Private company

Companhia Siderúrgica Nacional

Logo: Companhia Siderúrgica Nacional, Public domain, via Wikimedia Commons4

Brazilian steelmaker

Companhia Siderúrgica Nacional (CSN) lit. 'National Siderurgy Company' or 'National Steel Company' is the largest fully integrated steel producer in Brazil and one of the largest in Latin America in terms of crude steel production. Its main plant is located in the city of Volta Redonda, in the state of Rio de Janeiro. Its current CEO is Benjamin Steinbruch.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1941Founded1
  • Industryiron and steel industry, metal industry1
  • HeadquartersRio de Janeiro1
  • Websitewww.csn.com.br
  • Legal formS.A.1
  • Listed onNew York Stock Exchange (SID), São Paulo Stock Exchange (CSNA3)1
  • LEI529900K40TEND42S0T463
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressAv. Brigadeiro Faria Lima, 3.400 - ANDAR 19 E 20, 04538-132 Sao Paulo, Brazil3
  • Registered withBrazilian Internal Revenue Service, 33.042.730/0001-043
CSN01
Photo: HenriqueBarraMansa, CC BY-SA 3.0, via Wikimedia Commons7

Companhia Siderúrgica Nacional (CSN) lit. 'National Siderurgy Company' or 'National Steel Company' is the largest fully integrated steel producer in Brazil and one of the largest in Latin America in terms of crude steel production. Its main plant is located in the city of Volta Redonda, in the state of Rio de Janeiro. Its current CEO is Benjamin Steinbruch.2

Corporate structure

Companhia Siderúrgica Nacional sits at the top of its group. 6 entities, 3 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Companhia Siderúrgica Nacional Sao Paulo, Brazil
    • Stahlwerk Thüringen Unterwellenborn, Germany
    • CEEE GT Subsidiary · 98.98% · Porto Alegre
    • Transnordestina Logística Subsidiary · Fortaleza, Brazil
    • CSN STEEL SOCIEDAD LIMITADA Subsidiary · Leioa, Spain
      • GALVACOLOR JEREZ S.L. Subsidiary · Jerez de los Caballeros, Spain

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What Companhia Siderúrgica Nacional reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

The story

Foundation and expansion (1941–1980)

Companhia Siderúrgica Nacional was created as a state-owned company on April 9, 1941, during the "Estado Novo era", during the term of Brazilian president, Getúlio Vargas, after an agreement between the American and the Brazilian governments (see the Washington Accords) for the construction of a facility that would provide steel for the Allies during the Second World War and later be an aid for Brazil's development. It began its operations in 1946, under Eurico Gaspar Dutra's presidency.

CSN was a Brazilian corporation incorporated in 1941 pursuant to a decree of Brazilian President Getúlio Vargas. The Presidente Vargas Steelworks, located at Volta Redonda, in Rio de Janeiro State, started production in 1946. It initially produced coke, pig iron castings and long products. Two major expansions were undertaken at the Presidente Vargas Steelworks during the 1970s. The first, completed in 1974, increased installed annual production capacity to 1.6 million tons of crude steel. The second, completed in 1977, raised capacity to 2.4 million tons of crude steel.

1980–2005

CSN underwent another expansion in 1989, increasing capacity to 4.5 million tons of crude steel. The company was privatized through a series of auctions held in 1993 and early 1994, through which the Brazilian government sold its 91% interest in the company.

In 1993, CSN adopted a capital improvement program, which was revised and extended in 1995. The goals were: an increase in annual production of crude steel; improvement in productivity, increase in the quality of the products, and enhancement of the environmental protection and cleanup programs. Since February 1996, all production has been based on the continuous casting process, rather than ingot casting, an alternative method that resulted in lower energy use and metal loss. From 1996 through 2002, CSN spent the equivalent of US$2.4 billion under the capital improvement program and for operational capacity maintenance, culminating with the revamping in 2001 of Blast Furnace #3 and Hot Strip Mill #2 at the Presidente Vargas Steelworks increasing annual production capacity to 5.6 million tons of crude steel and 5.1 million tons of rolled products, from approximately 5.0 million tons in each case.

In 2005 reinforced its position as the largest iron-mining operation in the country, through a controlling stake in Companhia Vale do Rio Doce (CVRD).

In January 2004, the CSN board announced the approval of investments up to US$820 million to be made through 2007, including: expansion of production at the Casa de Pedra iron ore mine from 15.5 to approximately 40 million tons; expansion of the coal terminal adjacent to the Sepetiba Port facilities to enable annual exports of up to 30 million tons of iron ore; and the construction of a six million-ton pellet plant. The company also explored opportunities for acquisitions or mergers abroad in order to expand output, and proposed to build a new steel plant which would have doubled current annual production of 5.8 million tons of raw steel, at an estimated investment cost of US$2.6 billion. Seeking to maintain focus on its program of acquisitions and growth, CSN set aside $520 million for investments in 2005.

