← Back to Blog · 2026-10-08 · 8 min read · Market Preview

It's a Friday evening. You're long rebar on the Shanghai Futures Exchange, the position is working, and you're feeling pretty good about the week. Meanwhile, on the SHFE website, a file quietly publishes: the weekly registered warehouse receipt report. Deliverable warrants at a key warehouse just jumped 40% week-over-week. You never saw it. Two weeks later, your long is underwater while traders who read that report are talking about a supply build nobody in your feed mentioned.

If you trade Western markets, you probably live off EIA crude inventories, CFTC positioning, and USDA reports. When traders move to Chinese commodity futures, they often bring that toolkit — and miss the single most direct supply-side dataset each exchange publishes: registered warehouse receipts and weekly inventory statistics. It's free, it's official, it updates on a schedule, and most retail participants trading China futures from overseas simply ignore it. Let's fix that.

What Warehouse Receipts Actually Are (and Why They Move Markets)

A registered warehouse receipt (标准仓单) is a document certifying that a specific quantity of a commodity meeting delivery-grade specifications sits in an exchange-approved warehouse. It's the physical backbone of every Chinese futures contract. When a producer or trader deposits eligible material, receipts are registered. When someone takes delivery or the material leaves the warehouse, receipts are cancelled.

Here's why this matters to a speculator who never intends to make or take delivery: the level and trend of registered receipts tell you how much deliverable supply is sitting behind the contract. Not estimated supply, not survey supply — certified, in-warehouse, deliverable supply.

• Falling receipts into a delivery month means the physical is tightening. Shorts who plan to deliver are running out of ammunition. This is the classic precondition for a delivery squeeze.
• Surging receipts means holders are preparing material for delivery — often a sign that producers or merchants see the futures price as attractive to sell against, i.e., real selling pressure is building.
• Receipts diverging from price is where the edge lives. Price up + receipts piling up = the rally is being sold into by physical holders. Price up + receipts draining = a genuine squeeze dynamic.

Every Chinese exchange publishes this data free: SHFE, DCE, and ZCE all post daily and weekly registered warrant figures on their English and Chinese sites, broken down by warehouse location and, for some products, by delivery grade.

The Weekly Rhythm: When Data Drops and How to Build It Into Your Week

Unlike US inventory reports with fixed broadcast times, Chinese exchange data follows the exchange calendar, and you should anchor your weekend review around it.

• SHFE publishes registered warehouse receipts daily, with a more detailed weekly summary typically published around the end of the trading week (Friday evening China time, which is Friday morning in Europe).
• DCE and ZCE publish warrant and inventory data on their own schedules — DCE weekly warehouse receipt data and ZCE daily warrant registration/cancellation figures are both accessible on the exchange websites.

The practical habit: block 30 minutes every weekend. Pull the latest warrant tables for every product you trade, log the week-over-week change and the multi-week trend in a simple spreadsheet. You're not looking for one number; you're looking for direction and acceleration. A second consecutive week of large receipt cancellations in copper is a very different signal than a one-week blip.

Contract-by-Contract: Where This Signal Actually Works

The warehouse receipt signal isn't equally strong everywhere. It's most powerful in contracts with tight deliverable supply and a history of squeeze behavior. Here's how to think about the majors:

Rebar and Hot-Rolled Coil (SHFE)

Rebar trades on SHFE with a 10-ton contract multiplier and a 1 yuan/ton minimum tick — so one tick is 10 yuan per lot. Rebar is a workhorse for traders who want to trade Chinese infrastructure and property sentiment. Steel is stored in social and mill inventories tracked by industry surveys, but SHFE deliverable warrants give you the exchange-verified slice. When rebar rallies hard while warrants build steadily, that's a warning that mills and traders are using the futures to hedge physical sales — the rally has a ceiling made of steel that's already been registered for delivery.

Iron Ore (DCE)

Iron ore on the Daliang Commodity Exchange carries a 100-ton multiplier and a 0.5 yuan/ton tick — 50 yuan per tick per lot. Ore is imported, concentrated among a handful of supplier countries, and port inventory levels are the market's obsession. DCE warrants plus weekly port stock data form a two-legged supply picture. When port inventories are drawing down for weeks and DCE receipts are thin relative to open interest, the market is structurally short-protected and prone to sharp upward spikes on any demand surprise. This is exactly the kind of setup where buying pullbacks beats chasing breakouts.

Copper (SHFE)

Copper is SHFE's flagship: 5 tons per lot, 10 yuan/ton tick. SHFE copper has a long history of interplay between LME and Shanghai, and the SHFE warrant level is a key input for the Shanghai-London spread logic. Low SHFE stocks relative to consumption tends to support the Shanghai contract relative to LME — the famous backwardation-driven import dynamics. If you trade the SHFE-LME relationship at all, warrant trends aren't optional reading; they're the core of the trade.

