스틸 다이나믹스, Inc.
MX ˙ BMV ˙ US8581191009
SecurityMX:STLD / Steel Dynamics, Inc.
InstitutionAustralianSuper Pty Ltd
Latest Disclosed Ownership406,945 shares
Latest Disclosed Value $ 73,250,100
AustralianSuper Pty Ltd reports 2,804.26% increase in ownership of STLD / Steel Dynamics, Inc.

On May 7, 2026 - AustralianSuper Pty Ltd filed a 13F-HR form disclosing ownership of 406,945 shares of Steel Dynamics, Inc. (MX:STLD) valued at $73,250,100 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 14,012 shares of Steel Dynamics, Inc.. This represents a change in shares of 2,804.26% 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)
2026-05-07 2026-03-31 13F STEEL DYNAMICS COM 858119100 406,945 392,933 2,804.26 73,250 2,985.51 0.3818
2026-02-05 2025-12-31 13F STEEL DYNAMICS COM 858119100 14,012 0 0.00 2,374 21.56 0.0110
2025-11-12 2025-09-30 13F/A-1 STEEL DYNAMICS COM 858119100 14,012 -186,699 -93.02 1,954 -92.40 0.0092
2025-11-03 2025-09-30 13F STEEL DYNAMICS COM 858119100 14,012 -186,699 1,954 0.0090
2025-08-01 2025-06-30 13F STEEL DYNAMICS COM 858119100 200,711 -59,183 -22.77 25,693 -20.96 0.1301
2025-05-05 2025-03-31 13F STEEL DYNAMICS COM 858119100 259,894 -268,763 -50.84 32,508 -46.09 0.1837
2025-01-30 2024-12-31 13F STEEL DYNAMICS COM 858119100 528,657 -52,897 -9.10 60,304 -17.76 0.2845
2024-10-28 2024-09-30 13F STEEL DYNAMICS COM 858119100 581,554 -10,701 -1.81 73,322 -4.40 0.3655
2024-07-26 2024-06-30 13F STEEL DYNAMICS COM 858119100 592,255 10,701 1.84 76,697 -11.64 0.4420
2024-04-26 2024-03-31 13F STEEL DYNAMICS COM 858119100 581,554 66,666 12.95 86,803 42.75 0.5079
2024-01-16 2023-12-31 13F STEEL DYNAMICS COM 858119100 514,888 59,668 13.11 60,808 24.59 0.3651
2023-10-27 2023-09-30 13F STEEL DYNAMICS COM 858119100 455,220 6,532 1.46 48,809 -0.14 0.3162
2023-07-28 2023-06-30 13F STEEL DYNAMICS COM 858119100 448,688 54,311 13.77 48,876 9.61 0.3099
2023-04-21 2023-03-31 13F STEEL DYNAMICS COM 858119100 394,377 394 0.10 44,588 18.92 0.2715
2023-02-01 2022-12-31 13F STEEL DYNAMICS COM 858119100 393,983 -79,056 -16.71 37,495 11.72 0.2494
2022-11-14 2022-09-30 13F STEEL DYNAMICS COM 858119100 473,039 31,875 7.23 33,562 15.01 0.2388
2022-07-13 2022-06-30 13F STEEL DYNAMICS COM 858119100 441,164 66,971 17.90 29,183 -6.52 0.1800
2022-04-29 2022-03-31 13F STEEL DYNAMICS COM 858119100 374,193 17,465 4.90 31,219 37.78 0.1696
2022-01-24 2021-12-31 13F STEEL DYNAMICS COM 858119100 356,728 48,865 15.87 22,659 25.86 0.1176
2021-11-12 2021-09-30 13F STEEL DYNAMICS COM 858119100 307,863 35,679 13.11 18,004 10.99 0.1155
2021-08-12 2021-06-30 13F STEEL DYNAMICS COM 858119100 272,184 -52,722 -16.23 16,222 -1.64 0.1132
2021-05-14 2021-03-31 13F STEEL DYNAMICS COM 858119100 324,906 213,410 191.41 16,492 301.17 0.1290
2021-02-11 2020-12-31 13F STEEL DYNAMICS COM 858119100 111,496 -30,271 -21.35 4,111 1.28 0.0308
2020-11-16 2020-09-30 13F STEEL DYNAMICS COM 858119100 141,767 -88 -0.06 4,059 9.67 0.0347
2020-08-13 2020-06-30 13F STEEL DYNAMICS COM 858119100 141,855 -44,951 -24.06 3,701 -12.11 0.0359
2020-05-13 2020-03-31 13F STEEL DYNAMICS COM 858119100 186,806 -247,190 -56.96 4,211 -71.50 0.0539
2020-02-10 2019-12-31 13F STEEL DYNAMICS COM 858119100 433,996 -12,317 -2.76 14,773 11.08 0.1246
2019-11-08 2019-09-30 13F STEEL DYNAMICS COM 858119100 446,313 75,385 20.32 13,300 18.73 0.1258
2019-08-13 2019-06-30 13F STEEL DYNAMICS COM 858119100 370,928 63,943 20.83 11,202 3.46 0.1077
2019-05-14 2019-03-31 13F STEEL DYNAMICS COM 858119100 306,985 253,150 470.23 10,827 569.57 0.1131
2019-02-06 2018-12-31 13F STEEL DYNAMICS COM 858119100 53,835 53,835 1,617 0.0252
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.