The CSN bond swap that opened on 31 July 2026 did not appear from nowhere. A blast furnace at an integrated steel mill; CSN is one of Brazil's largest steel and mining groups. The rating set up the swap; the swap did not trigger the rating. Seen that way, the CSN swap is a signal about the sector’s cost of capital, not only about one balance sheet. Related readingSources: Moody's; CSN Inova Ventures; Companhia Siderurgica Nacional (CSN).