82.87 cents per pound — that was the settlement price for ICE cotton's December contract on September 22, a single-day decline of 0.66%. But the more telling signal lies beneath the absolute number: US upland cotton net sales to China registered zero for a second consecutive week, shipments fell 20% week-on-week, and crude oil touching a two-week low is dragging polyester feedstock costs down. Cotton's real competitor isn't itself — it's the substitute fiber getting cheaper by the day.
Export Data Reveals the Real Demand Picture
USDA export sales data showed that for the week ending September 10, current-crop upland cotton net sales totaled just 71,231 bales, down 30% from the four-week average. Net sales to China were zero, and zero again for the next marketing year. Shipment figures were even more direct: 142,076 bales moved that week, down 20% from the prior week and 26% below the four-week average, with only 2,437 bales destined for China.
The significance here isn't weekly volatility — it's the persistence of the trend. Two straight weeks of zero net sales to China suggests Chinese buyers are systematically pivoting to other origins or substitute fibers. For US exporters, China — once the largest buyer — is vanishing from the procurement list. This isn't a pricing issue; it's supply chain restructuring.
How Rates and FX Transmit to Cotton Prices
After the Federal Reserve raised rates and signaled further tightening, the dollar strengthened, making dollar-denominated cotton more expensive for buyers holding other currencies. Higher rates also increased carrying costs for traders, dampening the incentive to stockpile. A StoneX strategist noted a correlation between the roughly 30% drop in export sales and rising rate expectations.
A more subtle transmission channel runs through energy markets. Crude fell to a two-week low as Gulf supply prospects improved — Saudi Arabia resumed exports from its Red Sea port, and vessel traffic through the Strait of Hormuz increased. Lower oil prices directly reduce polyester production costs, and polyester is cotton's most direct substitute at the yarn and fabric stage. As polyester staple fiber prices track feedstock downward, spinning mills' willingness to substitute in their cotton blending will rise markedly.
Impact Across the Supply Chain
The Cotlook A Index stood at 93.65 cents/lb on September 22, up 230 points, briefly diverging from ICE futures. This spread reflects spot market acceptance of current price levels, but it also means that if futures continue to weaken, spot prices will face catch-down pressure soon.
For Chinese textile enterprises, weaker foreign cotton prices lower import feedstock costs in the short term, but they also mean export order competition will intensify — Southeast Asian mills are enjoying the same cheap feedstock, with tariff advantages on top. For US cotton traders, zero sales to China means accelerating development of alternative markets in Vietnam, Pakistan, and Turkey. For the polyester chain, falling oil is a short-term positive, but if cotton prices keep sliding, the narrowing spread between the two actually erodes polyester's substitution economics.