Steel Dynamics, Inc.
Steel Dynamics, Inc. (STLD) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · STLD · as of Sep 30, 2025
Ownership Breakdown
839
Institutional Holders
▼ 11 vs Q2
$15.48B
Total Inst. Value
▲ $303.75M vs Q2
144.21M
Shares Outstanding
freeFloat 93.23%
111.11M
13F Shares Held
▼ 7.39M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
STLD largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC steel works, blast furnaces & rolling mills (coke ovens) | 17.16M | 11.49% | 11.49% | $2.39T | Nov 7, 2025 | ▼ 124.4K |
BLACKROCK, INC. steel works, blast furnaces & rolling mills (coke ovens) | 12.16M | 8.15% | 8.15% | $1.70T | Nov 12, 2025 | ▼ 36.0K |
STATE STREET CORP steel works, blast furnaces & rolling mills (coke ovens) | 7.31M | 4.90% | 4.90% | $1.02T | Nov 14, 2025 | ▲ 10.3K |
GEODE CAPITAL MANAGEMENT, LLC steel works, blast furnaces & rolling mills (coke ovens) | 3.69M | 2.47% | 2.47% | $512.17B | Nov 12, 2025 | ▲ 43.8K |
CAPITAL RESEARCH GLOBAL INVESTORS steel works, blast furnaces & rolling mills (coke ovens) | 3.61M | 2.42% | 2.42% | $503.77B | Nov 13, 2025 | ▲ 8.5K |
MORGAN STANLEY steel works, blast furnaces & rolling mills (coke ovens) | 3.47M | 2.32% | 2.32% | $483.18B | May 27, 2026 | ▲ 341.1K |
PRICE T ROWE ASSOCIATES INC /MD/ steel works, blast furnaces & rolling mills (coke ovens) | 3.32M | 2.23% | 2.23% | $463.51B | Nov 14, 2025 | ▼ 3.59M |
NORDEA INVESTMENT MANAGEMENT AB steel works, blast furnaces & rolling mills (coke ovens) | 2.34M | 1.57% | 1.57% | $322.52B | Oct 27, 2025 | ▲ 252.1K |
HOLOCENE ADVISORS, LP steel works, blast furnaces & rolling mills (coke ovens) | 2.31M | 1.54% | 1.54% | $321.48B | Nov 14, 2025 | ▼ 200.4K |
DIMENSIONAL FUND ADVISORS LP steel works, blast furnaces & rolling mills (coke ovens) | 2.23M | 1.49% | 1.49% | $310.82B | Nov 12, 2025 | ▼ 225.3K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+3.63M shares2
New Positions
first time holders22
Decreased
−6.45M shares0
Sold Out
fully exitedNet shares change (top 50)
2.81M
+3.63M / −6.45M
Net new holders
+5
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
STLD insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
17
Buy transactions
11
Sell transactions
1.55
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Seaman Bradley S director | Jun 1, 2026 | Award | 712 | — | — | 51.5K | Form 4 ↗ |
Hamann Jennifer L director | Jun 1, 2026 | Award | 712 | — | — | 5.3K | Form 4 ↗ |
DOLAN TRACI M director | Jun 1, 2026 | Award | 712 | — | — | 58.9K | Form 4 ↗ |
Cornew Kenneth W. director | Jun 1, 2026 | Award | 712 | — | — | 32.0K | Form 4 ↗ |
BARGABOS SHEREE L director | Jun 1, 2026 | Award | 712 | — | — | 27.1K | Form 4 ↗ |
Sierra Luis Manuel director | Jun 1, 2026 | Award | 712 | — | — | 11.5K | Form 4 ↗ |
Graham Christopher A Senior Vice President | May 13, 2026 | Sale | 2,999 | $236.52 | $709.3K | 74.7K | Form 4 ↗ |
Graham Christopher A Senior Vice President | May 13, 2026 | Sale | 3,000 | $237.01 | $711.0K | 71.7K | Form 4 ↗ |
Graham Christopher A Senior Vice President | May 13, 2026 | Sale | 3,001 | $236.90 | $710.9K | 68.7K | Form 4 ↗ |
Poinsatte Richard A Senior Vice President | May 14, 2026 | Gift | 200 | — | — | 28.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Steel Dynamics, Inc. (STLD) is primarily owned by institutional investors, who hold approximately 77.0% of total shares outstanding. Company insiders own approximately 6.77%, while retail and public investors account for the remaining 16.19%.
The largest institutional shareholder of Steel Dynamics, Inc. is VANGUARD GROUP INC, holding approximately 17.16 million shares — equal to 11.49% of outstanding shares — as of September 30, 2025.
A total of 839 institutional investors currently hold STLD stock, with a combined institutional value of approximately $15.48 billion as of the most recent 13F filing period.
Frequently asked questions
STLD ownershipSteel Dynamics, Inc. (STLD) is primarily owned by institutional investors, who hold approximately 77.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 11.49% stake. Company insiders hold 6.77%. Data sourced from SEC Form 13F as of September 30, 2025.