Steel Dynamics (STLD) Market Cap 1996–2026

As of October 29, 2026, Steel Dynamics had a market cap of $36.12 billion, which increased by 1.43% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Oct 29, 2026, 4:00 PM ET

Steel Dynamics Inc. (STLD)

🌍 United States 📈 NASDAQ 🏭 Basic Materials 🏢 Metals & Mining

Latest Market Cap

$36.12B ▲ 1.43%

Start of 2026

$24.75B ▲ 45.94%

1 Year Ago

$23.1B ▲ 56.36%

All-Time High

$40.84B ▼ 11.56%

Loading data...

Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Steel Dynamics Market Cap History by Year and Month

Steel Dynamics Market Cap History by Year and Month
Year / Month	Market Cap	% Change
2026	$36.12B	▲ 45.94%
October 29, 2026	$36.12B	▲ 13.48%
September 30, 2026	$31.83B	▼ 4.73%
August 31, 2026	$33.41B	▼ 7.40%
July 31, 2026	$36.08B	▲ 8.87%
June 30, 2026	$33.14B	▼ 11.67%
May 29, 2026	$37.52B	▲ 13.77%
April 30, 2026	$32.98B	▲ 26.46%
March 31, 2026	$26.08B	▼ 7.52%
February 27, 2026	$28.2B	▲ 7.55%
January 30, 2026	$26.22B	▲ 5.94%
2025	$24.75B	▲ 43.58%
December 31, 2025	$24.75B	▲ 0.98%
November 28, 2025	$24.51B	▲ 7.03%
October 31, 2025	$22.9B	▲ 11.60%
September 30, 2025	$20.52B	▲ 6.49%
August 29, 2025	$19.27B	▲ 1.74%
July 31, 2025	$18.94B	▼ 0.32%
June 30, 2025	$19B	▲ 4.00%
May 30, 2025	$18.27B	▼ 5.73%
April 30, 2025	$19.38B	▲ 3.75%
March 31, 2025	$18.68B	▼ 7.89%
February 28, 2025	$20.28B	▲ 4.70%
January 31, 2025	$19.37B	▲ 12.37%
2024	$17.238B	▼ 9.80%
December 31, 2024	$17.238B	▼ 22.06%
November 29, 2024	$22.116B	▲ 10.74%
October 31, 2024	$19.972B	▲ 3.51%
September 30, 2024	$19.295B	▲ 4.64%
August 30, 2024	$18.44B	▼ 11.06%
July 31, 2024	$20.732B	▲ 1.89%
June 28, 2024	$20.348B	▼ 3.27%
May 31, 2024	$21.035B	▲ 2.39%
April 30, 2024	$20.543B	▼ 12.26%
March 28, 2024	$23.413B	▲ 10.63%
February 29, 2024	$21.164B	▲ 9.58%
January 31, 2024	$19.313B	▲ 1.06%
2023	$19.111B	▲ 11.41%
December 29, 2023	$19.111B	▼ 0.87%
November 30, 2023	$19.278B	▲ 10.71%
October 31, 2023	$17.413B	▼ 1.95%
September 29, 2023	$17.76B	▲ 0.59%
August 31, 2023	$17.656B	▲ 0.01%
July 31, 2023	$17.654B	▼ 2.59%
June 30, 2023	$18.124B	▲ 16.67%
May 31, 2023	$15.534B	▼ 11.59%
April 28, 2023	$17.571B	▼ 8.67%
March 31, 2023	$19.239B	▼ 11.09%
February 28, 2023	$21.638B	▲ 3.71%
January 31, 2023	$20.863B	▲ 21.63%
2022	$17.153B	▲ 41.71%
December 30, 2022	$17.153B	▼ 6.00%
November 30, 2022	$18.247B	▲ 10.51%
October 31, 2022	$16.512B	▲ 31.81%
September 30, 2022	$12.527B	▼ 15.01%
August 31, 2022	$14.74B	▲ 3.64%
July 29, 2022	$14.222B	▲ 17.73%
June 30, 2022	$12.08B	▼ 25.02%
May 31, 2022	$16.11B	▼ 0.43%
April 29, 2022	$16.18B	▲ 2.48%
March 31, 2022	$15.789B	▲ 16.94%
February 28, 2022	$13.502B	▲ 24.72%
