US cotton quality dropped four percentage points in a week to 42%, versus 55% a year ago, yet ICE cotton futures fell instead of rising. On August 4, the December contract settled at 82.46 cents per pound, down 0.13% from the prior day. This divergence reflects a tug-of-war between weather premium and substitute costs, signaling that textile raw material pricing logic is shifting from single supply-demand to multi-commodity linkage.
Background
The USDA weekly crop progress report showed that as of August 2, US cotton quality was only 42%, down from 46% the previous week and 55% a year ago. Persistent hot and dry weather in Texas, which accounts for over 40% of US cotton output, raised concerns about lower yields and supported prices for three consecutive sessions. However, ICE futures failed to hold gains and fell on August 4, driven by profit-taking.
Meanwhile, international oil prices plunged over 5% in a single day to a three-week low. Comments from Qatari and US officials eased fears of supply disruption in the Strait of Hormuz, improving supply expectations. Lower oil prices directly reduce polyester chain costs, and polyester is the main substitute for cotton in textile raw materials. When polyester weakens, cotton's relative competitiveness declines, capping upside for cotton prices.
ICE deliverable No.2 cotton futures inventory continued to decline, falling to 86,371 bales on August 3 from 87,606 bales the prior session. Tightening stocks should support prices, but capital clearly focused more on macro sentiment and substitute costs. The US dollar index fell, while the S&P 500 and Dow hit record highs, indicating risk appetite did not deteriorate despite the oil drop, with funds moving into equities rather than commodities.
Industry Impact
A widening cotton-polyester spread means what? For spinners, it opens a window for blend ratio adjustment. Polyester staple fiber prices fall with oil, while cotton remains relatively firm due to weather premium. As the spread widens, the economics of increasing polyester in blended yarns improve. But downstream orders often specify blend ratios, so buyers need to negotiate with clients rather than simply switch raw materials.
For cotton traders, the declining US quality is a medium-term bullish factor, but the short-term pullback indicates the market has partially digested the weather premium. If rain materializes in Texas, prices could fall further; otherwise, they could resume upward. Traders should monitor weather forecast changes rather than rely solely on single reports.
For exporters, lower oil prices reduce shipping costs, but RMB exchange rate fluctuations and overseas demand uncertainty remain key variables. Record US stocks reflect confidence in demand resilience, but textile and apparel, as discretionary goods, often recover with a lag behind macro indicators.