US cotton production was cut by 410,000 bales, yet futures fell 2.45%. That divergence matters more than the report itself.
The Pricing Logic Behind the Divergence
The USDA's September supply and demand report set 2026/27 US cotton production at 13.2 million bales, down 410,000 from August, while ending stocks were trimmed from 4 million to 3.6 million bales. On paper, supply is tightening. Yet ICE's most-active December contract settled at 86.06 cents/lb, down 2.16 cents.
The reason: the market had already priced in a larger cut. Longs had bet on deeper reductions before the report, and when the actual decline fell short, they rushed to take profits, producing a classic "bullish data, bearish tape" reversal. Regionally, the Delta and Southwest saw both yields and output decline, while the Southeast and West edged higher, meaning the cut was not broad-based, further undermining bullish conviction.
For mills, this means the near-term cost anchor for raw material has not shifted upward. Futures weakness will gradually feed into the Cotlook A Index and spot quotes. The Cotlook A Index stood at 98.20 cents/lb on September 11, up 100 points, but futures-spot divergence rarely persists. Buyers need not rush to restock at elevated levels.
Export Structure: Volume Recovers, China Goes to Zero
The real alarm comes from export data. For the week ended September 3, current-crop US upland cotton net sales rose to 73,854 running bales, up 168% from 27,500 the prior week. On aggregate, that looks like a solid recovery.
But drill down: net sales to China were zero. Net sales to China for the next marketing year were also zero. Shipments totaled 177,774 running bales, down 6% week-on-week, with only 450 bales destined for China.
This tells us the export increment came almost entirely from markets outside China. For domestic mills, the cost-effectiveness and availability of foreign cotton are both deteriorating in the short run, which will reshape quota usage and bonded warehouse inventory structures. For US exporters, losing China—their largest single buyer—means sales pressure shifts toward Vietnam, Pakistan and Turkey, rearranging global cotton trade flows.
Polyester Substitution Pressure Returns
Another overlooked variable is oil. Crude fell on news that Middle East talks might restart, though it was still on track for a weekly gain above 8%.
Lower oil directly reduces polyester fiber production costs, and polyester is cotton's primary substitute at the yarn stage. When cotton lacks upward momentum and polyester costs decline in tandem, spinning mills have stronger incentives to raise chemical fiber ratios in their blends. This pressures pure-cotton yarn producers and affects the cost competitiveness of blended products.
Meanwhile, CBOT soybean futures retreated after hitting a record high, cooling investor sentiment across the agricultural complex. Traders track grains and cotton together because crop returns influence next year's planting area allocation. If cotton prices remain weak relative to grains, 2027/28 US planting intentions could shrink further—a medium-term supply variable worth monitoring.