Steel Dynamics, Inc.
US ˙ NasdaqGS ˙ US8581191009

SecuritySTLD / Steel Dynamics, Inc.
InstitutionAmundi
Latest Disclosed Ownership331,826 shares
Latest Disclosed Value $ 59,728,680
Amundi reports 36.05% increase in ownership of STLD / Steel Dynamics, Inc.

On May 15, 2026 - Amundi filed a 13F-HR form disclosing ownership of 331,826 shares of Steel Dynamics, Inc. (US:STLD) valued at $59,728,680 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 243,900 shares of Steel Dynamics, Inc.. This represents a change in shares of 36.05% during the quarter. The current value of the position is $91,295,287 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)
2026-05-15 2026-03-31 13F STEEL DYNAMICS COM 858119100 331,826 87,926 36.05 59,729 44.52 0.0069
2026-02-17 2025-12-31 13F STEEL DYNAMICS COM 858119100 243,900 -15,113 -5.83 41,329 12.66 0.0112
2025-11-14 2025-09-30 13F STEEL DYNAMICS COM 858119100 259,013 -67,922 -20.78 36,684 -16.30 0.0118
2025-08-13 2025-06-30 13F STEEL DYNAMICS COM 858119100 326,935 -17,234 -5.01 43,829 9.72 0.0151
2025-05-15 2025-03-31 13F STEEL DYNAMICS COM 858119100 344,169 -10,951 -3.08 39,944 -3.43 0.0145
2025-02-07 2024-12-31 13F STEEL DYNAMICS COM 858119100 355,120 -8,168 -2.25 41,364 -10.37 0.0144
2024-11-13 2024-09-30 13F STEEL DYNAMICS COM 858119100 363,288 -15,648 -4.13 46,148 -4.21 0.0170
2024-08-14 2024-06-30 13F STEEL DYNAMICS COM 858119100 378,936 13,469 3.69 48,174 -3.13 0.0185
2024-05-15 2024-03-31 13F STEEL DYNAMICS COM 858119100 365,467 -128,757 -26.05 49,729 -10.96 0.0214
2024-02-14 2023-12-31 13F STEEL DYNAMICS COM 858119100 494,224 -8,827 -1.75 55,852 4.83 0.0251
2023-11-14 2023-09-30 13F STEEL DYNAMICS COM 858119100 503,051 11,516 2.34 53,278 -2.16 0.0262
2023-08-14 2023-06-30 13F STEEL DYNAMICS COM 858119100 491,535 -4,189 -0.85 54,452 6.42 0.0275
2023-05-15 2023-03-31 13F STEEL DYNAMICS COM 858119100 495,724 105,667 27.09 51,169 19.26 0.0276
2023-02-14 2022-12-31 13F STEEL DYNAMICS COM 858119100 390,057 -15,581 -3.84 42,906 35.91 0.0235
2022-11-14 2022-09-30 13F STEEL DYNAMICS COM 858119100 405,638 96,611 31.26 31,570 54.94 0.0187
2022-09-02 2022-06-30 13F/A-1 STEEL DYNAMICS COM 858119100 309,027 40,779 15.20 20,375 -9.18 0.0163
2022-08-15 2022-06-30 13F STEEL DYNAMICS COM 858119100 309,027 40,779 20,375 0.0011
2022-05-16 2022-03-31 13F STEEL DYNAMICS COM 858119100 268,248 -173,806 -39.32 22,435 -19.21 0.0152
2022-02-14 2021-12-31 13F STEEL DYNAMICS COM 858119100 442,054 9,994 2.31 27,770 9.90 0.0176
2021-11-15 2021-09-30 13F STEEL DYNAMICS COM 858119100 432,060 32,995 8.27 25,268 109,760.87 0.0177
2021-08-16 2021-06-30 13F STEEL DYNAMICS COM 858119100 399,065 399,065 24 0.0165
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.