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Owens Corning (OC) institutional ownership

Latest close $140.09 Jul 21, 2026
Market cap$11.4B 52-week range SectorBasic Materials
Funds holding · Q1 2026
626
reported OC position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $288M
346 buyers · 280 sellers

Owens Corning (OC) price and institutional activity

Dates

Q1 2026

$1.7B bought by 346 investors
American Century Companies Inc$206MAQR Capital Management LLC$132M +344 more
$1.4B sold by 280 investors
T. Rowe Price Associates-$128MNorges-$128M +278 more
Bought Sold Totals per quarter; hover a bar for the names.

Owens Corning (OC) institutional activity · 626

Investor Type Est. change Change Δ Own Date
American Century Companies Inc · Added +$206M
Change +1.7M Date Q1 2026
American Century Companies Inc Added· Q1 2026 +$206M +1.7M Q1 2026
AQR Capital Management LLC · Added +$132M
Change +1.1M Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +$132M +1.1M Q1 2026
T. Rowe Price Associates · Reduced −$128M
Change −1.1M Date Q1 2026
T. Rowe Price Associates Reduced· Q1 2026 −$128M −1.1M Q1 2026
Norges · Exited −$128M
Change −1.1M Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −$128M −1.1M −100.0% Q1 2026
Allspring Global Investments Holdings, LLC · Added +$123M
Change +1.0M Date Q1 2026
Allspring Global Investments Holdings, LLC Added· Q1 2026 +$123M +1.0M Q1 2026
Appaloosa LP · Exited −$113M
Change −950K Δ Own −100.0% Date Q1 2026
Appaloosa LP Exited· Q1 2026 −$113M −950K −100.0% Q1 2026
UBS AM · Added +$111M
Change +935K Date Q1 2026
UBS AM Added· Q1 2026 +$111M +935K Q1 2026
Nordea Investment Management AB · Added +$93M
Change +784K Date Q1 2026
Nordea Investment Management AB Added· Q1 2026 +$93M +784K Q1 2026
FMR LLC · Reduced −$80M
Change −668K Δ Own −61.5% Date Q1 2026
FMR LLC Reduced· Q1 2026 −$80M −668K −61.5% Q1 2026
Harris Associates L P · Added +$76M
Change +635K Δ Own +226.3% Date Q1 2026
Harris Associates L P Added· Q1 2026 +$76M +635K +226.3% Q1 2026
Sound Shore Management Inc · New +$71M
Change +592K Date Q1 2026
Sound Shore Management Inc New· Q1 2026 +$71M +592K Q1 2026
Balyasny Asset Management L.P. · New +$54M
Change +450K Date Q1 2026
Balyasny Asset Management L.P. New· Q1 2026 +$54M +450K Q1 2026
Two Sigma Advisers, LP · Exited −$52M
Change −436K Δ Own −100.0% Date Q1 2026
Two Sigma Advisers, LP Exited· Q1 2026 −$52M −436K −100.0% Q1 2026
Empower Advisory Group, LLC · Reduced −$51M
Change −427K Date Q1 2026
Empower Advisory Group, LLC Reduced· Q1 2026 −$51M −427K Q1 2026
Point72 Asset Management, L.P. · Reduced −$51M
Change −425K Δ Own −55.9% Date Q1 2026
Point72 Asset Management, L.P. Reduced· Q1 2026 −$51M −425K −55.9% Q1 2026
Data through Q1 2026 · filed Jun 9, 2026
15 of 626

Famous investor activity in Owens Corning (OC)

