CLARK, N.J., July 11, 2025 /PRNewswire/ -- GEP Global Supply Chain Volatility Index — a leading indicator tracking demand conditions, shortages, transportation costs, inventories, and backlogs based on a monthly survey of 27,000 businesses — jumped to -0.17 in June, from -0.46 in May, its highest in 2025 as worldwide supply chain activity picked up despite the 10% tariffs imposed by the US administration. GEP Global Supply Chain Volatility Index June 2025 GEP Global Supply Chain Volatility Index June 2025 G ...