January 31, 2022	$10.826B	▼ 10.56%
2021	$12.104B	▲ 55.66%
December 31, 2021	$12.104B	▲ 2.00%
November 30, 2021	$11.867B	▼ 9.51%
October 29, 2021	$13.114B	▲ 12.25%
September 30, 2021	$11.683B	▼ 15.19%
August 31, 2021	$13.775B	▲ 4.71%
July 30, 2021	$13.155B	▲ 7.51%
June 30, 2021	$12.236B	▼ 7.20%
May 28, 2021	$13.186B	▲ 15.14%
April 30, 2021	$11.452B	▲ 6.81%
March 31, 2021	$10.722B	▲ 22.20%
February 26, 2021	$8.774B	▲ 21.39%
January 29, 2021	$7.228B	▼ 7.05%
2020	$7.776B	▲ 6.49%
December 31, 2020	$7.776B	▲ 2.09%
November 30, 2020	$7.617B	▲ 15.03%
October 30, 2020	$6.622B	▲ 9.95%
September 30, 2020	$6.023B	▼ 3.01%
August 31, 2020	$6.21B	▲ 7.70%
July 31, 2020	$5.766B	▲ 5.07%
June 30, 2020	$5.488B	▼ 1.75%
May 29, 2020	$5.586B	▲ 9.42%
April 30, 2020	$5.105B	▲ 7.68%
March 31, 2020	$4.741B	▼ 16.63%
February 28, 2020	$5.687B	▼ 11.27%
January 31, 2020	$6.409B	▼ 12.23%
2019	$7.302B	▲ 7.91%
December 31, 2019	$7.302B	▲ 0.48%
November 29, 2019	$7.267B	▲ 11.10%
October 31, 2019	$6.541B	▲ 1.74%
September 30, 2019	$6.429B	▲ 8.43%
August 30, 2019	$5.929B	▼ 14.40%
July 31, 2019	$6.926B	▲ 3.19%
June 28, 2019	$6.712B	▲ 20.07%
May 31, 2019	$5.59B	▼ 20.84%
April 30, 2019	$7.062B	▼ 10.19%
March 29, 2019	$7.863B	▼ 5.99%
February 28, 2019	$8.364B	▲ 1.47%
January 31, 2019	$8.243B	▲ 21.81%
2018	$6.767B	▼ 33.79%
December 31, 2018	$6.767B	▼ 16.25%
November 30, 2018	$8.08B	▼ 12.58%
October 31, 2018	$9.243B	▼ 12.88%
September 28, 2018	$10.61B	▼ 1.18%
August 31, 2018	$10.737B	▼ 3.02%
July 31, 2018	$11.071B	▲ 2.12%
June 29, 2018	$10.841B	▼ 7.04%
May 31, 2018	$11.662B	▲ 10.23%
April 30, 2018	$10.58B	▲ 1.30%
March 29, 2018	$10.444B	▼ 4.34%
February 28, 2018	$10.918B	▲ 1.30%
January 31, 2018	$10.778B	▲ 5.46%
2017	$10.22B	▲ 17.81%
December 29, 2017	$10.22B	▲ 12.02%
November 30, 2017	$9.123B	▲ 3.47%
October 31, 2017	$8.817B	▲ 6.64%
September 29, 2017	$8.268B	▲ 0.05%
August 31, 2017	$8.264B	▼ 2.71%
July 31, 2017	$8.494B	▼ 1.12%
June 30, 2017	$8.59B	▲ 4.53%
May 31, 2017	$8.218B	▼ 6.08%
April 28, 2017	$8.75B	▲ 3.97%
March 31, 2017	$8.416B	▼ 5.12%
February 28, 2017	$8.87B	▲ 7.61%
January 31, 2017	$8.243B	▼ 4.98%
2016	$8.675B	▲ 99.70%
December 30, 2016	$8.675B	▲ 0.28%
November 30, 2016	$8.651B	▲ 29.24%
October 31, 2016	$6.694B	▲ 9.88%
September 30, 2016	$6.092B	▲ 1.52%
August 31, 2016	$6.001B	▼ 8.20%
July 29, 2016	$6.537B	▲ 9.46%
June 30, 2016	$5.972B	▼ 0.70%
May 31, 2016	$6.014B	▼ 2.05%
April 29, 2016	$6.14B	▲ 12.02%
March 31, 2016	$5.481B	▲ 23.89%
February 29, 2016	$4.424B	▼ 0.83%
January 29, 2016	$4.461B	▲ 2.69%
2015	$4.344B	▼ 8.85%
December 31, 2015	$4.344B	▲ 3.18%
November 30, 2015	$4.21B	▼ 5.86%
October 30, 2015	$4.472B	▲ 7.53%
September 30, 2015	$4.159B	▼ 11.79%
