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Olympic Steel, Inc. (ZEUS) institutional ownership

Market cap$539M SectorBasic Materials
Funds holding · Q1 2026
138
reported ZEUS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
0 buyers · 138 sellers

Olympic Steel, Inc. (ZEUS) price and institutional activity

Dates

Q1 2026

$0 bought by 0 investors
$0 sold by 138 investors
BlackRockDimensional +136 more
Bought Sold Totals per quarter; hover a bar for the names.

Olympic Steel, Inc. (ZEUS) institutional activity · 138

Investor Type Est. change Change Δ Own Date
BlackRock · Exited
Change −2.1M Δ Own −100.0% Date Q1 2026
BlackRock Exited· Q1 2026 −2.1M −100.0% Q1 2026
Dimensional · Exited
Change −726K Δ Own −100.0% Date Q1 2026
Dimensional Exited· Q1 2026 −726K −100.0% Q1 2026
Nomura Asset Management International Inc. · Exited
Change −541K Δ Own −100.0% Date Q1 2026
Nomura Asset Management International Inc. Exited· Q1 2026 −541K −100.0% Q1 2026
American Century Companies Inc · Exited
Change −411K Δ Own −100.0% Date Q1 2026
American Century Companies Inc Exited· Q1 2026 −411K −100.0% Q1 2026
Schwab · Exited
Change −328K Δ Own −100.0% Date Q1 2026
Schwab Exited· Q1 2026 −328K −100.0% Q1 2026
Geode · Exited
Change −241K Δ Own −100.0% Date Q1 2026
Geode Exited· Q1 2026 −241K −100.0% Q1 2026
Alliancebernstein L.P. · Exited
Change −228K Δ Own −100.0% Date Q1 2026
Alliancebernstein L.P. Exited· Q1 2026 −228K −100.0% Q1 2026
Jb Capital Partners LP · Exited
Change −222K Δ Own −100.0% Date Q1 2026
Jb Capital Partners LP Exited· Q1 2026 −222K −100.0% Q1 2026
State Street · Exited
Change −217K Δ Own −100.0% Date Q1 2026
State Street Exited· Q1 2026 −217K −100.0% Q1 2026
D. E. Shaw & Co., Inc. · Exited
Change −217K Δ Own −100.0% Date Q1 2026
D. E. Shaw & Co., Inc. Exited· Q1 2026 −217K −100.0% Q1 2026
Invenomic Capital Management LP · Exited
Change −209K Δ Own −100.0% Date Q1 2026
Invenomic Capital Management LP Exited· Q1 2026 −209K −100.0% Q1 2026
Qube Research & Technologies Ltd · Exited
Change −202K Δ Own −100.0% Date Q1 2026
Qube Research & Technologies Ltd Exited· Q1 2026 −202K −100.0% Q1 2026
Csm Advisors, LLC · Exited
Change −175K Δ Own −100.0% Date Q1 2026
Csm Advisors, LLC Exited· Q1 2026 −175K −100.0% Q1 2026
Abc Arbitrage SA · Exited
Change −157K Δ Own −100.0% Date Q1 2026
Abc Arbitrage SA Exited· Q1 2026 −157K −100.0% Q1 2026
Magnetar Financial LLC · Exited
Change −154K Δ Own −100.0% Date Q1 2026
Magnetar Financial LLC Exited· Q1 2026 −154K −100.0% Q1 2026
Data through Q1 2026 · filed May 27, 2026
15 of 138

Famous investor activity in Olympic Steel, Inc. (ZEUS)

