鋼鐵動力公司
MX ˙ BMV ˙ US8581191009
SecurityMX:STLD / Steel Dynamics, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership363,309 shares
Latest Disclosed Value $ 61,562,710
Alliancebernstein L.p. reports 5.50% decrease in ownership of STLD / Steel Dynamics, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 363,309 shares of Steel Dynamics, Inc. (MX:STLD) valued at $61,562,710 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 384,439 shares of Steel Dynamics, Inc.. This represents a change in shares of -5.50% 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)
2026-05-15 2026-03-31 13F STEEL DYNAMICS COM 858119100 363,309 -21,130 -5.50 61,563 -5.50 0.0199
2026-02-17 2025-12-31 13F STEEL DYNAMICS COM 858119100 384,439 -37,265 -8.84 65,143 10.79 0.0206
2025-11-14 2025-09-30 13F STEEL DYNAMICS COM 858119100 421,704 -35,336 -7.73 58,798 0.50 0.0185
2025-08-14 2025-06-30 13F STEEL DYNAMICS COM 858119100 457,040 -19,303 -4.05 58,506 -1.80 0.0191
2025-05-15 2025-03-31 13F STEEL DYNAMICS COM 858119100 476,343 -78,209 -14.10 59,581 -5.81 0.0216
2025-02-12 2024-12-31 13F STEEL DYNAMICS COM 858119100 554,552 -99,447 -15.21 63,258 -23.28 0.0215
2024-11-14 2024-09-30 13F STEEL DYNAMICS COM 858119100 653,999 43,158 7.07 82,456 4.24 0.0277
2024-08-14 2024-06-30 13F STEEL DYNAMICS COM 858119100 610,841 198,853 48.27 79,104 29.53 0.0276
2024-05-14 2024-03-31 13F STEEL DYNAMICS COM 858119100 411,988 194,115 89.10 61,069 137.34 0.0216
2024-02-14 2023-12-31 13F STEEL DYNAMICS COM 858119100 217,873 -99,434 -31.34 25,731 -24.37 0.0099
2023-11-14 2023-09-30 13F STEEL DYNAMICS COM 858119100 317,307 52,782 19.95 34,022 18.07 0.0145
2023-08-15 2023-06-30 13F STEEL DYNAMICS COM 858119100 264,525 14,520 5.81 28,815 1.94 0.0118
2023-05-15 2023-03-31 13F STEEL DYNAMICS COM 858119100 250,005 10,123 4.22 28,266 20.61 0.0121
2023-02-15 2022-12-31 13F STEEL DYNAMICS COM 858119100 239,882 -289,807 -54.71 23,436 -37.64 0.0105
2022-11-15 2022-09-30 13F STEEL DYNAMICS COM 858119100 529,689 -49,383 -8.53 37,581 -1.89 0.0182
2022-08-15 2022-06-30 13F STEEL DYNAMICS COM 858119100 579,072 -347,684 -37.52 38,306 -50.46 0.0175
2022-05-13 2022-03-31 13F STEEL DYNAMICS COM 858119100 926,756 130,710 16.42 77,319 56.48 0.0298
2022-02-14 2021-12-31 13F STEEL DYNAMICS COM 858119100 796,046 -10,513 -1.30 49,411 4.76 0.0175
2021-11-10 2021-09-30 13F STEEL DYNAMICS COM 858119100 806,559 1,750 0.22 47,168 -1.67 0.0186
2021-07-30 2021-06-30 13F STEEL DYNAMICS COM 858119100 804,809 -269,521 -25.09 47,967 -12.04 0.0193
2021-05-06 2021-03-31 13F STEEL DYNAMICS COM 858119100 1,074,330 212,985 24.73 54,533 71.71 0.0239
2021-02-08 2020-12-31 13F STEEL DYNAMICS COM 858119100 861,345 446,958 107.86 31,758 167.68 0.0150
2020-11-12 2020-09-30 13F STEEL DYNAMICS COM 858119100 414,387 38,766 10.32 11,864 21.06 0.0064
2020-08-13 2020-06-30 13F STEEL DYNAMICS COM 858119100 375,621 740 0.20 9,800 15.98 0.0058