August 31, 2015	$4.715B	▼ 2.74%
July 31, 2015	$4.848B	▼ 3.31%
June 30, 2015	$5.014B	▼ 4.93%
May 29, 2015	$5.274B	▼ 1.44%
April 30, 2015	$5.351B	▲ 10.15%
March 31, 2015	$4.858B	▲ 10.38%
February 27, 2015	$4.401B	▲ 6.98%
January 30, 2015	$4.114B	▼ 13.68%
2014	$4.766B	▲ 9.44%
December 31, 2014	$4.766B	▼ 12.05%
November 28, 2014	$5.419B	▼ 2.04%
October 31, 2014	$5.532B	▲ 1.78%
September 30, 2014	$5.435B	▼ 2.58%
August 29, 2014	$5.579B	▲ 9.59%
July 31, 2014	$5.091B	▲ 18.37%
June 30, 2014	$4.301B	▲ 11.48%
May 30, 2014	$3.858B	▼ 5.46%
April 30, 2014	$4.081B	▲ 2.80%
March 31, 2014	$3.97B	▲ 2.08%
February 28, 2014	$3.889B	▲ 5.77%
January 31, 2014	$3.677B	▼ 15.57%
2013	$4.355B	▲ 44.49%
December 31, 2013	$4.355B	▲ 7.69%
November 29, 2013	$4.044B	▲ 1.30%
October 31, 2013	$3.992B	▲ 7.86%
September 30, 2013	$3.701B	▲ 9.85%
August 30, 2013	$3.369B	▼ 1.95%
July 31, 2013	$3.436B	▲ 4.56%
June 28, 2013	$3.286B	▼ 2.87%
May 31, 2013	$3.383B	▲ 2.05%
April 30, 2013	$3.315B	▼ 5.23%
March 28, 2013	$3.498B	▲ 4.08%
February 28, 2013	$3.361B	▲ 0.66%
January 31, 2013	$3.339B	▲ 10.78%
2012	$3.014B	▲ 4.80%
December 31, 2012	$3.014B	▲ 6.39%
November 30, 2012	$2.833B	▲ 2.24%
October 31, 2012	$2.771B	▲ 12.51%
September 28, 2012	$2.463B	▼ 8.03%
August 31, 2012	$2.678B	▼ 5.20%
July 31, 2012	$2.825B	▲ 10.01%
June 29, 2012	$2.568B	▲ 11.22%
May 31, 2012	$2.309B	▼ 17.54%
April 30, 2012	$2.8B	▼ 12.09%
March 30, 2012	$3.185B	▼ 1.82%
February 29, 2012	$3.244B	▼ 7.08%
January 31, 2012	$3.491B	▲ 21.38%
2011	$2.876B	▼ 27.77%
December 30, 2011	$2.876B	▼ 0.21%
November 30, 2011	$2.882B	▲ 5.53%
October 31, 2011	$2.731B	▲ 25.91%
September 30, 2011	$2.169B	▼ 22.09%
August 31, 2011	$2.784B	▼ 18.50%
July 29, 2011	$3.416B	▼ 3.86%
June 30, 2011	$3.553B	▼ 4.87%
May 31, 2011	$3.735B	▼ 5.99%
April 29, 2011	$3.973B	▼ 3.03%
March 31, 2011	$4.097B	▲ 1.84%
February 28, 2011	$4.023B	▲ 1.59%
January 31, 2011	$3.96B	▼ 0.55%
2010	$3.982B	▲ 4.02%
December 31, 2010	$3.982B	▲ 14.89%
November 30, 2010	$3.466B	▲ 9.82%
October 29, 2010	$3.156B	▲ 3.07%
September 30, 2010	$3.062B	▲ 3.31%
August 31, 2010	$2.964B	▼ 4.54%
July 30, 2010	$3.105B	▲ 8.57%
June 30, 2010	$2.86B	▼ 9.95%
May 28, 2010	$3.176B	▼ 6.64%
April 30, 2010	$3.402B	▼ 10.02%
March 31, 2010	$3.781B	▲ 7.02%
February 26, 2010	$3.533B	▲ 7.75%
January 29, 2010	$3.279B	▼ 14.34%
2009	$3.828B	▲ 88.48%
December 31, 2009	$3.828B	▲ 4.93%
November 30, 2009	$3.648B	▲ 26.40%
October 30, 2009	$2.886B	▼ 12.73%
September 30, 2009	$3.307B	▼ 7.13%
August 31, 2009	$3.561B	▲ 1.34%
July 31, 2009	$3.514B	▲ 10.54%
June 30, 2009	$3.179B	▲ 16.79%
May 29, 2009	$2.722B	▲ 20.12%
April 30, 2009	$2.266B	▲ 41.36%
March 31, 2009	$1.603B	▲ 5.46%
