Steel Dynamics, Inc.
US ˙ NasdaqGS ˙ US8581191009

SecuritySTLD / Steel Dynamics, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,964,864 shares
Latest Disclosed Value $ 353,572,032
Dimensional Fund Advisors Lp reports 9.04% decrease in ownership of STLD / Steel Dynamics, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,964,864 shares of Steel Dynamics, Inc. (US:STLD) valued at $353,675,520 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,160,250 shares of Steel Dynamics, Inc.. This represents a change in shares of -9.04% during the quarter. The current value of the position is $527,565,984 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F STEEL DYNAMICS COM 858119100 1,964,864 -195,386 -9.04 353,572 -3.41 0.0734
2026-02-12 2025-12-31 13F STEEL DYNAMICS COM 858119100 2,160,250 -69,032 -3.10 366,073 17.78 0.0768
2025-11-12 2025-09-30 13F STEEL DYNAMICS COM 858119100 2,229,282 -225,260 -9.18 310,816 -1.10 0.0667
2025-08-12 2025-06-30 13F STEEL DYNAMICS COM 858119100 2,454,542 -340,773 -12.19 314,286 -10.10 0.0728
2025-05-13 2025-03-31 13F STEEL DYNAMICS COM 858119100 2,795,315 -119,255 -4.09 349,578 5.15 0.0869
2025-02-13 2024-12-31 13F STEEL DYNAMICS COM 858119100 2,914,570 -505,637 -14.78 332,469 -22.90 0.0798
2024-11-07 2024-09-30 13F STEEL DYNAMICS COM 858119100 3,420,207 -225,901 -6.20 431,213 -8.66 0.1046
2024-08-09 2024-06-30 13F STEEL DYNAMICS COM 858119100 3,646,108 -260,849 -6.68 472,085 -18.48 0.1233
2024-05-10 2024-03-31 13F STEEL DYNAMICS COM 858119100 3,906,957 -348,463 -8.19 579,128 15.23 0.1568
2024-02-07 2023-12-31 13F STEEL DYNAMICS COM 858119100 4,255,420 -298,960 -6.56 502,590 2.92 0.1468
2023-11-09 2023-09-30 13F STEEL DYNAMICS COM 858119100 4,554,380 -65,155 -1.41 488,311 -2.96 0.1602
2023-08-09 2023-06-30 13F STEEL DYNAMICS COM 858119100 4,619,535 -1,125,421 -19.59 503,226 -22.52 0.1604
2023-05-12 2023-03-31 13F STEEL DYNAMICS COM 858119100 5,744,956 23,146 0.40 649,493 116,088.19 0.2188
2023-02-09 2022-12-31 13F STEEL DYNAMICS COM 858119100 5,721,810 -405,918 -6.62 559 -99.87 0.1652
2022-11-10 2022-09-30 13F STEEL DYNAMICS COM 858119100 6,127,728 -476,537 -7.22 434,765 -0.48 0.1669
2022-08-12 2022-06-30 13F STEEL DYNAMICS COM 858119100 6,604,265 24,736 0.38 436,858 -20.42 0.1567
2022-05-13 2022-03-31 13F STEEL DYNAMICS COM 858119100 6,579,529 131,147 2.03 548,937 37.15 0.1691
2022-02-09 2021-12-31 13F STEEL DYNAMICS COM 858119100 6,448,382 22,762 0.35 400,241 6.51 0.1210
2021-11-12 2021-09-30 13F STEEL DYNAMICS COM 858119100 6,425,620 67,683 1.06 375,789 -0.83 0.1210
2021-08-12 2021-06-30 13F STEEL DYNAMICS COM 858119100 6,357,937 -295,291 -4.44 378,920 12.18 0.1200
2021-05-14 2021-03-31 13F STEEL DYNAMICS COM 858119100 6,653,228 -182,561 -2.67 337,792 34.03 0.1117
2021-03-08 2020-12-31 13F/A-2 STEEL DYNAMICS COM 858119100 6,835,789 -250,198 -3.53 252,032 24.23 0.0910
2021-02-11 2020-12-31 13F STEEL DYNAMICS COM 858119100 6,835,789 -250,198 252,032 91,020.5622
2020-11-12 2020-09-30 13F STEEL DYNAMICS COM 858119100 7,085,987 163,720 2.37 202,870 12.34 0.0860
