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Tick Size and Tick Value: The Foundation of Position Sizing

When you trade a futures contract, every price move costs you or makes you money—but the dollar amount depends entirely on a single number: tick value. Misunderstand it, and you'll either oversized your trades or hold positions that move barely enough to cover commissions. Both mistakes end accounts.

This article shows you exactly what tick size and tick value are, how they differ, and how to use them to calculate real risk and size your positions correctly. This is foundational work—especially for prop traders operating under drawdown limits.

What Is a Tick?

A tick is the minimum price increment a futures contract can move. A point is a full number move in price, while one tick is a fractional move—part of a point.

Different contracts have different tick sizes. For example, the tick size of an E-Mini S&P 500 Futures Contract is equal to one quarter of an index point. That means to move 1 full point, the ES must move 4 ticks.

For a Micro E-mini S&P 500 (/MES), the same structure applies: the tick increments of the Micro E-mini S&P 500 are quoted in a quarter of one point, so a one tick move in the Micro E-mini S&P 500 equates to $1.25.

Tick size is set by the CME exchange and doesn't change. What changes is what that tick is worth in dollars.

Tick Value: Converting Ticks to Dollars

The futures tick value is the dollar amount your P&L changes for each minimum price movement. This is the number that connects price movement on your chart to actual dollars in your account.

Here are the real numbers for commonly traded contracts:

  • ES (E-mini S&P 500): $50 per point / 4 ticks per point = $12.50 per tick

  • MES (Micro E-mini S&P 500): tick value is $1.25 per contract

  • NQ (E-mini Nasdaq-100): tick size is 0.25 index point and its tick value is $5.00 per contract

  • Gold (/GC): the tick size is $0.10 in price and the tick value is $10.00

The difference is dramatic. If you're trading MES at $1.25/tick, and you risk 8 ticks per trade, that's a $10 risk on a $1,000 account—just 1% of your account. Now imagine the same setup on ES at $12.50/tick. That's $100 per trade, or 10% of your account—too risky for most beginners.

Tick Value Comparison: Major Futures Contracts

Intraday Margin vs. Initial Margin

Tick value affects your P&L, but tick size also affects how much margin you need to hold a position. This matters for two different trading scenarios:

Day trade margins are the amount of capital required to open and hold a position during the same trading session without carrying the position into the next session. These margins are typically lower because the position is not exposed to overnight market events.

Initial margin is the full exchange-required performance bond needed to open a position outside of day trading hours. Initial margin is set by the exchange and is significantly higher than intraday margin.

For example, on Tradovate:

  • ES intraday: $500 per contract

  • ES overnight: the overnight requirement exceeds $25,000 per contract

  • MES intraday: typically under $100 per contract

When traders ask about the futures trading minimum deposit, they often look only at intraday margin. A trader funding only the intraday margin for ES or NQ faces greater exposure. The practical minimum deposit must consider factors like intraday margin, potential overnight exposure, stop loss size, volatility, and consecutive losses.

Position Sizing Using Tick Value and Risk Percentage

A common rule of thumb in trading is to risk no more than 1-2% of your trading capital on a single trade. This helps protect your account from significant drawdowns and ensures that you can survive losing streaks.

Here's the math:

Your account: $10,000
Your risk per trade: 1% = $100
Contract: ES, tick value $12.50
Stop loss: 8 ticks

Calculation:

  • 8 ticks × $12.50 = $100 per contract
  • At 1% risk, you can trade 1 ES contract

Now switch to MES:

Contract: MES, tick value $1.25
Stop loss: 8 ticks
Calculation:

  • 8 ticks × $1.25 = $10 per contract
  • At 1% risk ($100), you can trade 10 MES contracts

Both use the same $100 at risk. One limits you to 1 contract; the other lets you trade 10. Tick value directly determines your flexibility.

Why This Matters for Prop Traders

Knowing tick values isn't academic. It directly feeds into your risk management at prop firms. If your stop loss is 8 ticks on ES and you're trading 2 contracts, you're risking 8 x $12.50 x 2 = $200 on that trade.

At a 25K prop evaluation with a typical 2,500 drawdown limit, that's 12 losing trades at $200 each. Understand your tick value, and you understand how close you are to the drawdown limit on each trade.

On a $25,000 evaluation, trading MES means each tick is $1.25. You'd need to give back 2,000 ticks to hit a typical $2,500 drawdown limit. On standard ES, that's only 200 ticks, about a 50-point move. Big difference in breathing room.

Common Pitfall: Confusing Tick Size and Tick Value

Many beginners look at tick size (0.25, 0.10) and assume smaller tick sizes mean smaller moves or less risk. Wrong.

High tick values can cause large, rapid swings in a trade's profit or loss. Some traders prefer micro futures because the smaller tick sizes make profit and loss swings smaller.

Tick value is what matters. A 20-tick move on ES ($12.50/tick) is $250. A 20-tick move on MES ($1.25/tick) is $25. Same ticks, vastly different dollars.

Checking Tick Values

If you're unsure about the tick value of a futures contract, the CME Group Product Slate lists contract specs, and most trading software displays tick size and value in the DOM or contract info.

Before you trade any contract, pull the spec sheet. Write down the tick value. Calculate your risk per trade. Then decide position size. That's the order.

Disclaimer: PropLedger is a trade-journaling tool, not financial advice. Prop firm rules change frequently - always confirm the current rules with your firm. Trading futures involves substantial risk of loss.

Sources

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Statistics are calculated from your personal trade history only. Past performance does not predict future results. PropLedger does not provide financial advice, signals, or performance guarantees.
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