Privatization (1993–present)

In 1993 the company was privatized by Itamar Franco's government, during the National Program for Privatization led by the federal government, started by Fernando Collor and continued by Franco.

Its main factories were located in Volta Redonda, at the Vale do Paraíba region, southern Rio de Janeiro state, and its iron mines at Congonhas and Arcos, both of them cities in the Minas Gerais state, and the coal mines at Siderópolis, Santa Catarina state.

Read the full text

During almost 50 years of state control, the Brazilian flat steel sector was coordinated on a national basis under the auspices of Siderbrás, the national steel monopoly. The state had far less involvement in the non-flat steel sector, which has traditionally been made up of smaller private sector companies. The larger integrated flat steel producers operated as semiautonomous companies under the control of Siderbrás and were individually privatized during 1991 to 1993.

Proposed merger-acquisition with Corus

In 2006 CSN made a rival bid to acquire the Anglo-Dutch steel firm Corus, following an announcement the acquisition of Corus by Tata Steel of India for $8.1 billion (£4.5 billion, or £4.55 per share). Competitive bidding between the two companies raised the final price to £6.08 per share in 2007, with Tata outbidding CSN.

CSN and Corus had earlier been partners in a Portuguese venture until early this year, when Corus sold its stake to CSN.

From Wikipedia’s article on Companhia Siderúrgica Nacional, shared under CC BY-SA 4.0.5

Products and brands

  • steel

Listed on Wikidata.1

CSN primarily operates as an integrated steel producer in Brazil. It produces a line of steel products, including slabs, which are semi-finished products used for processing hot-rolled, cold-rolled, or coated coils and sheet products; hot-rolled products comprising heavy-gauge hot-rolled coils and sheets, and light-gauge hot-rolled coils and sheets; cold-rolled products, including cold-rolled coils and sheets; and galvanized products consisting of flat-rolled steel coated with zinc or a zinc-based alloy. The company also offers tin mill products, including tin plate, tin free steel, low tin coated steel, and black plate products. CSN also mines iron ore, limestone, and dolomite, and maintains strategic investments in railroads and power supply companies. The company sells its steel products to customers in Brazil and 71 other countries in North America, Europe, and Asia through its sales force and distributors. It is considered one of the most productive steel-makers in the world, producing more than 6 million tons of raw steel and more than 5 million tons of laminates per year.

From Wikipedia’s article on Companhia Siderúrgica Nacional, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Subsidiaries

Also owns

Subsidiaries (GLEIF)

From Wikidata.1 Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Acquisitions

  1. Oct 21, 2022Acquired Companhia Estadual de Geração de Energia Elétrica1

Timeline

  1. Jul 1, 2000Went public Listed on São Paulo Stock Exchange1
  2. 1941Founded Founded1

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 65. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Vanguard Capital Management LLC4,514,354$4.1M0.0%+82,496
Renaissance Technologies LLC3,611,400$3.3M0.0%−1,407,800
Dimensional Fund Advisors LP3,505,358$3.2M0.0%−75,906
UBS Group AG3,340,494$3.1M0.0%+1,756,253
Citadel Advisors LLC2,115,644$1.9M0.0%+1,307,988
State Street Corp1,702,500$1.7M0.0%−19,451
Jane Street Group, LLC1,647,143$1.5M0.0%−207,495
Banque Cantonale Vaudoise1,600,000$1.5M0.2%No change
Two Sigma Investments, LP1,040,380$951.9K0.0%+178,986
XTX Topco Ltd724,005$662.5K0.0%+199,948
Northern Trust Corp553,278$506.2K0.0%−5,668
Caption Management, LLC511,519$468.0K0.0%−151,907
Van Eck Associates Corp446,203$410.5K0.0%+57,693
Barometer Capital Management Inc.396,900$363.2K0.1%+22,100
Marshall Wace, Llp350,283$322.3K0.0%−637,833
Vanguard Fiduciary Trust Co293,007$268.1K0.0%No change
Morgan Stanley243,461$222.8K0.0%−793,058
Millennium Management LLC237,081$216.9K0.0%−598,472
Goldman Sachs Group Inc123,241$112.8K0.0%−1,006,198
Invesco Ltd.118,968$108.9K0.0%−5,078
Inspire Advisors, LLC116,079$106.1K0.0%+32,226
Jpmorgan Chase & Co104,442$95.1K0.0%−747,517
Storebrand Asset Management As87,441$80.0K0.0%−137,389
Susquehanna International Group, Llp86,602$79.2K0.0%−44,304
Inspire Investing, LLC75,981$69.5K0.0%+23,612

13F reports cover disclosed long positions in U.S. stocks only.