” but confirm the quote unit, currency and multiplier. For example, if a contract is worth 10 yuan per point, a 3-point move with 2 contracts corresponds to a theoretical profit or loss of about 60 yuan before fees and slippage. Futures margin is not the full contract value; positions near expiry may also require closure, rolling or delivery.

Index CFDs: Focus on Cash Value per Point and Quantity

An index CFD generally does not describe its economic exposure using a stock-style fixed number of shares per “lot.” A platform may show 1 lot, 1 contract or several units and specify a cash value per point. For example, a quantity of 2 units at 5 yuan per point corresponds to theoretical profit or loss of about 100 yuan for a 10-point index move (a loss if the direction is adverse), before costs and quote differences. Unit definitions may differ across providers for the same index, so do not compare lot counts by product name alone.

Also note that cash index CFDs and futures-based CFDs may have different pricing and expiry arrangements. Index constituents, trading hours, overnight adjustments and dividend treatment can affect holding costs or quotes.

Crypto: Coin Amount, Contract Count and Notional Value

Spot crypto orders may be placed by coin quantity or fractions of a coin, such as 0.01 coin. Derivatives may be measured in contract count, coin-denominated quantity or stablecoin notional value. Some contracts represent a fixed coin quantity per contract; others settle at a fixed face value such as one US dollar. Perpetual and dated contracts also differ. Therefore, “buying 100 contracts” does not necessarily mean buying 100 coins. Check face value, minimum quantity, quote currency, profit-and-loss settlement currency, funding rate and isolated or cross-margin mode.

How Do You Assess the Actual Risk of One Lot?

Before placing an order, check the following in sequence so that you do not mistake “lot size” for risk:

1. Confirm the underlying quantity or contract face value represented by one unit and the permitted minimum price movement.
2. Find the profit or loss for one unit when the price moves one point, one tick or 1%.
3. Multiply by the planned order quantity and convert to the account currency; do not omit currency conversion.
4. Then include spreads, commissions, financing or borrow fees, funding rates and possible roll costs.
5. Confirm whether the product is spot, leveraged spot, futures, a CFD or another derivative; similar display names do not guarantee the same rights or obligations.

“One lot” is a quantity label, not a universal value unit or risk unit. When comparing trade sizes, focus on notional exposure, profit and loss per point, and potential losses rather than the displayed lot count alone. Use the latest specifications from the exchange or provider. This article provides general information and is not investment advice.