February 27, 2009	$1.52B	▼ 21.24%
January 30, 2009	$1.93B	▼ 4.97%
2008	$2.031B	▼ 64.17%
December 31, 2008	$2.031B	▲ 35.31%
November 28, 2008	$1.501B	▼ 37.20%
October 31, 2008	$2.39B	▼ 30.24%
September 30, 2008	$3.426B	▼ 31.18%
August 29, 2008	$4.978B	▼ 20.72%
July 31, 2008	$6.279B	▼ 18.91%
June 30, 2008	$7.743B	▲ 13.55%
May 30, 2008	$6.819B	▲ 3.58%
April 30, 2008	$6.583B	▲ 5.50%
March 31, 2008	$6.24B	▲ 13.60%
February 29, 2008	$5.493B	▲ 10.68%
January 31, 2008	$4.963B	▼ 12.45%
2007	$5.669B	▲ 90.17%
December 31, 2007	$5.669B	▲ 16.72%
November 30, 2007	$4.857B	▼ 5.47%
October 31, 2007	$5.138B	▲ 21.35%
September 28, 2007	$4.234B	▲ 7.65%
August 31, 2007	$3.933B	▲ 3.45%
July 31, 2007	$3.802B	▼ 3.99%
June 29, 2007	$3.96B	▼ 10.65%
May 31, 2007	$4.432B	▲ 5.85%
April 30, 2007	$4.187B	▼ 0.02%
March 30, 2007	$4.188B	▲ 14.46%
February 28, 2007	$3.659B	▼ 3.79%
January 31, 2007	$3.803B	▲ 27.57%
2006	$2.981B	▲ 94.71%
December 29, 2006	$2.981B	▼ 0.17%
November 30, 2006	$2.986B	▲ 8.15%
October 31, 2006	$2.761B	▲ 8.19%
September 29, 2006	$2.552B	▼ 4.46%
August 31, 2006	$2.671B	▼ 8.93%
July 31, 2006	$2.933B	▼ 11.74%
June 30, 2006	$3.323B	▲ 17.50%
May 31, 2006	$2.828B	▲ 2.80%
April 28, 2006	$2.751B	▲ 10.04%
March 31, 2006	$2.5B	▲ 25.82%
February 28, 2006	$1.987B	▼ 0.90%
January 31, 2006	$2.005B	▲ 30.96%
2005	$1.531B	▼ 16.66%
December 30, 2005	$1.531B	▲ 2.41%
November 30, 2005	$1.495B	▲ 11.99%
October 31, 2005	$1.335B	▼ 8.81%
September 30, 2005	$1.464B	▲ 7.81%
August 31, 2005	$1.358B	▼ 1.95%
July 29, 2005	$1.385B	▲ 21.92%
June 30, 2005	$1.136B	▼ 6.81%
May 31, 2005	$1.219B	▼ 1.30%
April 29, 2005	$1.235B	▼ 23.43%
March 31, 2005	$1.613B	▼ 23.95%
February 28, 2005	$2.121B	▲ 15.71%
January 31, 2005	$1.833B	▼ 0.22%
2004	$1.837B	▲ 64.16%
December 31, 2004	$1.837B	▼ 9.15%
November 30, 2004	$2.022B	▲ 22.40%
October 29, 2004	$1.652B	▼ 14.05%
September 30, 2004	$1.922B	▲ 23.52%
August 31, 2004	$1.556B	▼ 3.89%
July 30, 2004	$1.619B	▲ 14.34%
June 30, 2004	$1.416B	▲ 12.20%
May 28, 2004	$1.262B	▲ 6.32%
April 30, 2004	$1.187B	▼ 2.70%
March 31, 2004	$1.22B	▲ 2.69%
February 27, 2004	$1.188B	▲ 8.39%
January 30, 2004	$1.096B	▼ 2.06%
2003	$1.119B	▲ 95.63%
December 31, 2003	$1.119B	▲ 16.20%
November 28, 2003	$0.963B	▲ 7.48%
October 31, 2003	$0.896B	▲ 22.91%
September 30, 2003	$0.729B	▼ 5.57%
August 29, 2003	$0.772B	▲ 7.07%
July 31, 2003	$0.721B	▲ 9.57%
June 30, 2003	$0.658B	▲ 3.13%
May 30, 2003	$0.638B	▲ 10.57%
April 30, 2003	$0.577B	▲ 3.41%
March 31, 2003	$0.558B	▼ 3.29%
February 28, 2003	$0.577B	▼ 8.85%
January 31, 2003	$0.633B	▲ 10.66%
2002	$0.572B	▲ 7.72%
December 31, 2002	$0.572B	▼ 15.26%
November 29, 2002	$0.675B	▲ 8.87%
October 31, 2002	$0.62B	▼ 0.32%
