Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in SID held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 4.5M | $4.1M | +1.9% | 0.340% | 0.00% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 3.6M | $3.3M | -28.1% | 0.272% | 0.00% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 3.5M | $3.2M | -2.1% | 0.264% | 0.00% |
| 4 | UBS Group AG | 3.3M | $3.1M | +110.9% | 0.252% | 0.00% |
| 5 | CITADEL ADVISORS LLC | 2.2M | $2.0M | +162.1% | 0.167% | 0.00% |
| 6 | STATE STREET CORP | 1.7M | $1.7M | -1.1% | 0.128% | 0.00% |
| 7 | JANE STREET GROUP, LLC | 1.7M | $1.5M | -10.6% | 0.125% | 0.00% |
| 8 | Banque Cantonale Vaudoise | 1.6M | $1.5M | 0.0% | 0.121% | 0.20% |
| 9 | TWO SIGMA INVESTMENTS, LP | 1.0M | $952K | +20.8% | 0.079% | 0.00% |
| 10 | XTX Topco Ltd | 724K | $662K | +38.1% | 0.055% | 0.01% |
| 11 | NORTHERN TRUST CORP | 553K | $506K | -1.0% | 0.042% | 0.00% |
| 12 | Caption Management, LLC | 512K | $468K | -22.9% | 0.039% | 0.00% |
| 13 | VAN ECK ASSOCIATES CORP | 446K | $411K | +14.8% | 0.034% | 0.00% |
| 14 | BAROMETER CAPITAL MANAGEMENT INC. | 397K | $363K | +5.9% | 0.030% | 0.10% |
| 15 | MARSHALL WACE, LLP | 350K | $322K | -64.5% | 0.026% | 0.00% |
| 16 | VANGUARD FIDUCIARY TRUST CO | 293K | $268K | 0.0% | 0.022% | 0.00% |
| 17 | MORGAN STANLEY | 243K | $223K | -76.5% | 0.018% | 0.00% |
| 18 | MILLENNIUM MANAGEMENT LLC | 237K | $217K | -71.6% | 0.018% | 0.00% |
| 19 | GOLDMAN SACHS GROUP INC | 123K | $113K | -89.1% | 0.009% | 0.00% |
| 20 | Invesco Ltd. | 119K | $109K | -4.1% | 0.009% | 0.00% |
| 21 | Inspire Advisors, LLC | 116K | $106K | +38.4% | 0.009% | 0.01% |
| 22 | JPMORGAN CHASE & CO | 104K | $95K | -87.7% | 0.008% | 0.00% |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 99K | $90K | -24.7% | 0.007% | 0.00% |
| 24 | STOREBRAND ASSET MANAGEMENT AS | 87K | $80K | -61.1% | 0.007% | 0.00% |
| 25 | Inspire Investing, LLC | 76K | $70K | +45.1% | 0.006% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SID — a direct measure of their conviction.
Filings activity in SID during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 65 | 22% | 2.14% | 0.62 pp | $26M | 41% |
| Q1 2026 | 83 | +3.8% | 2.76% | 0.18 pp | $44M | 28% |
| Q4 2025 | 80 | +6.7% | 2.94% | +0.35 pp | $61M | +30% |
| Q3 2025 | 75 | 5.1% | 2.59% | +0.41 pp | $47M | +26% |
| Q2 2025 | 79 | +1.3% | 2.18% | 0.10 pp | $37M | 19% |
| Q1 2025 | 78 | 15% | 2.28% | 0.11 pp | $47M | +6.2% |
| Q4 2024 | 92 | 7.1% | 2.39% | 0.08 pp | $44M | 40% |
| Q3 2024 | 99 | — | 2.47% | — | $73M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying SID stock.
Based on Q2 2026 13F filings, institutional ownership of Companhia Siderúrgica Nacional stands at 2.1%, held across 65 reporting institutions.
VANGUARD CAPITAL MANAGEMENT LLC is the largest reported institutional holder of SID, with approximately 4,514,354 shares worth $0.00B as of Q2 2026.
Yes — 6 widely-followed marquee investors appear among the top 25 institutional holders of SID, including RENAISSANCE TECHNOLOGIES LLC, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC, TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for SID is 49 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
6 institutions opened new positions in SID during Q2 2026, while 23 fully exited. 11 added to existing positions and 44 trimmed.
SID institutional ownership fell by 0.62 percentage points quarter-over-quarter, with a net change of -18 holders.
The top 10 institutions account for 84.8% of all reported 13F value in SID, and the top 25 account for 98.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Companhia Siderúrgica Nacional (SID) Institutional Ownership