← Back to Blog · 2026-09-09 · 8 min read · Trading Education

It's 11:40 p.m. in London. You're long two lots of iron ore on the Dalian night session, up a comfortable margin, and you decide to watch the last thirty minutes from the couch. You doze off. At 23:00 the session closes. Somewhere around 3 a.m., a headline moves the raw materials complex, and by the time Dalian reopens for the day session, your position has gapped through your stop, your stop, in fact, never traded at all, because the market was already three ticks below it at the open.

If you trade Chinese commodity futures from outside China, this scenario isn't a hypothetical. It's a Tuesday. Overnight and night-session risk is the single biggest difference between trading China's markets and trading CME or ICE products, and most of the damage comes from one mistake: treating a stop-loss order as if it were risk management. It isn't. A stop is an execution tool. Risk management is the math you do before you ever click buy. Let's walk through both.

First, Understand How China's Night Sessions Actually Work

Chinese commodity exchanges run a day session (roughly 9:00–11:30 and 13:30–15:00, Beijing time) plus a night session that opens at 21:00. How late the night session runs depends on the product:

• Most Dalian (DCE) and Zhengzhou (CZCE) contracts — iron ore, soybean meal, methanol, palm oil, PTA — trade until 23:00.
• Shanghai Futures Exchange (SHFE) base metals like copper and aluminum run until roughly 1:00 a.m.
• SHFE gold and silver, and crude oil on the Shanghai International Energy Exchange (INE), run until around 2:30 a.m. — the longest window, designed to overlap with US hours.

Two structural quirks matter enormously for stop placement:

1. The night session belongs to the next trading day. Monday's 21:00 open is officially part of Tuesday's trading day. This sounds like trivia until you realize it changes how daily price limits and settlement prices apply to your overnight position.

2. There are hard gaps in the clock. Between the 15:00 day close and the 21:00 night open, there's a six-hour window where Chinese markets can't react to anything. And before Chinese public holidays — Golden Week in early October, Chinese New Year — night sessions are typically suspended, meaning a position held into the break absorbs a week-long information gap in one opening print. Every experienced China futures trader has a Golden Week story. Most of them aren't happy ones.

Know Your Contract Math Cold

You cannot size a stop on a contract you can't price in your head. Chinese commodity futures have multipliers that make small-per-tick moves surprisingly expensive. Here are the specs you'll use most:

Notice what this means in practice. A one-yuan-per-ton move in rebar is ¥10 per lot — trivial. But iron ore moves in ¥50 chunks per tick, and a single lot of crude oil swings ¥100 for every tenth of a yuan per barrel. If you're used to ES or micro contracts, the multiplier here will punish sloppy sizing fast.

Run one concrete example. Say your account is $10,000 and your rule is to risk 1% per trade — $100, roughly ¥700. You want to trade iron ore around ¥800/ton with a stop ¥8/ton below entry. At 100 tons per lot, that stop risks ¥800 on a single lot. That's already over your budget for the entire trade. Your options: tighten the stop to a level that still makes structural sense, or don't take the trade. The contract multiplier just told you something honest that your enthusiasm was about to override. Listen to it.

Choosing the Stop: Structure First, Volatility Second

There are two defensible ways to place a stop on Chinese commodity futures, and one indefensible way. The indefensible way is a fixed dollar or fixed tick distance that ignores what the contract actually does. Here's what works:

Structural stops

Place the stop beyond the most recent meaningful swing — below the last swing low for longs, above the last swing high for shorts — plus a small buffer. On liquid contracts like rebar and iron ore, the buffer should account for the fact that night-session liquidity thins noticeably in the final hour before close. A stop sitting exactly at the swing low is a stop sitting exactly where everyone else's is. Give it room, but pay for that room with smaller size.

Volatility stops (ATR-based)

Use a multiple of the average true range on the daily chart — 1.5x to 2x ATR is a common starting point. In an active tape, rebar's daily range might run somewhere in the ¥40–70/ton zone; in a dead tape it can be half that. The point isn't the exact number. The point is that your stop distance should breathe with the market. Fixed stops get stopped out by noise in volatile regimes and give back too much in quiet ones.

What you should not do is park a stop just inside a round number. Iron ore at ¥800.00 is a magnet for resting orders. If your logic says the stop belongs near ¥800, put it at ¥793 or ¥787 and adjust size accordingly.

