{ "version": "1.0.0", "asOf": "2026-06", "basketSize": 16, "yoyDI": 81.3, "momDI": 65.6, "smoothedYoyDI": 81.3, "history": [ [ "2022-03", 100 ], [ "2022-04", 93.8 ], [ "2022-05", 93.8 ], [ "2022-06", 93.8 ], [ "2022-07", 81.3 ], [ "2022-08", 75 ], [ "2022-09", 68.8 ], [ "2022-10", 62.5 ], [ "2022-11", 50 ], [ "2022-12", 56.3 ], [ "2023-01", 56.3 ], [ "2023-02", 50 ], [ "2023-03", 50 ], [ "2023-04", 37.5 ], [ "2023-05", 37.5 ], [ "2023-06", 37.5 ], [ "2023-07", 43.8 ], [ "2023-08", 43.8 ], [ "2023-09", 37.5 ], [ "2023-10", 37.5 ], [ "2023-11", 31.3 ], [ "2023-12", 31.3 ], [ "2024-01", 37.5 ], [ "2024-02", 37.5 ], [ "2024-03", 31.3 ], [ "2024-04", 37.5 ], [ "2024-05", 43.8 ], [ "2024-06", 50 ], [ "2024-07", 62.5 ], [ "2024-08", 50 ], [ "2024-09", 50 ], [ "2024-10", 68.8 ], [ "2024-11", 62.5 ], [ "2024-12", 62.5 ], [ "2025-01", 81.3 ], [ "2025-02", 81.3 ], [ "2025-03", 81.3 ], [ "2025-04", 87.5 ], [ "2025-05", 81.3 ], [ "2025-06", 75 ], [ "2025-07", 81.3 ], [ "2025-08", 81.3 ], [ "2025-09", 81.3 ], [ "2025-10", 81.3 ], [ "2025-11", 75 ], [ "2025-12", 75 ], [ "2026-01", 81.3 ], [ "2026-02", 75 ], [ "2026-03", 68.8 ], [ "2026-04", 81.3 ], [ "2026-05", 81.3 ], [ "2026-06", 81.3 ] ], "momHistory": [ [ "2021-04", 87.5 ], [ "2021-05", 75 ], [ "2021-06", 87.5 ], [ "2021-07", 81.3 ], [ "2021-08", 93.8 ], [ "2021-09", 81.3 ], [ "2021-10", 93.8 ], [ "2021-11", 81.3 ], [ "2021-12", 62.5 ], [ "2022-01", 75 ], [ "2022-02", 87.5 ], [ "2022-03", 84.4 ], [ "2022-04", 93.8 ], [ "2022-05", 81.3 ], [ "2022-06", 62.5 ], [ "2022-07", 56.3 ], [ "2022-08", 56.3 ], [ "2022-09", 37.5 ], [ "2022-10", 18.8 ], [ "2022-11", 37.5 ], [ "2022-12", 56.3 ], [ "2023-01", 50 ], [ "2023-02", 81.3 ], [ "2023-03", 56.3 ], [ "2023-04", 68.8 ], [ "2023-05", 56.3 ], [ "2023-06", 31.3 ], [ "2023-07", 43.8 ], [ "2023-08", 31.3 ], [ "2023-09", 50 ], [ "2023-10", 31.3 ], [ "2023-11", 43.8 ], [ "2023-12", 75 ], [ "2024-01", 68.8 ], [ "2024-02", 75 ], [ "2024-03", 62.5 ], [ "2024-04", 68.8 ], [ "2024-05", 62.5 ], [ "2024-06", 62.5 ], [ "2024-07", 43.8 ], [ "2024-08", 43.8 ], [ "2024-09", 50 ], [ "2024-10", 68.8 ], [ "2024-11", 56.3 ], [ "2024-12", 68.8 ], [ "2025-01", 62.5 ], [ "2025-02", 75 ], [ "2025-03", 75 ], [ "2025-04", 43.8 ], [ "2025-05", 56.3 ], [ "2025-06", 50 ], [ "2025-07", 65.6 ], [ "2025-08", 62.5 ], [ "2025-09", 37.5 ], [ "2025-10", 43.8 ], [ "2025-11", 50 ], [ "2025-12", 81.3 ], [ "2026-01", 87.5 ], [ "2026-02", 68.8 ], [ "2026-03", 75 ], [ "2026-04", 81.3 ], [ "2026-05", 93.8 ], [ "2026-06", 65.6 ] ], "risingCount": 13, "fallingCount": 3, "components": [ { "key": "ppi.steel", "label": "Steel", "value": 360.07, "yearAgo": 309.23, "yoyPct": 16.4, "direction": "rising" }, { "key": "ppi.aluminum", "label": "Aluminum", "value": 414.17, "yearAgo": 296.37, "yoyPct": 39.7, "direction": "rising" }, { "key": "ppi.copper", "label": "Copper", "value": 587.67, "yearAgo": 335.18, "yoyPct": 75.3, "direction": "rising" }, { "key": "ppi.resins", "label": "Plastic resins", "value": 309.52, "yearAgo": 265.1, "yoyPct": 16.8, "direction": "rising" }, { "key": "ppi.chemicals", "label": "Industrial chemicals", "value": 344.26, "yearAgo": 298.54, "yoyPct": 15.3, "direction": "rising" }, { "key": "ppi.ironSteel", "label": "Iron and steel", "value": 365.23, "yearAgo": 320.66, "yoyPct": 13.9, "direction": "rising" }, { "key": "ppi.lumber", "label": "Lumber", "value": 280.03, "yearAgo": 266.57, "yoyPct": 5.1, "direction": "rising" }, { "key": "ppi.paper", "label": "Paper", "value": 281.2, "yearAgo": 254.05, "yoyPct": 10.7, "direction": "rising" }, { "key": "ppi.machinery", "label": "Machinery", "value": 199.61, "yearAgo": 185.68, "yoyPct": 7.5, "direction": "rising" }, { "key": "ppi.castings", "label": "Metal castings", "value": 296.68, "yearAgo": 283.24, "yoyPct": 4.7, "direction": "rising" }, { "key": "ppi.fasteners", "label": "Fasteners", "value": 328.58, "yearAgo": 342.81, "yoyPct": -4.2, "direction": "falling" }, { "key": "ppi.paints", "label": "Paints and coatings", "value": 422.95, "yearAgo": 420.56, "yoyPct": 