Steel Wrap: Gerdau Gains as CSN Slumps on Tariffs
Latin American steel stocks diverged on Friday, with Gerdau rising 0.98% to US$5.15, CSN falling 7.97% to US$1.27, and Ternium gaining 0.50% to US$57.90. The SLX steel ETF rose 0.31% to US$108.97. Gerdau benefits from Brazilian tariffs on long steel, while CSN struggles with flat-steel imports. Ternium's performance reflects Mexican auto demand and nearshoring.
How this was made

The 30-second read
Why it matters
Price moves reflect policy‑driven sector split; no new corporate disclosures.
Market read
Tariff policy continues to drive divergence among Latin American steel stocks.
What to watch
Potential rerouting of Chinese steel to other Latin markets if Mexico's duties shift supply.
Background
Latin American steel stocks diverged on Sep 11 2026 as tariff protections favored long‑steel producers.
Ticker impact
Gerdau rose 0.98% to $5.15 as tariff‑protected long‑steel benefits from Brazil's construction protection.
Potential modest upside if tariffs remain in place.
Tariff shield is a known catalyst; price already reflected, limited upside.
Ternium added 0.50% to $57.90, reflecting modest support from Mexican auto demand and nearshoring.
Likely to stay flat pending broader sector moves.
Move is minor and driven by sector backdrop rather than company‑specific news.
Market effects
Highlights split between protected long‑steel and vulnerable flat‑steel in Latin America.
Brazilian construction tariffs boost Gerdau; Mexican duties aid Ternium.
Limited to Latin American steel exposure; minimal effect on broader markets.
Counterpoint
CSN's deep discount may present a speculative contrarian play if flat‑steel demand improves.
Key entities
- companyGerdau S.A.
Brazilian long‑steel producer.
- companyCompanhia Siderúrgica Nacional (CSN)
Brazilian flat‑steel producer.
- companyTernium
Mexican diversified steel maker.



