Steel Dynamics, Inc.
US ˙ NasdaqGS ˙ US8581191009

SecuritySTLD / Steel Dynamics, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership30,986 shares
Latest Disclosed Value $ 5,577
Amalgamated Bank reports 7.15% increase in ownership of STLD / Steel Dynamics, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 30,986 shares of Steel Dynamics, Inc. (US:STLD) valued at $5,577,480 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 28,918 shares of Steel Dynamics, Inc.. This represents a change in shares of 7.15% during the quarter. The current value of the position is $8,525,178 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.

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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)
2026-05-08 2026-03-31 13F STEEL DYNAMICS COM 858119100 30,986 2,068 7.15 6 25.00 0.0427
2026-02-05 2025-12-31 13F STEEL DYNAMICS COM 858119100 28,918 1,918 7.10 5 33.33 0.0354
2025-10-29 2025-09-30 13F STEEL DYNAMICS COM 858119100 27,000 -354 -1.29 4 0.00 0.0269
2025-08-04 2025-06-30 13F STEEL DYNAMICS COM 858119100 27,354 -273 -0.99 4 0.00 0.0270
2025-04-25 2025-03-31 13F STEEL DYNAMICS COM 858119100 27,627 224 0.82 3 0.00 0.0296
2025-02-04 2024-12-31 13F STEEL DYNAMICS COM 858119100 27,403 -1,099 -3.86 3 0.00 0.0257
2024-10-30 2024-09-30 13F STEEL DYNAMICS COM 858119100 28,502 -17,272 -37.73 4 -40.00 0.0296
2024-08-12 2024-06-30 13F STEEL DYNAMICS COM 858119100 45,774 -3,803 -7.67 6 -28.57 0.0505
2024-04-23 2024-03-31 13F STEEL DYNAMICS COM 858119100 49,577 4,946 11.08 7 40.00 0.0628
2024-02-06 2023-12-31 13F STEEL DYNAMICS COM 858119100 44,631 -16,107 -26.52 5 -16.67 0.0421
2023-11-08 2023-09-30 13F STEEL DYNAMICS COM 858119100 60,738 18,100 42.45 7 50.00 0.0554
2023-08-11 2023-06-30 13F STEEL DYNAMICS COM 858119100 42,638 -12,768 -23.04 5 -33.33 0.0376
2023-05-02 2023-03-31 13F STEEL DYNAMICS COM 858119100 55,406 -25,733 -31.71 6 -14.29 0.0534
2023-02-10 2022-12-31 13F STEEL DYNAMICS COM 858119100 81,139 -46,238 -36.30 8 -99.92 0.0707
2022-11-09 2022-09-30 13F STEEL DYNAMICS COM 858119100 127,377 -15,979 -11.15 9,037 -4.70 0.0872
2022-08-15 2022-06-30 13F STEEL DYNAMICS COM 858119100 143,356 10,349 7.78 9,483 -14.54 0.0884
2022-08-25 2022-03-31 13F/A-1 STEEL DYNAMICS COM 858119100 133,007 -3,851 -2.81 11,097 30.63 0.0862
2022-06-30 2022-03-31 13F STEEL DYNAMICS COM 858119100 133,007 -3,851 11,097 0.0881
2022-02-15 2021-12-31 13F/A-1 STEEL DYNAMICS COM 858119100 136,858 -27,114 -16.54 8,495 -11.41 0.0627
2022-02-15 2021-12-31 13F STEEL DYNAMICS COM 858119100 136,858 -27,114 8,495 0.0627
2021-10-29 2021-09-30 13F STEEL DYNAMICS COM 858119100 163,972 -19,599 -10.68 9,589 -12.36 0.0810
2021-08-16 2021-06-30 13F STEEL DYNAMICS COM 858119100 183,571 158,560 633.96 10,941 761.50 0.0877
2021-05-13 2021-03-31 13F STEEL DYNAMICS COM 858119100 25,011 -1,659 -6.22 1,270 29.20 0.0476
2021-02-12 2020-12-31 13F STEEL DYNAMICS COM 858119100 26,670 68 0.26 983 29.00 0.0373
2020-10-30 2020-09-30 13F STEEL DYNAMICS COM 858119100 26,602 -480 -1.77 762 7.78 0.0331
2020-08-10 2020-06-30 13F STEEL DYNAMICS COM 858119100 27,082 -19,754 -42.18 707 -33.05 0.0327
2020-05-13 2020-03-31 13F STEEL DYNAMICS COM 858119100 46,836 -1,204 -2.51 1,056 -35.41 0.0258
2020-02-13 2019-12-31 13F STEEL DYNAMICS COM 858119100 48,040 3,994 9.07 1,635 24.52 0.0301
2019-11-13 2019-09-30 13F STEEL DYNAMICS COM 858119100 44,046 -756 -1.69 1,313 -2.96 0.0276
2019-08-14 2019-06-30 13F STEEL DYNAMICS COM 858119100 44,802 -1,498 -3.24 1,353 -17.15 0.0316
2019-05-15 2019-03-31 13F STEEL DYNAMICS COM 858119100 46,300 895 1.97 1,633 19.72 0.0396
2019-02-15 2018-12-31 13F STEEL DYNAMICS COM 858119100 45,405 2,111 4.88 1,364 -30.27 0.0386
2018-11-14 2018-09-30 13F STEEL DYNAMICS COM 858119100 43,294 -3,605 -7.69 1,956 -9.23 0.0484
2018-07-18 2018-06-30 13F STEEL DYNAMICS COM 858119100 46,899 428 0.92 2,155 4.87 0.0527
2018-05-22 2018-03-31 13F STEEL DYNAMICS COM 858119100 46,471 82 0.18 2,055 2.70 0.0545
2018-02-13 2017-12-31 13F STEEL DYNAMICS COM 858119100 46,389 1,682 3.76 2,001 29.85 0.0541
2017-11-09 2017-09-30 13F STEEL DYNAMICS COM 858119100 44,707 -1,190 -2.59 1,541 -6.27 0.0480
2017-08-10 2017-06-30 13F STEEL DYNAMICS COM 858119100 45,897 8,470 22.63 1,644 26.36 0.0539
2017-05-12 2017-03-31 13F STEEL DYNAMICS COM 858119100 37,427 -188 -0.50 1,301 -2.77 0.0648
2017-02-14 2016-12-31 13F STEEL DYNAMICS COM 858119100 37,615 4,246 12.72 1,338 60.43 0.0605
2016-11-15 2016-09-30 13F/A-1 STEEL DYNAMICS COM 858119100 33,369 -1 -0.00 834 -2.57 0.0484
2016-08-16 2016-06-30 13F STEEL DYNAMICS COM 858119100 33,370 4,067 13.88 856 29.70 0.0495
2016-05-11 2016-03-31 13F STEEL DYNAMICS COM 858119100 29,303 2,489 9.28 660 37.79 0.0643
2016-02-10 2015-12-31 13F STEEL DYNAMICS COM 858119100 26,814 -1,781 -6.23 479 -2.44 0.0591
2015-11-04 2015-09-30 13F STEEL DYNAMICS COM 858119100 28,595 298 1.05 491 -16.21 0.0515
2015-07-10 2015-06-30 13F STEEL DYNAMICS COM 858119100 28,297 28,297 586 0.0576
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.