September 30, 2002	$0.622B	▲ 8.17%
August 30, 2002	$0.575B	▼ 28.92%
July 31, 2002	$0.809B	▲ 3.72%
June 28, 2002	$0.78B	▼ 7.58%
May 31, 2002	$0.844B	▲ 2.18%
April 30, 2002	$0.826B	▲ 7.41%
March 28, 2002	$0.769B	▲ 23.63%
February 28, 2002	$0.622B	▼ 0.64%
January 31, 2002	$0.626B	▲ 17.89%
2001	$0.531B	▲ 5.99%
December 31, 2001	$0.531B	▲ 12.98%
November 30, 2001	$0.47B	▼ 1.26%
October 31, 2001	$0.476B	▲ 5.31%
September 28, 2001	$0.452B	▼ 25.90%
August 31, 2001	$0.61B	▲ 4.99%
July 31, 2001	$0.581B	▲ 1.93%
June 29, 2001	$0.57B	▼ 9.52%
May 31, 2001	$0.63B	▼ 3.52%
April 30, 2001	$0.653B	▲ 29.05%
March 30, 2001	$0.506B	▼ 10.60%
February 28, 2001	$0.566B	▲ 13.65%
January 31, 2001	$0.498B	▼ 0.60%
2000	$0.501B	▼ 34.42%
December 29, 2000	$0.501B	▲ 10.11%
November 30, 2000	$0.455B	▼ 18.60%
October 31, 2000	$0.559B	▲ 30.61%
September 29, 2000	$0.428B	▼ 24.11%
August 31, 2000	$0.564B	▲ 6.82%
July 31, 2000	$0.528B	▲ 24.82%
June 30, 2000	$0.423B	▼ 5.37%
May 31, 2000	$0.447B	▼ 18.13%
April 28, 2000	$0.546B	▼ 1.62%
March 31, 2000	$0.555B	▼ 24.69%
February 29, 2000	$0.737B	▼ 1.21%
January 31, 2000	$0.746B	▼ 2.36%
1999	$0.764B	▲ 32.18%
December 31, 1999	$0.764B	▲ 15.93%
November 30, 1999	$0.659B	▲ 0.46%
October 29, 1999	$0.656B	▼ 12.77%
September 30, 1999	$0.752B	▼ 12.76%
August 31, 1999	$0.862B	▲ 1.41%
July 30, 1999	$0.85B	▲ 14.56%
June 30, 1999	$0.742B	▼ 9.18%
May 28, 1999	$0.817B	▲ 1.11%
April 30, 1999	$0.808B	▲ 1.89%
March 31, 1999	$0.793B	▲ 2.45%
February 26, 1999	$0.774B	▼ 5.26%
January 29, 1999	$0.817B	▲ 41.35%
1998	$0.578B	▼ 26.37%
December 31, 1998	$0.578B	▼ 13.73%
November 30, 1998	$0.67B	— 0.00%
October 30, 1998	$0.67B	▲ 4.85%
September 30, 1998	$0.639B	▲ 19.22%
August 31, 1998	$0.536B	▼ 23.32%
July 31, 1998	$0.699B	▲ 4.48%
June 30, 1998	$0.669B	▼ 29.50%
May 29, 1998	$0.949B	▼ 15.34%
April 30, 1998	$1.121B	▲ 7.68%
March 31, 1998	$1.041B	▲ 11.70%
February 27, 1998	$0.932B	▼ 4.99%
January 30, 1998	$0.981B	▲ 24.97%
1997	$0.785B	▼ 14.11%
December 31, 1997	$0.785B	▼ 13.64%
November 28, 1997	$0.909B	▼ 12.93%
October 31, 1997	$1.044B	▼ 9.61%
September 30, 1997	$1.155B	▼ 4.47%
August 29, 1997	$1.209B	▼ 4.65%
July 31, 1997	$1.268B	▲ 5.93%
June 30, 1997	$1.197B	▲ 11.14%
May 30, 1997	$1.077B	▲ 15.43%
April 30, 1997	$0.933B	▲ 11.47%
March 31, 1997	$0.837B	▼ 12.54%
February 28, 1997	$0.957B	▼ 13.86%
January 31, 1997	$1.111B	▲ 21.55%
1996	$0.914B	— 0.00%
December 31, 1996	$0.914B	— 0.00%

All market cap values reflect closing prices for the period shown.

📊 Steel Dynamics Market Cap and Other Industry Peers

Below are selected companies from the Basic Materials sector / subsector:

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.