Commodity Freight Flows

Which freight is firming?

Directional demand proxies for the commodities that move on flatbeds, rail cars and barges — steel, coal, grain. Built from official BLS producer prices and live market proxies. A lagged lens on where demand is heading — not shipment tracking, and not a forecast.

Freight-demand proxies are firming for Steel & iron.

These are LAGGED public price + market-momentum proxies for the DIRECTION of freight demand — a lens to think with, not shipment tracking and not a forecast.

Steel & iron

Firming

Moves via: Flatbed truck, rail (coil/plate), Great Lakes ore boats

PPI: Iron & steel: +17.9% YoY · +5.6% 3mo (BLS (WPU101))Steel producers ETF: -0.4% 3moNucor: -2.1% 3mo

Freight lens: Firming steel prices historically travel with more mill output and outbound coil/plate tonnage — a leading-ish, lagged proxy for flatbed/rail steel demand, not a shipment count.

  • ↳ Prices can rise on real demand OR on supply constraints/input costs — a price move alone doesn't tell you which.
  • ↳ Volume and price can diverge; treat this as a directional cue to investigate, not a shipment count.

Coal

Steady / mixed

Moves via: Unit trains (rail), river barge, some truck

PPI: Coal: -4.1% YoY · +0.1% 3mo (BLS (WPU051))Peabody Energy: +10.1% 3mo

Freight lens: Coal price/producer strength tracks loosely with rail coal carloads and barge volume. Structurally declining long-term, so read momentum against that backdrop.

  • ↳ Prices can rise on real demand OR on supply constraints/input costs — a price move alone doesn't tell you which.
  • ↳ Volume and price can diverge; treat this as a directional cue to investigate, not a shipment count.

Grain & agriculture

Steady / mixed

Moves via: Hopper rail, river barge, truck to elevator

PPI: Grains: +17.7% YoY · -5.8% 3mo (BLS (WPU012))Corn futures: +26.4% 3moSoybean futures: +17.8% 3mo

Freight lens: Grain prices move with harvest, exports and stocks. Rising prices/tight stocks tend to pull rail-hopper and barge demand toward export terminals — seasonal and lagged.

  • ↳ Prices can rise on real demand OR on supply constraints/input costs — a price move alone doesn't tell you which.
  • ↳ Volume and price can diverge; treat this as a directional cue to investigate, not a shipment count.

How to read this

  • • Sources: BLS Producer Price Index (official, ~1mo lag) + Yahoo Finance market proxies.
  • • Price direction is a PROXY for volume direction — they can and do diverge.
  • • Directional and informational only; not a trading, investment, or freight-rate recommendation.

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