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STLD
Steel Dynamics Inc
stockNASDAQ

At CloseOct 9, 2026 3:59:53 PM EDT
238.41USD+1.813%(+4.24)599,378
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Materials
CEO
Mark Millett
HQ
Fort Wayne, IN, USA
Previous Close
$234.17
Beta
1.12
52-Week High
$288.74 2026-06-15
52-Week Low
$140.87 2025-10-16
SMA 50
$241.36
SMA 200
$218.47
Avg. Vol 10D
901,521
Avg. Vol 30D
949,898
Avg. Vol 90D
1.16M
Relative Vol
0.63
143.33M
133.64M
0.2500%
1,100,000
Oct 19, 2026 (9d)
Sep 30, 2026 · $0.530
Mar 31, 2008 · 2-for-1
STLD Profile

steel dynamics, inc. is unique among american steel companies. founded in 1993, sdi began production at its butler, in, flat roll mill in 1996. this state-of-the-art mill remains a world leader in its productivity and production of flat roll steel. finishing facilities at the butler mill and in jeffersonville, in, produce pickled, cold roll, galvanized, and painted flat roll steel. new millennium building systems, a steel fabrication business producing joists, girders, and decking for nonresidential construction projects, began operations in 2000, and today consists of 6 manufacturing facilities in the u.s. and mexico. sdi entered the steel long-products business in 2002, with the production of wide-flange beams at the company's minimill in columbia city, in. in 2010, it was expanded to include production of standard rail, and in 2013 the capability for manufacturing premium rail was added. also in 2002, sdi acquired a steel mill near indianapolis to produce engineered bar steel and

STLD Performance
PeriodPriceDateChangeBeta
1W231.992026-10-02+2.79%2.578
1M237.082026-09-10+0.59%1.049
3M228.422026-07-10+4.40%1.053
6M190.572026-04-10+25.14%0.806
1Y141.232025-10-10+68.85%1.117
2Y128.462024-10-10+85.64%—
5Y60.722021-10-11+292.74%1.117
STLD Stock Summary

Steel Dynamics Inc (NASDAQ:STLD) stock price today is $238.47, and today's volume is 599,378. STLD is up 1.836% today. The 30 day average volume is 949,898. STLD market cap is $34.18B with 143.33M shares outstanding.