Glossary term
Tick
A tick is the minimum price increment by which a security, futures contract, or other traded instrument can move or be quoted.
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What Is a Tick?
A tick is the minimum price increment by which a security, futures contract, or other traded instrument can move or be quoted. If a stock has a tick size of $0.01, quotes generally move in one-cent increments. If a futures contract has a defined tick size, each tick has a contract-specific dollar value.
The word tick can also be used informally to describe a single price change or transaction movement, but the precise meaning is the minimum allowed increment for price quoting or trading.
Key Takeaways
- A tick is the minimum price increment for a traded instrument.
- Tick size affects spreads, liquidity, execution quality, and market competition.
- Stocks, options, futures, and other products can have different tick-size rules.
- A smaller tick can allow tighter quotes, while a larger tick can change incentives for liquidity providers.
- Tick value matters in futures because each tick can correspond to a specific dollar gain or loss.
How Tick Size Works
Tick size sets the smallest price step allowed in a market. A stock quoted at $25.10 may move to $25.11 if the tick size is one cent. It generally cannot be quoted at $25.105 if the market's minimum increment does not allow subpenny quoting for that security.
In futures, the exchange contract specifications define both tick size and tick value. For example, a contract might move in increments of 0.25 points, with each tick worth a fixed dollar amount. That makes tick value central to position sizing and risk management.
Why Ticks Matter
Tick size affects the bid-ask spread. If the minimum increment is too large relative to the natural spread, quotes may be wider than they need to be. If the increment is very small, liquidity providers may face more quote competition but less displayed depth at each price level.
That is why regulators and exchanges pay attention to tick sizes. Minimum increments are part of market structure, not a trivial display setting. They influence execution quality, order routing, and the economics of providing liquidity.
Examples
Market | How tick size matters |
|---|---|
Stocks | Minimum quote increments affect spreads and price improvement. |
Futures | Each tick can equal a defined dollar value per contract. |
Options | Minimum increments may vary by option price and product rules. |
Bonds | Prices may use market-specific conventions rather than stock-style pennies. |
Tick Versus Point
A point is a broader price unit. A tick is the smallest allowed movement within the pricing convention. In a futures contract, one point may contain several ticks. A trader who says a contract moved four ticks is describing a smaller and more precise movement than one full point if the contract has multiple ticks per point.
Trading and Risk Context
Traders use tick size to estimate slippage, stops, profit targets, and order placement. A stop that is only one tick away may be too tight for a volatile instrument. A strategy that depends on capturing one or two ticks must have excellent execution and very low costs.
Tick value also determines leverage. A small quoted move can produce a meaningful dollar gain or loss when a futures contract has a large multiplier or when the trader holds many contracts.
Execution Context
Tick size is part of trading market design. A smaller tick can allow tighter quoted spreads, but it may reduce the incentive to display size at the best bid or offer. A larger tick can make displayed quotes more durable, but it can also force buyers and sellers to step over a wider minimum increment. Traders evaluate tick rules alongside volume, depth, volatility, order type, and transaction costs.
The Bottom Line
A tick is the smallest price increment allowed for a traded instrument. It matters because tick size shapes spreads, execution, liquidity, and risk, while tick value determines how much a small price move is worth in contracts such as futures.