0.6, "direction": "rising" }, { "key": "ppi.industrialGases", "label": "Industrial gases", "value": 208.63, "yearAgo": 219.42, "yoyPct": -4.9, "direction": "falling" }, { "key": "electricity", "label": "Industrial electricity", "value": 9.17, "yearAgo": 8.9, "yoyPct": 3, "direction": "rising" }, { "key": "naturalGas", "label": "Natural gas", "value": 4.37, "yearAgo": 4.65, "yoyPct": -6, "direction": "falling" }, { "key": "laborManufacturing", "label": "Factory earnings", "value": 30.32, "yearAgo": 28.99, "yoyPct": 4.6, "direction": "rising" } ], "inputStatus": [ { "key": "ppi.steel", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.aluminum", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.copper", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.resins", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.chemicals", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.ironSteel", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.lumber", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.paper", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.machinery", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.castings", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.fasteners", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.paints", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "ppi.industrialGases", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false }, { "key": "electricity", "through": "2026-06", "lagMonths": 1, "pinning": true, "stalled": false }, { "key": "naturalGas", "through": "2026-06", "lagMonths": 1, "pinning": true, "stalled": false }, { "key": "laborManufacturing", "through": "2026-07", "lagMonths": 0, "pinning": false, "stalled": false } ], "statusNote": "Reads through 2026-06, pinned by electricity and naturalGas — 1 month behind the freshest input. The index publishes only months where every input has reported, so it advances when those inputs do.", "methodology": { "name": "MFG Calcs Input Cost Diffusion Index (ICDI)", "slug": "us-manufacturing-input-cost-diffusion-index", "version": "1.0.0", "url": "https://www.mfgcalcs.com/signals/input-cost-diffusion", "formula": "A classic diffusion index of the BREADTH of U.S. manufacturing input-cost increases. Over a frozen basket of 16 monthly cost-input series, at each qualifying month t: DI = 100 x (risers + 0.5 x unchanged) / n, where a riser is a series with value_t greater than value_compare, unchanged is exactly equal, and n is the basket size that month. DI = 50 is balance (as many rising as falling); above 50 means broad-based cost increases. Two series are published: the year-over-year DI (t vs t-12, the headline) and the month-over-month DI (t vs t-1), plus a 3-month moving average of the year-over-year DI. The index is computed only for months where ALL 16 basket series have data, so a series entering or leaving the sample can never move the number.", "basket": "FROZEN v1.0.0 basket (16 series, constant): Steel, Aluminum, Copper, Plastic resins, Industrial chemicals, Iron and steel, Lumber, Paper, Machinery, Metal castings, Fasteners, Paints and coatings, Industrial gases, Industrial electricity, Natural gas, Factory earnings. Pinned and versioned, never tuned to a result.", "unit": "diffusion index, 0 to 100; 50 = balance; components in percent year-over-year.", "scope": "A diffusion index measures how BROAD-BASED cost increases are, complementing the MFG Calcs Cost Pressure Index, which measures their MAGNITUDE. An ILLUSTRATIVE composite, not an official statistic. Its value is a frozen, reproducible methodology: the same basket, formula, and window every month, so the number is comparable over time and anyone can rebuild it from the cited public data.", "source": "U.S. federal open data — BLS producer price indexes and manufacturing earnings, EIA industrial electricity and natural gas.", "provenance": "Derived from public-domain U.S. government series. Redistributable.", "license": "https://creativecommons.org/licenses/by/4.0/", "attribution": "MFG Calcs (mfgcalcs.com)", "asOf": "2026-06", "basketSize": 16 } }