Olympic Steel, Inc. (ZEUS) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Kesner Idalene Fay · Director 2 operations -25K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Kesner Idalene Fay Director 2 operations -25K 0 Feb 13, 2026 Feb 17, 2026
Kempthorne Dirk A. · Director 2 operations -48K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Kempthorne Dirk A. Director 2 operations -48K 0 Feb 13, 2026 Feb 17, 2026
Whiting Vanessa · Director 2 operations -21K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Whiting Vanessa Director 2 operations -21K 0 Feb 13, 2026 Feb 17, 2026
Christen Lisa K. · Officer 5 operations -7K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Christen Lisa K. Officer 5 operations -7K 0 Feb 13, 2026 Feb 17, 2026
Manson Richard A. · Officer 8 operations -65K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Manson Richard A. Officer 8 operations -65K 0 Feb 13, 2026 Feb 17, 2026
Marabito Richard T. · Director, Officer 6 operations -207K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Marabito Richard T. Director, Officer 6 operations -207K 0 Feb 13, 2026 Feb 17, 2026
Siegal Michael D. · Director, Officer Shares transferred outside the market (D), often for tax or as a gift, not a market sale -1.1M
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Siegal Michael D. Director, Officer Shares transferred outside the market (D), often for tax or as a gift, not a market sale -1.1M 0 Feb 13, 2026 Feb 17, 2026
Stovsky Richard P. · Director 2 operations -18K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Stovsky Richard P. Director 2 operations -18K 0 Feb 13, 2026 Feb 17, 2026
Anton Arthur F. · Director 2 operations -89K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Anton Arthur F. Director 2 operations -89K 0 Feb 13, 2026 Feb 17, 2026
Greiff Andrew S. · Officer 5 operations -64K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Greiff Andrew S. Officer 5 operations -64K 0 Feb 13, 2026 Feb 17, 2026
Wolfort David A. · Director 4 operations -218K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Wolfort David A. Director 4 operations -218K 0 Feb 13, 2026 Feb 17, 2026
Scott Peter Jennings · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -5K
Owned 0 Trade date Feb 13, 2026 Filed date Feb 17, 2026
Scott Peter Jennings Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -5K 0 Feb 13, 2026 Feb 17, 2026
Marabito Richard T. · Director, Officer Tax withholding or exercise payment (F) -$312K
Price $42.78 Qty -7K Owned 73K Trade date Feb 10, 2026 Filed date Feb 10, 2026
Marabito Richard T. Director, Officer Tax withholding or exercise payment (F) $42.78 -7K -$312K 73K Feb 10, 2026 Feb 10, 2026
Marabito Richard T. · Director, Officer Grant (A) 16K
Owned 81K Trade date Feb 10, 2026 Filed date Feb 10, 2026
Marabito Richard T. Director, Officer Grant (A) 16K 81K Feb 10, 2026 Feb 10, 2026
Manson Richard A. · Officer Tax withholding or exercise payment (F) -$102K
Price $51.14 Qty -2K Owned 18K Trade date Feb 10, 2026 Filed date Feb 10, 2026
Manson Richard A. Officer Tax withholding or exercise payment (F) $51.14 -2K -$102K 18K Feb 10, 2026 Feb 10, 2026
15 of 27
15 of 27 Sign in to continue to older insider transactions.

Olympic Steel, Inc. (ZEUS) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 2.1M
% of shares outstanding 18.9% Filing date Jan 19, 2024
BlackRock Inc. 2.1M 18.9% Jan 19, 2024
Blackrock, Inc. 1.4M
% of shares outstanding 12.2% Filing date Oct 7, 2024
Blackrock, Inc. 1.4M 12.2% Oct 7, 2024
Vanguard Group Inc 669K
% of shares outstanding 6.0% Filing date Feb 13, 2024
Vanguard Group Inc 669K 6.0% Feb 13, 2024
State Street Corp 487K
% of shares outstanding 4.4% Filing date Oct 18, 2024
State Street Corp 487K 4.4% Oct 18, 2024
Invesco Ltd. 313K
% of shares outstanding 2.8% Filing date Feb 1, 2024
Invesco Ltd. 313K 2.8% Feb 1, 2024
Dimensional Fund Advisors LP 0
% of shares outstanding 0.0% Filing date Apr 9, 2026
Dimensional Fund Advisors LP 0 0.0% Apr 9, 2026
6 of 6

Olympic Steel, Inc. (ZEUS) ownership FAQ

Who owns ZEUS?

138 reporting institutions disclosed ZEUS position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.