Thermal Coal (ZCE) — The Cautionary Tale

The 2021 thermal coal rally is the case study everyone in Chinese commodity futures remembers. Energy shortages, production constraints, and surging demand drove Zhengzhou thermal coal futures up dramatically over a few months — moves so extreme that the exchange intervened repeatedly with margin hikes, position limits, and trading fee adjustments, and prices then collapsed violently when policy supply measures kicked in. The lesson isn't "don't trade squeezes." It's that warrant and inventory data were flashing the physical tightness the whole way up — and the same delivery mechanics that fueled the spike made the reversal brutal once deliverable supply returned. Warehouse receipts tell you when fuel is building; they don't tell you when the regulator throws water on the fire. Respect both.

Warehouse receipts measure the ammunition shorts can use to deliver. They don't measure the exchange's willingness to change the rules mid-battle. In China, always track both.

Combining Receipts With the Rest of the China Data Stack

Warehouse receipts are powerful but one-dimensional. They get dramatically better when layered with the other free datasets that define Chinese commodity futures:

• Exchange open interest and position rankings: SHFE, DCE, and ZCE publish daily volume/open interest and the top-member position tables. Rising open interest + falling receipts = new longs entering against shrinking deliverable supply. That's a pressure cooker.
• Margin and fee changes: Chinese exchanges adjust margins and fees as a policy tool far more actively than Western exchanges. A margin hike on a hot market is often the first official signal that the exchange is uncomfortable with the pace.
• Spot-futures basis: Industry sites track spot prices at key physical hubs. A widening premium of spot over futures with draining warrants is a squeeze setup; a spot discount with building warrants is a hedge-the-rally signal.
• Holiday calendar: Chinese New Year and Golden Week shut the exchanges for about a week. Positions held through holidays carry gap risk, and warrant data right before holidays often shows producers locking in hedges. Plan position size around it.

None of this requires paid terminals. The exchanges publish everything; the work is in building the habit of reading it weekly and keeping your own running record.

A Simple Rule Set You Can Actually Trade

Editorial is nice, but you want rules. Here's a stripped-down framework to start with — treat it as a starting point for your own testing, not a holy grail:

• Rule 1 — Trend filter first. Only take receipt-based signals in the direction of the dominant trend on your trading timeframe. Warrant data is a timing and conviction tool, not a standalone reversal system.
• Rule 2 — Two-week confirmation. Act on receipt trends only after two consecutive weekly prints in the same direction. One week is noise; two is information.
• Rule 3 — Divergence entries. In an uptrend with receipts draining for 2+ weeks, treat sharp pullbacks toward support as higher-probability long entries (tighter stops justified by the squeeze backdrop). In an uptrend with receipts building for 2+ weeks, reduce long size or tighten stops — the physical is selling into your rally.
• Rule 4 — Delivery-month awareness. The closer you are to the delivery window, the more warrant levels dominate. If you hold a position into the month before delivery and receipts are extremely low relative to open interest, you're holding a squeeze lottery ticket. Size accordingly or roll.
• Rule 5 — Policy override. Any exchange margin/fee/limit announcement overrides the technical picture for the next several sessions. The 2021 thermal coal episode is permanent proof.

Backtesting this properly means having access to historical warrant data and realistic contract specifications — tick values, margins, session times (Chinese day sessions run with a break at midday, and many products have night sessions that open at 21:00 Beijing time). That's exactly the kind of environment you want to rehearse in before risking live capital.

Why This Edge Persists (For Now)

You might wonder: if this data is free and official, why isn't it fully priced in? Three reasons. First, language and access friction — the most detailed publications are in Chinese, and many global retail traders never get past the English landing pages. Second, most retail flow in Chinese commodity futures is momentum-driven and headline-driven; the slow weekly receipt drip doesn't generate the adrenaline of a price alert. Third, the signal is inherently contextual — the same receipt build is bullish in one regime and bearish in another, which defeats mechanical copy-paste strategies and rewards traders who actually understand delivery mechanics.

Edges that require homework tend to last longer than edges that fit in a Telegram message. This one requires homework.

Putting It to Work

Start small: pick two products — rebar and iron ore are ideal, liquid and data-rich — and track their warrant reports for four consecutive weeks before you trade on them. Log the numbers, watch how price reacts in the following days, and build your own conviction about which divergence patterns matter in your timeframe. Then paper-trade or run the logic at minimal size until the process is boring.

And if you want to test a complete rule set — entries, exits, risk per trade — against real Chinese market data without putting a trading account on the line, that's precisely what a futures evaluation is for. XS Select runs China futures evaluations on real exchange data starting from $29, so you can prove your warehouse-receipt framework survives contact with rebar and iron ore before you ever fund a live account. No promises about outcomes — just a cleaner way to find out whether your process holds up.

The data is published every week whether you read it or not. The traders who do are the ones who stop being surprised by squeezes — and start positioning for them.