Gross Domestic Product: Management of Companies and Enterprises (NAICS 55) in Montana was 370.40000 Mil. of $ in July of 2025, according to the United States Federal Reserve. Historically, Gross Domestic Product: Management of Companies and Enterprises (NAICS 55) in Montana reached a record high of 370.40000 in July of 2025 and a record low of 64.70000 in January of 2005. Trading Economics provides the current actual value, an historical data chart and related indicators for Gross Domestic Product: Management of Companies and Enterprises (NAICS 55) in Montana - last updated from the United States Federal Reserve on April of 2026.