Futures 101: what you actually need to know
Skip the textbook. A working trader's guide to contract specs, margin, and the mechanics that quietly control your P&L.
Futures mechanics matter more than most new traders realize. This primer covers contract specs, margin, tick value, and the little details that quietly move your equity curve.
Why mechanics matter before strategy
Most new traders spend months on strategy before they understand the mechanics of the instrument they're trading. This is backwards. Contract specs determine your dollar risk before any strategy question matters — and a strategy that looks good on ES can behave very differently on NQ or CL simply because the tick math is different.
“Master the mechanics before the strategy. The strategy sits on top of the tick math — not the other way around.”
The four numbers you must know
Before you trade any contract, learn these four numbers. They control your dollar risk, capital requirement, and the minimum move that matters.
- Tick size — the smallest price increment.
- Tick value — what that increment is worth in dollars.
- Initial margin — capital required to open the position.
- Maintenance margin — the level at which you get called.
| Contract | Tick size | Tick value | Initial margin |
|---|---|---|---|
| ES (E-mini S&P) | 0.25 | $12.50 | ~$13,200 |
| NQ (E-mini Nasdaq) | 0.25 | $5.00 | ~$17,600 |
| CL (Crude oil) | 0.01 | $10.00 | ~$6,600 |
| GC (Gold) | 0.10 | $10.00 | ~$11,000 |
Margin is a capital constraint, not a stop
Initial and maintenance margin control how much capital you tie up per contract — not how much you should risk. Conflating margin with risk is the single most common mistake new futures traders make. Size to your risk plan, not to your margin allowance.
A working example
A $50k account can technically hold three ES contracts on initial margin. That doesn't mean it should trade three. If your daily loss limit is $1,100 and your invalidation is 4 points, one contract is already $200 of risk. Three is $600 — half your daily budget on a single trade.
The mechanics that surprise new traders
Beyond the four core numbers, three mechanics reliably surprise traders in their first funded quarter.
- Session hours — overnight liquidity is a fraction of the day session on most contracts.
- Roll dates — front-month volume shifts to the next contract weeks before expiry.
- Settlement type — cash-settled vs. physical delivery changes your last-day mechanics.
“Strategy is what you overlay. Mechanics are what you're trading.”
Master those four numbers on any contract before you trade it. Everything else — strategy, timing, tape reading — sits on top of that foundation.
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