Indian companies' $7 bln NDF hoard shows firms seized rupee arbitrage window https://www.reuters.com/world/india/indian-companies-7-billion-ndf-surge-shows-firms-seized-rupee-arbitrage-banks-2026-04-06/?taid=69d3a881619636000154fc86 https://www.reuters.com/world/india/indian-companies-7-billion-ndf-surge-shows-firms-seized-rupee-arbitrage-banks-2026-04-06/?taid=69d3a881619636000154fc86