2020-05-14 2020-03-31 13F STEEL DYNAMICS COM 858119100 374,881 -4,630 -1.22 8,450 -34.59 0.0061
2020-02-18 2019-12-31 13F STEEL DYNAMICS COM 858119100 379,511 -8,660 -2.23 12,919 11.69 0.0073
2019-11-14 2019-09-30 13F STEEL DYNAMICS COM 858119100 388,171 -9,161 -2.31 11,567 -3.60 0.0072
2019-08-14 2019-06-30 13F STEEL DYNAMICS COM 858119100 397,332 -51,729 -11.52 11,999 -24.24 0.0075
2019-05-14 2019-03-31 13F STEEL DYNAMICS COM 858119100 449,061 -7,458 -1.63 15,838 15.49 0.0103
2019-02-13 2018-12-31 13F STEEL DYNAMICS COM 858119100 456,519 277,003 154.31 13,714 69.06 0.0102
2018-11-08 2018-09-30 13F STEEL DYNAMICS COM 858119100 179,516 -51,036 -22.14 8,112 -23.43 0.0053
2018-08-13 2018-06-30 13F STEEL DYNAMICS COM 858119100 230,552 64,080 38.49 10,594 43.92 0.0074
2018-05-14 2018-03-31 13F STEEL DYNAMICS COM 858119100 166,472 -3,294 -1.94 7,361 0.53 0.0053
2018-02-13 2017-12-31 13F STEEL DYNAMICS COM 858119100 169,766 -8,912 -4.99 7,322 18.88 0.0052
2017-11-13 2017-09-30 13F STEEL DYNAMICS COM 858119100 178,678 -94,338 -34.55 6,159 -37.01 0.0046
2017-08-10 2017-06-30 13F STEEL DYNAMICS COM 858119100 273,016 27,644 11.27 9,777 14.63 0.0076
2017-05-11 2017-03-31 13F STEEL DYNAMICS COM 858119100 245,372 -16,690 -6.37 8,529 -8.53 0.0068
2017-02-13 2016-12-31 13F STEEL DYNAMICS COM 858119100 262,062 -27,278 -9.43 9,324 28.94 0.0078
2016-11-10 2016-09-30 13F STEEL DYNAMICS COM 858119100 289,340 76,080 35.67 7,231 38.39 0.0061
2016-08-11 2016-06-30 13F STEEL DYNAMICS COM 858119100 213,260 -2,064,448 -90.64 5,225 -89.81 0.0045
2016-05-13 2016-03-31 13F STEEL DYNAMICS COM 858119100 2,277,708 -3,853 -0.17 51,271 25.75 0.0436
2016-02-16 2015-12-31 13F/A-1 STEEL DYNAMICS COM 858119100 2,281,561 950 0.04 40,771 4.06 0.0347
2016-02-12 2015-12-31 13F STEEL DYNAMICS COM 858119100 2,281,561 39,197
2015-11-13 2015-09-30 13F STEEL DYNAMICS COM 858119100 2,280,611 -77,309 -3.28 39,181 -19.78 0.0336
2015-08-14 2015-06-30 13F STEEL DYNAMICS COM 858119100 2,357,920 90,547 3.99 48,844 7.18 0.0404
2015-05-13 2015-03-31 13F STEEL DYNAMICS COM 858119100 2,267,373 -30,190 -1.31 45,574 0.49 0.0369
2015-02-13 2014-12-31 13F STEEL DYNAMICS COM 858119100 2,297,563 -691,096 -23.12 45,354 -32.88 0.0377
2014-11-13 2014-09-30 13F STEEL DYNAMICS COM 858119100 2,988,659 -755,610 -20.18 67,574 0.54 0.0569
2014-08-13 2014-06-30 13F STEEL DYNAMICS COM 858119100 3,744,269 174,098 4.88 67,210 5.82 0.0566
2014-05-13 2014-03-31 13F STEEL DYNAMICS COM 858119100 3,570,171 -186,543 -4.97 63,513 -13.48 0.0549
2014-02-13 2013-12-31 13F STEEL DYNAMICS COM 858119100 3,756,714 5,352 0.14 73,406 17.10 0.0656
2013-11-14 2013-09-30 13F STEEL DYNAMICS COM 858119100 3,751,362 9,106 0.24 62,685 12.34 0.0619
2013-08-13 2013-06-30 13F STEEL DYNAMICS COM 858119100 3,742,256 3,742,256 55,797 0.0592
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.