Short-seller stampede, policy-triggered reversal, and limit-up trading—PVC’s stunning 48-hour turnaround

The entry of industrial capital often serves as the earliest signal of a market reversal. Yet few noticed it at the time, as the short-sellers’ momentum was simply too overwhelming. What truly transformed the entire market landscape occurred three days later. Policy ‘ignition’: How three documents reshaped the rules of the game Thursday, August 28. On this day, the Ministry of Housing and Urban-Rural Development, the Ministry of Natural Resources, and the National Financial Regulatory Administration jointly issued the ‘Notice on Improving the Commodity Residential Housing Sales System.’ On the same day, the People’s Bank of China (PBOC) and the National Financial Regulatory Administration released a credit reform document, while the China Securities Regulatory Commission (CSRC) issued a document supporting the real estate sector through capital markets. Three policy documents—released simultaneously. This was no minor adjustment, but rather a systemic transformation—from “rescuing individual projects” to “establishing institutional frameworks.” Breaking them down, three key points merit attention: First, ready-to-move-in housing sales. The notice explicitly requires local governments to implement ready-to-move-in housing sales in an effective and orderly manner, ensuring “what you see is what you get.” For newly tendered land parcels designated for commodity residential housing, ready-to-move-in sales shall be prioritized. Additionally, the “handover of keys concurrent with issuance of property title deeds” model will be promoted. In recent years, stalled construction projects (“ghost developments”) have posed the greatest credit risk in China’s real estate market. Under the presale system, misappropriation of funds led to widespread project suspensions—directly cutting off demand for PVC pipes and profiles. Ready-to-move-in sales plug this institutional loophole: houses can only be sold once fully constructed, meaning construction must be completed. Second, higher presale thresholds. The notice stipulates that for commodity residential projects operating under the presale system, the structural framework of each building unit must be fully capped before presales are permitted. In the past, many developers began selling units after merely excavating foundations; now that is no longer allowed—structural capping is mandatory prior to presale, imposing hard requirements on construction progress. Third, credit easing. The maximum term for personal housing loans has been extended from 30 to 40 years. With the same loan amount, monthly repayments decrease, effectively lowering home-buying thresholds. Meanwhile, a “lead bank system” for developers’ loans has been established, shifting financing criteria from reliance on “borrower creditworthiness” toward assessment based on “project-specific fundamentals.” Together, these three policies form a clear transmission chain: ready-to-move-in sales ensure continuous construction → structural capping before presale ensures progress → credit easing boosts sales → financing reforms secure funding. For PVC, real estate is its largest downstream end-use sector—pipes, profiles, windows, and doors—all hinge on housing. PVC demand had remained persistently weak over the past two years, primarily due to dismal real estate starts and construction data. That very evening—August 28—PVC night-session futures surged 3.14%, closing at RMB 4,662/ton. The market began repricing. The short-seller ‘stampede’: 100,000 contracts liquidated, limit-up hit The August 28 night session was merely the beginning. August 29–30: weekend—markets digested the policy news. Monday, August 31: opening day. Contract V2701 opened at RMB 4,590/ton and rose steadily thereafter. At 10:33 a.m., it hit the daily limit-up price of RMB 4,791/ton. More noteworthy than the limit-up itself was the position data. That day, open interest in V2701 fell to 1.114 million contracts—a reduction of over 100,000 contracts from the previous day. From the peak of 1.29 million contracts on August 27, cumulative position reduction over just two trading days exceeded 170,000 contracts. The core driver behind this rally was not aggressive long-position buildup—but rather concentrated short-covering and forced liquidations. Prior to the policy announcement, short positions had increased by 440,000 contracts to push prices lower. Now, confronted with dual pressure from policy tailwinds and surging spot-market activity, those shorts faced immense liquidation pressure.

The money game behind PVC’s limit-up: After the short-seller stampede, can fundamentals sustain the rally?

Three supports: policy, cost, and maintenance shutdowns That said, this rally cannot be attributed solely to speculative fund flows. Fundamentals indeed provide three concrete supports: First, policy support. The August 28 real estate policy package is no ordinary positive catalyst. The ready-to-move-in housing sales system guarantees continuity in ongoing construction—since unsold units must be fully built, construction must proceed uninterrupted, thereby institutionally securing demand for PVC pipes and profiles. Extending mortgage terms to 40 years eases monthly repayment burdens, unleashing purchasing power among first-time homebuyers. This shift—from “rescuing individual projects” to “establishing institutional frameworks”—represents a qualitatively different level and depth of policy intervention. Second, cost support. As of August 28, per-ton production profits stood at -RMB 842 for calcium carbide-based PVC and -RMB 820 for ethylene-based PVC. For producers sourcing calcium carbide externally, marginal losses even exceeded RMB 1,000/ton. Industry-wide deep losses mean enterprises lack both the willingness and capacity to cut prices further. Lan炭 (lanthanum-carbon) prices in Shaanxi stood at RMB 930/ton; calcium carbide in Shandong at RMB 2,830/ton—costs effectively anchored prices near RMB 4,500/ton. Third, supply-side constraints. As of the week ending August 27, national PVC overall capacity utilization dropped to 66.69%, down 1.68 percentage points week-on-week. Calcium carbide-based utilization stood at 68.42%; ethylene-based at 62.81%. This decline in operating rates isn’t purely seasonal maintenance—it reflects proactive load reductions driven by severe losses. Three additional plants plan upcoming maintenance shutdowns. Three constraints: inventory, demand, and exports That said, hitting the limit-up doesn’t mean all challenges have vanished. Constraints remain equally clear: Inventory. As of August 27, total PVC inventory across sample warehouses in East and South China reached 981,800 tons—down 1.51% week-on-week, yet still up 19.88% year-on-year. Registered warehouse receipts have remained persistently high at ~120,000 tons. Inventory drawdown is positive, but absolute levels remain elevated. Demand. Average开工率 (operating rates) among downstream PVC product manufacturers stood at just 39%, 9 percentage points lower than last year. From January to July 2026, China’s apparent PVC consumption declined 4.82% year-on-year—the first instance of negative growth over a half-year horizon in recent years. Pipe manufacturing operating rates stood at 33.60%; profile manufacturing at 37.70%—the traditional “Golden September–Silver October” season hasn’t truly begun yet. Exports. On August 18, India initiated an anti-subsidy investigation against Chinese PVC imports. In 2025, China exported 1.5151 million tons of PVC to India—accounting for 39.63% of China’s total PVC exports. Should anti-subsidy duties be imposed, this market faces direct disruption. Compounding this are the April cancellation of export tax rebates and India’s July imposition of minimum import price controls—export pressures are mounting. How to view the outlook? Three key indicators With prices having surged to the RMB 4,791/ton limit-up, what comes next? Three critical watchpoints: First, open interest. Over 100,000 short contracts remain outstanding. These shorts face persistent liquidation pressure—meaning short-term price momentum may continue upward. However, if open interest subsequently rises alongside further price gains, it would signal fresh long-position entries taking over—shifting the rally’s nature from “short-covering flight” to “long-position offensive.” Second, spot-market follow-through. On August 31, spot quotations in Hangzhou for calcium carbide-based Grade V PVC ranged from RMB 4,600–4,700/ton; in Linyi, from RMB 4,660–4,700/ton. Futures hit the limit-up, and spot prices rose accordingly—but less sharply. Basis is weakening.

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