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Reliance Steel & Aluminum Co. (RS) institutional ownership

Latest close $395.37 Jul 23, 2026
Market cap$19.3B 52-week range SectorBasic Materials
Funds holding · Q1 2026
604
reported RS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net sold $270M
313 buyers · 291 sellers

Reliance Steel & Aluminum Co. (RS) price and institutional activity

Dates

Q1 2026

$868M bought by 313 investors
T. Rowe Price Associates$189MBlackRock$58M +311 more
$1.1B sold by 291 investors
Norges-$228MHolocene Advisors, LP-$127M +289 more
Bought Sold Totals per quarter; hover a bar for the names.

Reliance Steel & Aluminum Co. (RS) institutional activity · 604

Investor Type Est. change Change Δ Own Date
Norges · Exited −$228M
Change −719K Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −$228M −719K −100.0% Q1 2026
T. Rowe Price Associates · Added +$189M
Change +596K Date Q1 2026
T. Rowe Price Associates Added· Q1 2026 +$189M +596K Q1 2026
Holocene Advisors, LP · Exited −$127M
Change −399K Δ Own −100.0% Date Q1 2026
Holocene Advisors, LP Exited· Q1 2026 −$127M −399K −100.0% Q1 2026
BlackRock · Added +$58M
Change +182K Date Q1 2026
BlackRock Added· Q1 2026 +$58M +182K Q1 2026
Wellington Management Group LLP · Reduced −$53M
Change −167K Δ Own −10.4% Date Q1 2026
Wellington Management Group LLP Reduced· Q1 2026 −$53M −167K −10.4% Q1 2026
Panagora Asset Management Inc · Added +$48M
Change +151K Date Q1 2026
Panagora Asset Management Inc Added· Q1 2026 +$48M +151K Q1 2026
American Century Companies Inc · Reduced −$47M
Change −149K Date Q1 2026
American Century Companies Inc Reduced· Q1 2026 −$47M −149K Q1 2026
JPMorgan Chase & Co · Added +$47M
Change +147K Date Q1 2026
JPMorgan Chase & Co Added· Q1 2026 +$47M +147K Q1 2026
William Blair Investment Management, LLC · Added +$39M
Change +123K Date Q1 2026
William Blair Investment Management, LLC Added· Q1 2026 +$39M +123K Q1 2026
Nuveen, LLC · Reduced −$37M
Change −116K Date Q1 2026
Nuveen, LLC Reduced· Q1 2026 −$37M −116K Q1 2026
State Street · Added +$36M
Change +113K Date Q1 2026
State Street Added· Q1 2026 +$36M +113K Q1 2026
Caisse de Depot Et Placement du Quebec · Reduced −$31M
Change −97K Date Q1 2026
Caisse de Depot Et Placement du Quebec Reduced· Q1 2026 −$31M −97K Q1 2026
Jane Street Group, LLC · Reduced −$30M
Change −96K Date Q1 2026
Jane Street Group, LLC Reduced· Q1 2026 −$30M −96K Q1 2026
BNP Paribas Asset Management Holding S.A. · Added +$28M
Change +88K Date Q1 2026
BNP Paribas Asset Management Holding S.A. Added· Q1 2026 +$28M +88K Q1 2026
Citadel Advisors LLC Reduced· Q1 2026 −$27M −86K −67.6% Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 604

Famous investor activity in Reliance Steel & Aluminum Co. (RS)

