Companhia Siderúrgica Nacional
Companhia Siderúrgica Nacional (SID) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SID · as of Sep 30, 2025
Ownership Breakdown
79
Institutional Holders
▼ 5 vs Q2
$51.58M
Total Inst. Value
▲ $8.10M vs Q2
1.33B
Shares Outstanding
freeFloat 99.99%
34.30M
13F Shares Held
▲ 3.71M 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
SID 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 & finishing mills | 4.80M | 36.23% | 36.23% | $7.21B | Nov 7, 2025 | — held |
MILLENNIUM MANAGEMENT LLC steel works, blast furnaces & rolling & finishing mills | 3.82M | 28.81% | 28.81% | $5.73B | Nov 14, 2025 | ▲ 1.32M |
DIMENSIONAL FUND ADVISORS LP steel works, blast furnaces & rolling & finishing mills | 3.61M | 27.22% | 27.22% | $5.42B | Nov 12, 2025 | ▼ 190.1K |
CITADEL ADVISORS LLC steel works, blast furnaces & rolling & finishing mills | 2.94M | 22.17% | 22.17% | $4.41B | Nov 14, 2025 | ▲ 1.37M |
VAN ECK ASSOCIATES CORP steel works, blast furnaces & rolling & finishing mills | 2.59M | 19.56% | 19.56% | $3.89B | Nov 13, 2025 | ▲ 565.9K |
BLACKROCK, INC. steel works, blast furnaces & rolling & finishing mills | 2.47M | 18.65% | 18.65% | $3.71B | Nov 12, 2025 | ▲ 264.1K |
AMERICAN CENTURY COMPANIES INC steel works, blast furnaces & rolling & finishing mills | 2.20M | 16.60% | 16.60% | $3.30B | Nov 12, 2025 | ▲ 2.5K |
RENAISSANCE TECHNOLOGIES LLC steel works, blast furnaces & rolling & finishing mills | 1.81M | 13.62% | 13.62% | $2.71B | Nov 13, 2025 | ▲ 339.6K |
UBS GROUP AG steel works, blast furnaces & rolling & finishing mills | 1.59M | 12.02% | 12.02% | $2.39B | Nov 13, 2025 | ▲ 723.4K |
STATE STREET CORP steel works, blast furnaces & rolling & finishing mills | 1.54M | 11.62% | 11.62% | $2.44B | Nov 14, 2025 | ▲ 96.4K |
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
27
Increased
+6.93M shares4
New Positions
first time holders14
Decreased
−1.69M shares0
Sold Out
fully exitedNet shares change (top 50)
+5.23M
+6.93M / −1.69M
Net new holders
+17
4 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
SID insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
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
Companhia Siderúrgica Nacional (SID) is primarily owned by institutional investors, who hold approximately 2.6% of total shares outstanding. Company insiders own approximately 0.01%, while retail and public investors account for the remaining 97.41%.
The largest institutional shareholder of Companhia Siderúrgica Nacional is VANGUARD GROUP INC, holding approximately 4.80 million shares — equal to 36.23% of outstanding shares — as of September 30, 2025.
A total of 79 institutional investors currently hold SID stock, with a combined institutional value of approximately $51,575,183 as of the most recent 13F filing period.
Frequently asked questions
SID ownershipCompanhia Siderúrgica Nacional (SID) is primarily owned by institutional investors, who hold approximately 2.6% of shares. The largest shareholder is VANGUARD GROUP INC with a 36.23% stake. Company insiders hold 0.01%. Data sourced from SEC Form 13F as of September 30, 2025.