Minimum Tick Size in a Futures Contract

The minimum tick size in a futures contract is the smallest allowable price increment — the smallest amount by which a futures price can change. On an S&P 500 E-mini futures contract, a tick is 0.25 index points. Understanding the tick and converting it to dollars is essential because profit and loss are always measured in tick increments.

What Is a Tick?

A tick is one minimum price movement in a futures contract. It is the granularity of price quoting and trading. Just as a stock might move in pennies ($ 0.01), a futures contract moves in ticks. The size of a tick depends on the contract.

Examples:

• S&P 500 E-mini (ES): 0.25 index points
• Crude oil (CL): 0.01 dollars per barrel
• Euro/U.S. dollar (EUR/USD) futures: 0.0001 (one basis point)
• 30-year U.S. Treasury bond (ZB): 1/32 of a point (0.03125)
• Japanese yen (JY): 0.000001 (one one-millionth)

The tick is set by the exchange or contract specification and is not negotiable. You cannot buy or sell at a price between ticks. If crude oil is trading at $75.43 and the tick is $0.01, the next quote up must be $75.44; you cannot place an order at $75.435.

Tick Value: Converting Ticks to Dollars

The tick alone does not tell you the profit or loss in dollars. For that, you multiply the tick by the contract multiplier — the size of the underlying exposure each contract represents.

Tick Value = Tick Size × Contract Multiplier

Worked Examples

S&P 500 E-mini (ES)

• Tick size: 0.25 index points
• Contract multiplier: $50 per index point
• Tick value: 0.25 × $50 = $12.50 per tick

If you are long one ES contract and it moves up by one tick (0.25 points), you make $12.50. If it moves up 10 ticks (2.5 points), you make $125.

Crude Oil (CL)

• Tick size: $0.01 per barrel
• Contract multiplier: 1,000 barrels
• Tick value: $0.01 × 1,000 = $10 per tick

One tick of profit on one crude oil contract = $10. If crude moves from $75.50 to $75.85 (a move of 35 ticks), your profit is 35 × $10 = $350.

Euro/U.S. Dollar Futures (6E on CME)

• Tick size: 0.0001 (0.01 cents)
• Contract multiplier: 125,000 euros
• Tick value: 0.0001 × 125,000 = $12.50 per tick

One tick move on 6E = $12.50 profit or loss.

U.S. Treasury 30-Year Bond (ZB)

• Tick size: 1/32 of a point (each point is 1% of par, or $1,000 per contract)
• Contract multiplier: $100,000 face value
• Tick value: (1/32) × $1,000 = $31.25 per tick

(In practice, Treasury bond futures also allow sub-tick trading in halves of the minimum tick, but the minimum tick itself has this value.)

Why Tick Size Matters

Profit granularity: The minimum dollar profit you can make on a single contract is one tick value. On crude oil, $10 is the smallest win. On ES, it is $12.50. Traders who scalp (hold for very short periods) may aim for 1–3 tick profits; that is their only viable profit target given transaction costs.

Bid-ask spreads: The bid-ask spread is quoted in ticks. A typical spread on ES might be 1–2 ticks; on crude oil, 1 tick. The bid-ask spread in dollars is the spread size (ticks) × tick value. A 1-tick spread on crude oil = $10 cost to entry; a 2-tick spread = $20.

Transaction costs: Every round trip (buy and sell, or sell and buy) costs the bid-ask spread plus commissions. If you make a 5-tick profit but the spread is 2 ticks, your net profit is only 3 ticks. This is why retail traders struggle: small tick values mean small spreads, but also mean small profits, and one bad trade wipes out many good ones.

Price precision and volatility: Contracts with very small tick sizes (like FX futures at 0.0001) appear to move in many increments; those with larger ticks (like Treasury bonds at 1/32) move in fewer visual increments. But the economic size of a tick should reflect the contract’s typical volatility and the trader’s time horizon. A tick that is too large forces traders to accept worst execution (their order is filled at a worse price because they cannot get the exact tick they want); a tick that is too small increases trading costs and does not add useful precision.

Tick Size and Market Structure

Exchanges set tick size to balance:

• Liquidity: Smaller ticks allow more price discovery and tighter spreads, but can encourage high-frequency trading that destabilizes smaller players.
• Participation: Larger ticks make the spread easier to justify to retail traders, but may widen inefficiently.
• Notional size: Contracts with large multipliers (like Treasury bonds at $100,000) have larger dollar ticks to keep bid-ask spreads in reasonable dollars; FX contracts have tiny ticks because the notional size is enormous.

In 2010, the U.S. SEC experimented with tick-size changes for certain stocks. The research found that smaller ticks increased trading volume but narrowed spreads did not always improve execution for retail investors. The relationship is complex.

Sub-Tick Trading and Fractional Shares

Modern electronic markets sometimes allow trades between the minimum tick. This is common in equities (fractional shares) and some Treasury futures (which allow trades in 1/64 or finer). However, the listed minimum tick is still the standard for quotes and order placement. Sub-tick trading is usually a feature for block trades or negotiated sales, not for routine orders.

See also