2020-08-13 2020-06-30 13F STEEL DYNAMICS COM 858119100 6,922,267 856,102 14.11 180,588 32.11 0.0794
2020-05-14 2020-03-31 13F STEEL DYNAMICS COM 858119100 6,066,165 201,265 3.43 136,699 -31.53 0.0712
2020-02-14 2019-12-31 13F STEEL DYNAMICS COM 858119100 5,864,900 145,673 2.55 199,643 17.15 0.0728
2019-11-12 2019-09-30 13F STEEL DYNAMICS COM 858119100 5,719,227 200,839 3.64 170,421 2.25 0.0662
2019-08-13 2019-06-30 13F STEEL DYNAMICS COM 858119100 5,518,388 537,945 10.80 166,664 -5.11 0.0647
2019-08-12 2019-03-31 13F/A-2 STEEL DYNAMICS COM 858119100 4,980,443 508,062 11.36 175,647 30.74 0.0700
2019-05-10 2019-03-31 13F STEEL DYNAMICS COM 858119100 4,980,443 508,062 175,647
2019-02-26 2018-12-31 13F/A-1 STEEL DYNAMICS COM 858119100 4,472,381 309,961 7.45 134,353 -28.58 0.0609
2019-02-13 2018-12-31 13F STEEL DYNAMICS COM 858119100 4,472,381 309,961 134,353
2018-11-13 2018-09-30 13F STEEL DYNAMICS COM 858119100 4,162,420 1,179 0.03 188,107 -1.62 0.0716
2018-08-10 2018-06-30 13F STEEL DYNAMICS COM 858119100 4,161,241 14,041 0.34 191,211 4.27 0.0762
2018-05-11 2018-03-31 13F STEEL DYNAMICS COM 858119100 4,147,200 -13,568 -0.33 183,389 2.18 0.0764
2018-02-12 2017-12-31 13F STEEL DYNAMICS COM 858119100 4,160,768 -51,480 -1.22 179,479 23.61 0.0744
2017-11-13 2017-09-30 13F STEEL DYNAMICS COM 858119100 4,212,248 247,077 6.23 145,199 2.26 0.0635
2017-08-11 2017-06-30 13F STEEL DYNAMICS COM 858119100 3,965,171 168,784 4.45 141,987 7.60 0.0656
2017-05-12 2017-03-31 13F STEEL DYNAMICS COM 858119100 3,796,387 -1,091,643 -22.33 131,954 -24.13 0.0631
2017-02-09 2016-12-31 13F STEEL DYNAMICS COM 858119100 4,888,030 -761,381 -13.48 173,930 23.20 0.0869
2016-11-10 2016-09-30 13F STEEL DYNAMICS COM 858119100 5,649,411 -237,847 -4.04 141,181 -2.11 0.0763
2016-08-09 2016-06-30 13F STEEL DYNAMICS COM 858119100 5,887,258 -100,656 -1.68 144,226 7.00 0.0830
2016-05-13 2016-03-31 13F STEEL DYNAMICS COM 858119100 5,987,914 128,900 2.20 134,792 28.74 0.0807
2016-02-10 2015-12-31 13F STEEL DYNAMICS COM 858119100 5,859,014 315,739 5.70 104,702 9.95 0.0653
2015-11-13 2015-09-30 13F STEEL DYNAMICS COM 858119100 5,543,275 190,396 3.56 95,230 -14.13 0.0625
2015-08-14 2015-06-30 13F STEEL DYNAMICS COM 858119100 5,352,879 297,252 5.88 110,901 9.14 0.0679
2015-05-14 2015-03-31 13F STEEL DYNAMICS COM 858119100 5,055,627 34,522 0.69 101,617 2.51 0.0642
2015-02-06 2014-12-31 13F STEEL DYNAMICS COM 858119100 5,021,105 669,294 15.38 99,125 0.74 0.0651
2014-11-13 2014-09-30 13F STEEL DYNAMICS COM 858119100 4,351,811 64,356 1.50 98,399 27.86 0.0697
2014-08-08 2014-06-30 13F STEEL DYNAMICS COM 858119100 4,287,455 -27,348 -0.63 76,956 0.26 0.0535
2014-05-14 2014-03-31 13F STEEL DYNAMICS COM 858119100 4,314,803 75,830 1.79 76,757 -7.33 0.0574
2014-02-12 2013-12-31 13F STEEL DYNAMICS COM 858119100 4,238,973 269,371 6.79 82,827 24.88 0.0645
2013-11-13 2013-09-30 13F STEEL DYNAMICS COM 858119100 3,969,602 205,244 5.45 66,326 18.17 0.0574
2013-08-15 2013-06-30 13F STEEL DYNAMICS COM 858119100 3,764,358 3,764,358 56,129 0.0529
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.