Steel Dynamics, Inc.
US ˙ NasdaqGS ˙ US8581191009

SecuritySTLD / Steel Dynamics, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership1,838 shares
Latest Disclosed Value $ 311,544
Parallel Advisors, LLC ownership in STLD / Steel Dynamics, Inc.

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 1,838 shares of Steel Dynamics, Inc. (US:STLD) valued at $311,449 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 1,705 shares of Steel Dynamics, Inc.. This represents a change in shares of 7.80% during the quarter. The current value of the position is $505,689 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (STLD) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

STLD / Steel Dynamics, Inc. Historical Put/Call Ratio
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)
2026-02-11 2025-12-31 13F STEEL DYNAMICS Stock 858119100 1,838 133 7.80 312 31.22 0.0057
2025-11-13 2025-09-30 13F STEEL DYNAMICS Stock 858119100 1,705 29 1.73 238 10.75 0.0044
2025-07-08 2025-06-30 13F STEEL DYNAMICS Stock 858119100 1,676 -58 -3.34 214 -0.93 0.0043
2025-04-08 2025-03-31 13F STEEL DYNAMICS Stock 858119100 1,734 102 6.25 217 16.13 0.0049
2025-02-10 2024-12-31 13F STEEL DYNAMICS Stock 858119100 1,632 127 8.44 186 -1.59 0.0042
2024-11-13 2024-09-30 13F STEEL DYNAMICS Stock 858119100 1,505 457 43.61 190 40.00 0.0045
2024-08-08 2024-06-30 13F STEEL DYNAMICS Stock 858119100 1,048 20 1.95 136 -11.18 0.0035
2024-05-06 2024-03-31 13F STEEL DYNAMICS Stock 858119100 1,028 139 15.64 152 46.15 0.0041
2024-02-12 2023-12-31 13F STEEL DYNAMICS Stock 858119100 889 134 17.75 105 28.40 0.0031
2024-05-20 2023-09-30 13F/A-1 STEEL DYNAMICS Stock 858119100 755 80 11.85 81 10.96 0.0027
2023-11-14 2023-09-30 13F STEEL DYNAMICS Stock 858119100 755 80 81 0.0027
2024-05-20 2023-06-30 13F/A-1 STEEL DYNAMICS Stock 858119100 675 -46 -6.38 74 -9.88 0.0024
2023-08-04 2023-06-30 13F STEEL DYNAMICS Stock 858119100 675 -46 74 0.0024
2024-05-20 2023-03-31 13F/A-1 STEEL DYNAMICS Stock 858119100 721 74 11.44 82 28.57 0.0028
2023-04-25 2023-03-31 13F STEEL DYNAMICS Stock 858119100 721 74 82 0.0028
2023-02-06 2022-12-31 13F STEEL DYNAMICS Stock 858119100 647 -90 -12.21 63 21.15 0.0027
2022-11-10 2022-09-30 13F STEEL DYNAMICS Stock 858119100 737 -110 -12.99 52 -7.14 0.0024
2022-08-01 2022-06-30 13F STEEL DYNAMICS Stock 858119100 847 14 1.68 56 -20.00 0.0026
2022-04-28 2022-03-31 13F STEEL DYNAMICS Stock 858119100 833 30 3.74 70 40.00 0.0028
2022-01-20 2021-12-31 13F STEEL DYNAMICS Stock 858119100 803 83 11.53 50 19.05 0.0019
2021-11-02 2021-09-30 13F/A-1 STEEL DYNAMICS Stock 858119100 720 114 18.81 42 16.67 0.0017
2021-08-06 2021-06-30 13F STEEL DYNAMICS Stock 858119100 606 178 41.59 36 63.64 0.0015
2021-04-23 2021-03-31 13F STEEL DYNAMICS Stock 858119100 428 22 5.42 22 46.67 0.0010
2021-02-02 2020-12-31 13F STEEL DYNAMICS Stock 858119100 406 -85 -17.31 15 7.14 0.0008
2020-10-27 2020-09-30 13F STEEL DYNAMICS Stock 858119100 491 -185 -27.37 14 -17.65 0.0009
2020-07-16 2020-06-30 13F STEEL DYNAMICS Stock 858119100 676 490 263.44 17 325.00 0.0011
2020-04-27 2020-03-31 13F STEEL DYNAMICS Stock 858119100 186 -880 -82.55 4 -88.89 0.0003
2020-01-30 2019-12-31 13F STEEL DYNAMICS Stock 858119100 1,066 45 4.41 36 20.00 0.0027
2019-11-01 2019-09-30 13F STEEL DYNAMICS Stock 858119100 1,021 205 25.12 30 20.00 0.0026
2019-08-05 2019-06-30 13F STEEL DYNAMICS Stock 858119100 816 53 6.95 25 -7.41 0.0024
2019-05-01 2019-03-31 13F STEEL DYNAMICS Stock 858119100 763 763 27 0.0030
2019-02-05 2018-12-31 13F STEEL DYNAMICS Stock 858119100 0 -257 -100.00 0 -100.00
2018-11-01 2018-09-30 13F STEEL DYNAMICS Stock 858119100 257 0 0.00 12 9.09 0.0015
2018-07-30 2018-06-30 13F STEEL DYNAMICS Stock 858119100 257 21 8.90 11 10.00 0.0016
2018-05-08 2018-03-31 13F STEEL DYNAMICS Stock 858119100 236 0 0.00 10 0.00 0.0016
2018-02-13 2017-12-31 13F STEEL DYNAMICS INC COM Stock 858119100 236 0 0.00 10 11.11 0.0016
2017-11-15 2017-09-30 13F/A-1 STEEL DYNAMICS INC COM Stock 858119100 236 60 34.09 9 50.00 0.0015
2017-08-07 2017-06-30 13F STEEL DYNAMICS INC COM Stock 858119100 176 176 6 0.0011
2017-05-12 2017-03-31 13F/A-1 STEEL DYNAMICS INC COM Stock 858119100 0 -125 -100.00 0 -100.00
2017-02-14 2016-12-31 13F STEEL DYNAMICS INC COM Stock 858119100 125 125 4 0.0009
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-01-19 2021-12-31 13F STEEL DYNAMICS Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F STEEL DYNAMICS Stock Call 606 36 n/a n/a n/a
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.