← Back to Blog · 2026-10-07 · 6 min read · Trading Education

You've sized US futures for years. You know ES is $50 a point, you know one crude contract moves $10 per tick, and you can calculate risk-per-trade in your sleep. Then you open a Chinese commodity futures account, pull up rebar, and everything you know quietly stops working.

Here's the trap: you decide to risk 1% of a $20,000 account — $200 per trade. You check the rebar chart, set a stop 40 points away, and buy. What you may not have checked is that one rebar contract controls 10 metric tons, and a 1 yuan/ton move equals 10 yuan of P&L. Your 40-point stop isn't a small scalp. Depending on price levels and margin, it's a chunk of your account — and the granularity of your risk is now dictated by the exchange's contract design, not by your risk model.

This article is about the single biggest mechanical difference between trading Chinese commodity futures and US futures: contract multipliers. Get this wrong and no amount of chart skill saves you. Get it right, and the Chinese market — the largest commodity futures market in the world by volume — becomes genuinely tradeable.

What Contract Multipliers Actually Do (And Why the US Doesn't Prepare You)

Every futures contract has a multiplier: the number of units of the underlying you control per contract. In the US, the multiplier logic is baked into contracts you already know:

• ES (CME): $50 × the S&P 500 index. One point = $50.
• MES: $5 × the index — the micro version gives you 1/10th granularity.
• CL (NYMEX): 1,000 barrels. A $0.01 tick = $10.
• GC (COMEX): 100 troy ounces.

The US market solved the granularity problem years ago with micro contracts. Want 1/10th the risk of an ES? Trade MES. Want tiny gold exposure? There are micro gold contracts. The ladder of contract sizes is fine-grained, so position sizing feels continuous.

China's exchanges — SHFE (Shanghai), DCE (Dalian), ZCE (Zhengzhou), and CFFEX (financials) — mostly don't work that way. Contract sizes were set for domestic industrial hedgers, not for a global retail trader doing risk math in dollars. The result: multipliers that create lumpy, sometimes awkward risk units.

The Real Numbers: Core Chinese Commodity Futures Specs

These are the specs you need burned into memory before sizing anything. (Always verify current specs with the exchange and your broker — exchanges do adjust tick sizes and limits periodically.)

Now look at the notional values, because this is where it gets interesting. Rebar trading around, say, 3,500–4,000 yuan/ton means one lot controls roughly 35,000–40,000 yuan (~$5,000–5,500) of steel. Iron ore around 800 yuan/ton means one lot controls roughly 80,000 yuan (~$11,000). Copper, at several tens of thousands of yuan per ton times 5 tons, can mean one lot controls the equivalent of tens of thousands of dollars.

Notice the non-linearity. In the US, moving from ES to MES scales risk down 10x cleanly. In China, moving from rebar to iron ore doesn't just change the product — it changes your notional per lot by roughly 2x, your tick value by roughly 5x, and your volatility profile entirely. There is no "micro iron ore." The contract is the contract.

Three Ways Multipliers Break Naive Position Sizing

1. Minimum risk units are chunky

On a small account, the smallest possible position in some contracts can represent more risk than your model allows. If your stop on iron ore is 15 yuan/ton, that's 1,500 yuan (~$210) per lot — before slippage and fees. On a $10,000 account, one lot at that stop is already over 2% risk. You can't size down. Your only lever is the stop distance or skipping the trade. US traders used to fractionalizing with micros find this genuinely restrictive.

2. Margin and leverage don't map to what you're used to

Chinese exchanges set minimum margin rates that often sit in the roughly 8–15% range, and brokers add a buffer on top. That means nominal leverage of roughly 7–12x on notional — higher than many US retail futures accounts are used to effective-wise. Combine that with chunky multipliers and the distance between "comfortable position" and "overleveraged position" is one lot wide. There's no half lot. Your position ladder is integers, and each rung is tall.

3. Daily price limits change your worst-case math

Chinese exchanges apply daily price limit bands — commonly in the roughly 4–10% range depending on the product, and these bands can be widened during volatile periods. If you trade products that have historically moved violently — thermal coal's 2021 rally is the canonical example, when prices roughly doubled over a matter of months and exchanges responded with repeated margin hikes and limit adjustments — your "worst case" isn't a stop-out. It's a limit-locked market where you can't exit at all. Position sizing on Chinese futures must therefore account for gap risk beyond your stop, not just stop distance.

The core reframe: In the US, you pick a risk number and the contract ladder lets you hit it. In China, the contract ladder is coarse, so you work backwards: the contract's fixed risk unit determines which trades you're allowed to take at all.

A Practical Sizing Framework for Chinese Commodity Futures

Here's the process I'd actually run, step by step:

• Step 1 — Fix your risk budget per trade. Keep the US discipline: 0.5–1% of account equity per trade is a sane ceiling for most retail traders, especially in a market with daily limits.
• Step 2 — Compute per-lot risk in RMB, then convert. Per-lot risk = stop distance (yuan/ton) × multiplier. Convert to your account currency at the current USDCNY rate (roughly 7, but check). Use a conservative rate, not the mid-market quote.
• Step 3 — Compare against your risk budget. If one lot exceeds your budget, the trade is untradeable at that stop. Either find a tighter, structurally justified stop (behind a level that actually invalidates the idea) or pass. Do not widen your risk budget to fit the contract.
• Step 4 — Check margin, not just risk. Required margin per lot (exchange minimum + broker buffer) must leave room for adverse moves and potential margin hikes. A good rule: keep total margin used under roughly a third of account equity, so a thermal-coal-style margin hike cycle doesn't force you to liquidate at the worst moment.
• Step 5 — Stress the limit scenario. Ask: if the market locks limit-against me for a day, what's my loss? If the answer is more than ~3–4% of your account, your position is too big regardless of what your stop says.

Worked example: $20,000 account, 1% risk = $200. Rebar stop of 30 points = 300 yuan ≈ $43 per lot. You could take up to 4 lots by risk math — but check margin and correlation first, since 4 lots of rebar and 4 lots of hot-rolled coil are essentially the same macro bet, not eight independent positions.

Same account, iron ore: stop of 12 yuan/ton = 1,200 yuan ≈ $170 per lot. One lot fits. Two lots doesn't. The contract decided — not you. That's the whole lesson.

Correlation Is a Multiplier Problem Too

Chinese commodity clusters are tightly linked. Rebar, hot-rolled coil, and iron ore are one steel-complex trade wearing three tickers. Soybean meal and palm oil both lean on imported oilseed and veg-oil flows. Methanol, PTA, and ethylene glycol move with the coastal chemical chain. If you size each position independently at 1% risk, a three-contract steel-complex position can quietly be a 3% bet on one macro factor — with lumpy multipliers making each leg impossible to fine-tune. Cap risk at the theme level, not the contract level: e.g., no more than 2% total risk across any correlated cluster.

Test It Before You Risk It

None of this is theoretical. The traders who struggle in Chinese futures aren't the ones with bad charts — they're the ones whose US sizing habits silently imported into a market with different contract physics. The fix is reps: calculate per-lot risk, check margin, stress the limit scenario, and repeat until it's reflex.

If you want to pressure-test your sizing system against real Chinese market data without putting capital on the line, that's exactly what we built XS Select for. It's a China futures evaluation platform where you can run your risk framework on real contract specs and real price data — evaluations start from $29. Whatever your edge is, it deserves to be measured against the market where contract multipliers change everything.