The Gap Problem: Stops Don't Save You, Sizing Does

Here's the uncomfortable truth about overnight positions in China futures: your stop-loss is a request, not a guarantee. Chinese exchanges match orders at the opening auction, and if the market opens beyond your stop, you get filled at the open — wherever that is. April 2020 made this lesson unmissable globally: when WTI crude went negative, traders with stops discovered that stops describe where you'd like to exit, not where you will. Chinese contracts gapped hard around that period too, and INE crude — with its 2:30 a.m. close — gave overnight holders a long night.

So the real risk control for overnight positions happens before entry:

• Halve your size for anything held through a night session close. If your day-trade size is four lots of rebar, your overnight size is two. The gap risk you can't stop out of is compensated by the exposure you didn't take.
• Never hold full size into a multi-day holiday gap. Golden Week and Chinese New Year deserve respect. Either flatten or carry a token position you'd be fine seeing gapped 5% against.
• Check where the night session sits relative to your stop. A stop that's 2x ATR away is fine intraday; if you're holding through the 15:00–21:00 dead zone and into the night, ask whether that distance still covers a realistic opening gap. Often the honest answer is to be smaller, not to widen the stop.

A stop-loss tells the market where you plan to exit. Position sizing decides whether that exit matters. Only one of the two is under your control when the market gaps.

When the Exchange Changes the Rules Mid-Trade

Western traders often don't appreciate how actively Chinese exchanges intervene. Daily price limits — typically in the 4–12% range depending on the contract — and margin requirements are tools the exchanges adjust in real time when volatility spikes.

The 2021 thermal coal episode is the canonical case study. Through September and October of that year, thermal coal futures on Zhengzhou rallied in a near-vertical line — the contract roughly doubled in a matter of weeks — as China's power shortage collided with supply constraints. The exchange responded by repeatedly raising margin requirements (eventually to levels north of 50% for some contract months, by most reports) and widening price limits. Then came the policy intervention on the physical market, and the futures collapsed in a string of limit-down days. Traders who were long at the top couldn't exit at any price for multiple sessions — the market simply locked at its downside limit with no buyers. Traders who were short earlier watched their windfalls evaporate in margin hikes that froze capital.

The lessons for stop placement are specific:

• A stop inside a limit-locked market doesn't exist. If the contract opens limit-down and stays there, there is no exit at any price. Your only protection was position size.
• Margin hikes can force you out before your stop does. If the exchange doubles margins overnight and your account can't meet the call, your broker will cut the position — at the market, not at your stop.
• When a market has moved parabolically, stop distances calibrated to normal ATR are fantasy. Either widen dramatically with proportionally tiny size, or stand aside.

A Practical Overnight Checklist

Before you carry any Chinese commodity futures position through a night session or a close, run this list:

• Define risk in yuan, not ticks. Ticks × tick value × lots = yuan at risk. Know that number before entry.
• Confirm your stop actually lives server-side. Many platforms execute stops locally in your software. If your laptop sleeps or your connection drops at 1 a.m., a local stop dies with it. Ask your broker explicitly whether stops sit on their server or on your machine.
• Check the exchange calendar. Any night session suspension — holidays, special announcements — changes your gap exposure overnight. The exchanges publish these schedules; read them weekly.
• Check current margin and limit levels. Don't assume last month's parameters. After any volatility spike, verify the exchange hasn't hiked margins or changed limits on your contract.
• Size for the gap, not the stop. Ask: if this opens 3% against me with no fill near my stop, what does my account look like? If the answer makes you flinch, the position is too big — regardless of where the stop sits.
• Respect the liquidity fade. The last hour of the night session is the thinnest tape you'll trade in China. Wider stops, smaller size, or flat — pick one.

Test It Before You Bet Your Account on It

None of this is theoretical, but all of it is testable. The gap behavior, the limit-lock scenarios, the margin math — you can rehearse every one of these decisions on real historical Chinese market data before a single yuan of real money is at stake. That's genuinely the smartest sequencing: build your stop and sizing rules, stress them against actual China futures sessions, and only then scale up.

If you want a structured way to do exactly that, XS Select runs a China futures evaluation built on real market data — you can put your overnight risk framework through its paces for as little as $29 and find out whether your rules survive a real Dalian night session. No promises about outcomes; the market will tell you what it thinks of your stops. But finding out cheaply beats finding out at 3 a.m. with your whole account on the line.