스틸 다이나믹스, Inc.
MX ˙ BMV ˙ US8581191009
SecurityMX:STLD / Steel Dynamics, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,620,437 shares
Latest Disclosed Value $ 291,678,660
Northern Trust Corp reports 0.01% decrease in ownership of STLD / Steel Dynamics, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,620,437 shares of Steel Dynamics, Inc. (MX:STLD) valued at $291,678,660 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,620,542 shares of Steel Dynamics, Inc.. This represents a change in shares of -0.01% during the quarter.

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.

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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)
2026-05-14 2026-03-31 13F STEEL DYNAMICS COM 858119100 1,620,437 -105 -0.01 291,679 6.22 0.0079
2026-02-17 2025-12-31 13F STEEL DYNAMICS COM 858119100 1,620,542 -54,650 -3.26 274,601 17.57 0.0350
2025-11-14 2025-09-30 13F STEEL DYNAMICS COM 858119100 1,675,192 3,804 0.23 233,572 9.17 0.0299
2025-08-13 2025-06-30 13F STEEL DYNAMICS COM 858119100 1,671,388 -69,311 -3.98 213,954 -1.73 0.0294
2025-05-13 2025-03-31 13F STEEL DYNAMICS COM 858119100 1,740,699 -34,587 -1.95 217,727 7.52 0.0323
2025-02-14 2024-12-31 13F STEEL DYNAMICS COM 858119100 1,775,286 259,361 17.11 202,507 5.95 0.0287
2024-11-13 2024-09-30 13F STEEL DYNAMICS COM 858119100 1,515,925 -125,590 -7.65 191,128 -10.09 0.0313
2024-08-14 2024-06-30 13F STEEL DYNAMICS COM 858119100 1,641,515 -65,389 -3.83 212,576 -15.98 0.0358
2024-05-14 2024-03-31 13F STEEL DYNAMICS COM 858119100 1,706,904 -84,488 -4.72 253,014 19.59 0.0437
2024-02-13 2023-12-31 13F STEEL DYNAMICS COM 858119100 1,791,392 -233,586 -11.54 211,563 -2.56 0.0383
2023-11-13 2023-09-30 13F STEEL DYNAMICS COM 858119100 2,024,978 122,507 6.44 217,118 4.77 0.0421
2023-08-11 2023-06-30 13F STEEL DYNAMICS COM 858119100 1,902,471 17,800 0.94 207,236 -2.74 0.0398
2023-05-15 2023-03-31 13F STEEL DYNAMICS COM 858119100 1,884,671 33,690 1.82 213,081 17.83 0.0422
2023-02-13 2022-12-31 13F STEEL DYNAMICS COM 858119100 1,850,981 -51,981 -2.73 180,841 33.94 0.0380
2022-11-14 2022-09-30 13F STEEL DYNAMICS COM 858119100 1,902,962 -25,099 -1.30 135,015 5.86 0.0308
2022-08-12 2022-06-30 13F STEEL DYNAMICS COM 858119100 1,928,061 -102,491 -5.05 127,541 -24.71 0.0273
2022-05-13 2022-03-31 13F STEEL DYNAMICS COM 858119100 2,030,552 -226,265 -10.03 169,409 20.94 0.0298
2022-02-08 2021-12-31 13F STEEL DYNAMICS COM 858119100 2,256,817 129,245 6.07 140,081 12.59 0.0229
2021-11-15 2021-09-30 13F STEEL DYNAMICS COM 858119100 2,127,572 88,095 4.32 124,421 2.36 0.0220
2021-08-13 2021-06-30 13F STEEL DYNAMICS COM 858119100 2,039,477 -188,210 -8.45 121,554 7.50 0.0214
2021-05-12 2021-03-31 13F STEEL DYNAMICS COM 858119100 2,227,687 49,367 2.27 113,078 40.79 0.0210
2021-02-11 2020-12-31 13F STEEL DYNAMICS COM 858119100 2,178,320 -1,252 -0.06 80,315 28.71 0.0156
2020-11-16 2020-09-30 13F STEEL DYNAMICS COM 858119100 2,179,572 -114,924 -5.01 62,401 4.24 0.0137
2020-08-14 2020-06-30 13F STEEL DYNAMICS COM 858119100 2,294,496 -39,730 -1.70 59,864 13.78 0.0142
