Supply breakdown
Shares as of Oct 21, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 142.22M | 100.0% | $32.63B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | - | - | - | Unavailable |
| Other restricted (unlisted classes only) | - | - | - | Unavailable |
| Total outstanding | 142.22M | 100.0% | $32.63B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F) | 119.08M | 83.7% | $27.32B | Estimated |
| Insider-held, all (Forms 3, 4, 5) | - | - | - | Unavailable |
Institutional and insider holdings can include both tradable and locked shares, so they are shown for reference and never added to the total. Check: no class has more shares deducted than it has outstanding, and the review found no shares that may be counted twice: reconciles.
Valuation
- Traditional$32.63B
- Fully diluted$32.78B
- Circulating$32.63B
- Free float-
- Locked team value$0
- Other restricted value$0
Locked and restricted shares
Not reviewed yet.
Institutional holders
13F, quarter ended Jun 30, 2026| Holder | Shares | % of total |
|---|---|---|
| BlackRock, Inc. | 12.40M | 8.72% |
| VANGUARD CAPITAL MANAGEMENT LLC | 8.90M | 6.26% |
| FMR LLC | 7.72M | 5.43% |
| STATE STREET CORP | 7.38M | 5.19% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.76M | 4.75% |
| GEODE CAPITAL MANAGEMENT, LLC | 3.78M | 2.66% |
| Capital Research Global Investors | 3.64M | 2.56% |
| MORGAN STANLEY | 3.35M | 2.35% |
| NORGES BANK | 2.48M | 1.74% |
| Life Cycle Investment Partners Ltd | 2.30M | 1.62% |
Sum of long share positions in Form 13F reports for the quarter. 13F covers managers with over $100M in US equities; some positions are reported by more than one filer.
Insiders
Forms 3, 4 and 5Form 4 aggregation pending
Share classes
| Class | Listing | Shares outstanding | As of |
|---|---|---|---|
| Common stock | STLD on Nasdaq | 142,217,487 | Oct 21, 2026 |
Notes and sources
- STEEL DYNAMICS INC 10-Q for period ended 2026-09-30, Cover page (0001104659-26-118461)
- SEC public float (non-affiliates): $13.00B as of Jun 30, 2025, from the 10-K cover. It is a dollar value at a past date, not circulating supply.