The EIA reported that total U.S. propane/propylene inventories increased by 817 Mbbl for the week ended July 31, approximately 1.4 MMbbl below industry expectations for a 2.2-MMbbl build and about 350 Mbbl less than the five-year average build of 1.2 MMbbl. Stocks reached 103.1 MMbbl (red line in the chart below), standing 18.4 MMbbl, or 22%, above the same week in 2025 (blue line). Inventories were also 13.2 MMbbl, or 15%, above the previous five-year maximum and 24.3 MMbbl, or 31%, above the five-year average (green line). The smaller-than-normal national build was partly driven by a counter-seasonal draw in PADD 3.
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