Olympic Steel, Inc.
Olympic Steel, Inc. (ZEUS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ZEUS · as of Sep 30, 2025
Ownership Breakdown
143
Institutional Holders
▲ 2 vs Q2
$286.49M
Total Inst. Value
▼ $16.70M vs Q2
11.26M
Shares Outstanding
freeFloat 87.17%
9.41M
13F Shares Held
▲ 106,241 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
ZEUS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. wholesale-metals service centers & of fices | 2.21M | 18.83% | 18.83% | $67.30B | Nov 12, 2025 | ▲ 38.7K |
DIMENSIONAL FUND ADVISORS LP wholesale-metals service centers & of fices | 743.8K | 6.34% | 6.34% | $22.65B | Nov 12, 2025 | ▼ 4.8K |
VANGUARD GROUP INC wholesale-metals service centers & of fices | 608.2K | 5.18% | 5.18% | $18.52B | Nov 7, 2025 | ▼ 8.6K |
ACADIAN ASSET MANAGEMENT LLC wholesale-metals service centers & of fices | 395.5K | 3.37% | 3.37% | $12.04B | Nov 13, 2025 | ▼ 7.8K |
AMERICAN CENTURY COMPANIES INC wholesale-metals service centers & of fices | 391.4K | 3.33% | 3.33% | $11.92B | Nov 12, 2025 | ▲ 26.7K |
MORGAN STANLEY wholesale-metals service centers & of fices | 257.9K | 2.20% | 2.20% | $7.85B | May 27, 2026 | ▼ 2.2K |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC wholesale-metals service centers & of fices | 252.1K | 2.15% | 2.15% | $7.68B | Nov 10, 2025 | ▲ 76.3K |
AQR CAPITAL MANAGEMENT LLC wholesale-metals service centers & of fices | 249.9K | 2.13% | 2.13% | $7.61B | Nov 14, 2025 | ▲ 37.5K |
GEODE CAPITAL MANAGEMENT, LLC wholesale-metals service centers & of fices | 241.1K | 2.05% | 2.05% | $7.34B | Nov 12, 2025 | ▲ 74 |
GOLDMAN SACHS GROUP INC wholesale-metals service centers & of fices | 232.3K | 1.98% | 1.98% | $7.07B | Nov 14, 2025 | ▲ 57.7K |
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
23
Increased
+488.1K shares1
New Positions
first time holders24
Decreased
−415.9K shares0
Sold Out
fully exitedNet shares change (top 50)
+72.2K
+488.1K / −415.9K
Net new holders
+0
1 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
ZEUS insider trading · insider activity
Source: SEC Form 4
6
Buy transactions
9
Sell transactions
0.67
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 |
|---|---|---|---|---|---|---|---|
Kesner Idalene Fay director | Feb 13, 2026 | D-Return | 20,153 | — | — | 0 | Form 4 ↗ |
Kesner Idalene Fay director | Feb 13, 2026 | D-Return | 5,231 | $0.01 | $52.31 | 0 | Form 4 ↗ |
Kempthorne Dirk A director | Feb 13, 2026 | D-Return | 5,231 | $0.01 | $52.31 | 0 | Form 4 ↗ |
Kempthorne Dirk A director | Feb 13, 2026 | D-Return | 42,826 | — | — | 0 | Form 4 ↗ |
Whiting Vanessa director | Feb 13, 2026 | D-Return | 15,497 | — | — | 0 | Form 4 ↗ |
Whiting Vanessa director | Feb 13, 2026 | D-Return | 5,231 | $0.01 | $52.31 | 0 | Form 4 ↗ |
Christen Lisa K Vice President and Treasurer | Feb 13, 2026 | D-Return | 1,753 | — | — | 0 | Form 4 ↗ |
Christen Lisa K Vice President and Treasurer | Feb 13, 2026 | D-Return | 375 | $0.01 | $3.75 | 0 | Form 4 ↗ |
Christen Lisa K Vice President and Treasurer | Feb 13, 2026 | D-Return | 1,058 | — | — | 0 | Form 4 ↗ |
MANSON RICHARD A Chief Financial Officer | Feb 13, 2026 | D-Return | 16,503 | — | — | 0 | 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
Olympic Steel, Inc. (ZEUS) is primarily owned by institutional investors, who hold approximately 83.5% of total shares outstanding. Company insiders own approximately 12.83%, while retail and public investors account for the remaining 3.62%.
The largest institutional shareholder of Olympic Steel, Inc. is BLACKROCK, INC., holding approximately 2.21 million shares — equal to 18.83% of outstanding shares — as of September 30, 2025.
A total of 143 institutional investors currently hold ZEUS stock, with a combined institutional value of approximately $286,491,248 as of the most recent 13F filing period.
Frequently asked questions
ZEUS ownershipOlympic Steel, Inc. (ZEUS) is primarily owned by institutional investors, who hold approximately 83.5% of shares. The largest shareholder is BLACKROCK, INC. with a 18.83% stake. Company insiders hold 12.83%. Data sourced from SEC Form 13F as of September 30, 2025.