Reliance Steel & Aluminum Co. (RS) 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
Sznewajs John G. · Director Grant (A) 469
Owned 469 Trade date May 20, 2026 Filed date May 22, 2026
Sznewajs John G. Director Grant (A) 469 469 May 20, 2026 May 22, 2026
Stotlar Douglas · Director Grant (A) 469
Owned 469 Trade date May 20, 2026 Filed date May 22, 2026
Stotlar Douglas Director Grant (A) 469 469 May 20, 2026 May 22, 2026
Seeger David W. · Director Grant (A) 469
Owned 3K Trade date May 20, 2026 Filed date May 22, 2026
Seeger David W. Director Grant (A) 469 3K May 20, 2026 May 22, 2026
McEvoy Robert Ambrose · Director Grant (A) 469
Owned 23K Trade date May 20, 2026 Filed date May 22, 2026
McEvoy Robert Ambrose Director Grant (A) 469 23K May 20, 2026 May 22, 2026
Kamsickas James Kevin · Director Grant (A) 469
Owned 1K Trade date May 20, 2026 Filed date May 22, 2026
Kamsickas James Kevin Director Grant (A) 469 1K May 20, 2026 May 22, 2026
Dellaquila Frank J. · Director Grant (A) 469
Owned 3K Trade date May 20, 2026 Filed date May 22, 2026
Dellaquila Frank J. Director Grant (A) 469 3K May 20, 2026 May 22, 2026
Colonias Karen Winifred · Director Grant (A) 469
Owned 469 Trade date May 20, 2026 Filed date May 22, 2026
Colonias Karen Winifred Director Grant (A) 469 469 May 20, 2026 May 22, 2026
Baldwin Lisa · Director Grant (A) 469
Owned 5K Trade date May 20, 2026 Filed date May 22, 2026
Baldwin Lisa Director Grant (A) 469 5K May 20, 2026 May 22, 2026
Ajemyan Arthur · Officer 3 operations −$1.3M
Price $357.61–$359.18 Qty −4K Owned 17K Trade date Apr 27, 2026 Filed date Apr 28, 2026
Ajemyan Arthur Officer 3 operations $357.61–$359.18 −4K −$1.3M 17K Apr 27, 2026 Apr 28, 2026
Smith William A. II · Officer 2 operations −$2.0M
Price $297.23–$302.59 Qty −7K Owned 22K Trade date Mar 9, 2026 Filed date Mar 10, 2026
Smith William A. II Officer 2 operations $297.23–$302.59 −7K −$2.0M 22K Mar 9, 2026 Mar 10, 2026
Koch Stephen Paul · Officer Grant (A) 3K
Owned 17K Trade date Mar 5, 2026 Filed date Mar 6, 2026
Koch Stephen Paul Officer Grant (A) 3K 17K Mar 5, 2026 Mar 6, 2026
Lewis Karla R. · Director, Officer Grant (A) 5K
Owned 111K Trade date Mar 5, 2026 Filed date Mar 6, 2026
Lewis Karla R. Director, Officer Grant (A) 5K 111K Mar 5, 2026 Mar 6, 2026
Ajemyan Arthur · Officer Grant (A) 1K
Owned 20K Trade date Mar 5, 2026 Filed date Mar 6, 2026
Ajemyan Arthur Officer Grant (A) 1K 20K Mar 5, 2026 Mar 6, 2026
Smith William A. II · Officer Grant (A) 1K
Owned 28K Trade date Mar 5, 2026 Filed date Mar 6, 2026
Smith William A. II Officer Grant (A) 1K 28K Mar 5, 2026 Mar 6, 2026
Ajemyan Arthur · Officer Tax withholding or exercise payment (F) -5K
Owned 19K Trade date Feb 23, 2026 Filed date Feb 25, 2026
Ajemyan Arthur Officer Tax withholding or exercise payment (F) -5K 19K Feb 23, 2026 Feb 25, 2026
15 of 26
15 of 26 Sign in to continue to older insider transactions.

Reliance Steel & Aluminum Co. (RS) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 7.0M
% of shares outstanding 12.1% Filing date Feb 13, 2024
Vanguard Group Inc 7.0M 12.1% Feb 13, 2024
BlackRock Inc. 6.3M
% of shares outstanding 10.9% Filing date Jan 24, 2024
BlackRock Inc. 6.3M 10.9% Jan 24, 2024
Vanguard Portfolio Management 3.4M
% of shares outstanding 6.5% Filing date Apr 29, 2026
Vanguard Portfolio Management 3.4M 6.5% Apr 29, 2026
T. Rowe Price Associates 3.4M
% of shares outstanding 6.2% Filing date Nov 14, 2024
T. Rowe Price Associates 3.4M 6.2% Nov 14, 2024
Vanguard Capital Management 2.7M
% of shares outstanding 5.2% Filing date Apr 30, 2026
Vanguard Capital Management 2.7M 5.2% Apr 30, 2026
5 of 5

Reliance Steel & Aluminum Co. (RS) ownership FAQ

Who owns RS?

604 reporting institutions disclosed RS 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.