2020-05-14 2020-03-31 13F STEEL DYNAMICS COM 858119100 2,334,226 87,217 3.88 52,614 -31.21 0.0151
2020-02-14 2019-12-31 13F STEEL DYNAMICS COM 858119100 2,247,009 -264,595 -10.53 76,488 2.19 0.0171
2019-11-13 2019-09-30 13F STEEL DYNAMICS COM 858119100 2,511,604 -16,561 -0.66 74,846 -1.97 0.0179
2019-08-13 2019-06-30 13F STEEL DYNAMICS COM 858119100 2,528,165 -263,697 -9.45 76,349 -22.46 0.0181
2019-05-13 2019-03-31 13F STEEL DYNAMICS COM 858119100 2,791,862 47,372 1.73 98,469 19.44 0.0243
2019-02-12 2018-12-31 13F STEEL DYNAMICS COM 858119100 2,744,490 43,938 1.63 82,444 -32.44 0.0231
2018-11-14 2018-09-30 13F STEEL DYNAMICS COM 858119100 2,700,552 21,067 0.79 122,038 -0.88 0.0299
2018-09-18 2018-06-30 13F/A-1 STEEL DYNAMICS COM 858119100 2,679,485 63,716 2.44 123,123 6.44 0.0313
2018-08-14 2018-06-30 13F STEEL DYNAMICS COM 858119100 2,694,981 79,212 123,835
2018-05-09 2018-03-31 13F STEEL DYNAMICS COM 858119100 2,615,769 29,445 1.14 115,670 3.70 0.0301
2018-02-14 2017-12-31 13F STEEL DYNAMICS COM 858119100 2,586,324 144,706 5.93 111,548 32.54 0.0282
2017-11-13 2017-09-30 13F STEEL DYNAMICS COM 858119100 2,441,618 96,989 4.14 84,163 0.24 0.0219
2017-08-11 2017-06-30 13F STEEL DYNAMICS COM 858119100 2,344,629 268,931 12.96 83,961 16.37 0.0235
2017-05-12 2017-03-31 13F STEEL DYNAMICS COM 858119100 2,075,698 29,035 1.42 72,152 -0.92 0.0208
2017-02-13 2016-12-31 13F STEEL DYNAMICS COM 858119100 2,046,663 129,704 6.77 72,820 52.01 0.0223
2016-11-09 2016-09-30 13F STEEL DYNAMICS COM 858119100 1,916,959 31,043 1.65 47,905 3.68 0.0149
2016-08-12 2016-06-30 13F STEEL DYNAMICS COM 858119100 1,885,916 53,540 2.92 46,205 12.29 0.0150
2016-08-19 2016-03-31 13F/A-1 STEEL DYNAMICS COM 858119100 1,832,376 24,185 1.34 41,147 27.35 0.0136
2016-05-13 2016-03-31 13F Steel Dynamics COMM 858119100 1,832,376 41,248
2016-02-12 2015-12-31 13F Steel Dynamics COMM 858119100 1,808,191 -40,339 -2.18 32,311 1.74 0.0107
2015-11-12 2015-09-30 13F Steel Dynamics COMM 858119100 1,848,530 1,848,530 0.00 31,757 0.0106
2015-08-13 2015-06-30 13F Steel Dynamics COMM 858119100 0 -2,306,688 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Steel Dynamics COMM 858119100 2,306,688 -131,151 -5.38 46,364 -3.66 0.0139
2015-02-12 2014-12-31 13F Steel Dynamics COM 858119100 2,437,839 8,889 0.37 48,124 -12.37 0.0145
2014-11-13 2014-09-30 13F Steel Dynamics COMM 858119100 2,428,950 125,136 5.43 54,919 32.81 0.0172
2014-08-14 2014-06-30 13F STEEL DYNAMICS com 858119100 2,303,814 106,755 4.86 41,353 5.80 0.0129
2014-05-14 2014-03-31 13F STEEL DYNAMICS COMM 858119100 2,197,059 -3,082 -0.14 39,086 -9.08 0.0123
2014-02-21 2013-12-31 13F/A-1 STEEL DYNAMICS COM 858119100 2,200,141 68,918 3.23 42,990 20.64 0.0138
2014-02-12 2013-12-31 13F STEEL DYNAMICS COM 858119100 2,200,141 42,990
2013-11-13 2013-09-30 13F STEEL DYNAMICS COM 858119100 2,131,223 63,613 3.08 35,634 15.59 0.0126
2013-08-09 2013-06-30 13F STEEL DYNAMICS COM 858119100 2,067,610 2,067,610 30,828 0.0112
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.