Owens Corning (OC) 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
Marcon Rachel Barthelemy · Officer Sell −$84K
Price $120.71 Qty −700 Owned 16K Trade date May 28, 2026 Filed date May 29, 2026
Marcon Rachel Barthelemy Officer Sell $120.71 −700 −$84K 16K May 28, 2026 May 29, 2026
Festa Alfred E. · Director Grant (A) $50K
Price $121.67 Qty 407 Owned 13K Trade date May 8, 2026 Filed date May 12, 2026
Festa Alfred E. Director Grant (A) $121.67 407 $50K 13K May 8, 2026 May 12, 2026
Martin Paul Edward · Director Grant (A) $46K
Price $121.67 Qty 382 Owned 8K Trade date May 8, 2026 Filed date May 12, 2026
Martin Paul Edward Director Grant (A) $121.67 382 $46K 8K May 8, 2026 May 12, 2026
Nimocks Suzanne P. · Director Grant (A) $50K
Price $121.67 Qty 414 Owned 37K Trade date May 8, 2026 Filed date May 12, 2026
Nimocks Suzanne P. Director Grant (A) $121.67 414 $50K 37K May 8, 2026 May 12, 2026
Lonergan Edward F. · Director Grant (A) $91K
Price $121.67 Qty 750 Owned 54K Trade date May 8, 2026 Filed date May 12, 2026
Lonergan Edward F. Director Grant (A) $121.67 750 $91K 54K May 8, 2026 May 12, 2026
Doerfler Mari · Officer Sell −$233K
Price $120.92 Qty −2K Owned 3K Trade date May 8, 2026 Filed date May 12, 2026
Doerfler Mari Officer Sell $120.92 −2K −$233K 3K May 8, 2026 May 12, 2026
Collins Michelle T. · Director Grant (A) $58K
Price $121.67 Qty 478 Owned 3K Trade date May 8, 2026 Filed date May 12, 2026
Collins Michelle T. Director Grant (A) $121.67 478 $58K 3K May 8, 2026 May 12, 2026
Elsner Adrienne · Director Grant (A) $46K
Price $121.67 Qty 382 Owned 19K Trade date May 8, 2026 Filed date May 12, 2026
Elsner Adrienne Director Grant (A) $121.67 382 $46K 19K May 8, 2026 May 12, 2026
Williams John David · Director Grant (A) $46K
Price $121.67 Qty 382 Owned 54K Trade date May 8, 2026 Filed date May 12, 2026
Williams John David Director Grant (A) $121.67 382 $46K 54K May 8, 2026 May 12, 2026
Cordeiro Eduardo E. · Director Grant (A) $50K
Price $121.67 Qty 407 Owned 16K Trade date May 8, 2026 Filed date May 12, 2026
Cordeiro Eduardo E. Director Grant (A) $121.67 407 $50K 16K May 8, 2026 May 12, 2026
Fister Todd W. · Officer Grant (A) $1000K
Price $122.73 Qty 8K Owned 53K Trade date May 1, 2026 Filed date May 5, 2026
Fister Todd W. Officer Grant (A) $122.73 8K $1000K 53K May 1, 2026 May 5, 2026
Cordeiro Eduardo E. · Director Grant (A) $10K
Price $114.95 Qty 85 Owned 16K Trade date Apr 9, 2026 Filed date Apr 13, 2026
Cordeiro Eduardo E. Director Grant (A) $114.95 85 $10K 16K Apr 9, 2026 Apr 13, 2026
Elsner Adrienne · Director Grant (A) $14K
Price $114.95 Qty 125 Owned 18K Trade date Apr 9, 2026 Filed date Apr 13, 2026
Elsner Adrienne Director Grant (A) $114.95 125 $14K 18K Apr 9, 2026 Apr 13, 2026
Nimocks Suzanne P. · Director Grant (A) $16K
Price $114.95 Qty 140 Owned 36K Trade date Apr 9, 2026 Filed date Apr 13, 2026
Nimocks Suzanne P. Director Grant (A) $114.95 140 $16K 36K Apr 9, 2026 Apr 13, 2026
Mannen Maryann T. · Director Grant (A) $19K
Price $114.95 Qty 163 Owned 27K Trade date Apr 9, 2026 Filed date Apr 13, 2026
Mannen Maryann T. Director Grant (A) $114.95 163 $19K 27K Apr 9, 2026 Apr 13, 2026
15 of 120
15 of 120 Sign in to continue to older insider transactions.

Owens Corning (OC) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 11.0M
% of shares outstanding 12.3% Filing date Jan 23, 2024
BlackRock Inc. 11.0M 12.3% Jan 23, 2024
Vanguard Group Inc 9.1M
% of shares outstanding 10.2% Filing date Feb 13, 2024
Vanguard Group Inc 9.1M 10.2% Feb 13, 2024
Blackrock, Inc. 8.1M
% of shares outstanding 10.0% Filing date Jun 4, 2026
Blackrock, Inc. 8.1M 10.0% Jun 4, 2026
Vanguard Portfolio Management 5.5M
% of shares outstanding 6.9% Filing date Apr 29, 2026
Vanguard Portfolio Management 5.5M 6.9% Apr 29, 2026
Vanguard Capital Management 4.2M
% of shares outstanding 5.3% Filing date Apr 30, 2026
Vanguard Capital Management 4.2M 5.3% Apr 30, 2026
Boston Partners 4.2M
% of shares outstanding 4.2% Filing date Feb 14, 2022
Boston Partners 4.2M 4.2% Feb 14, 2022
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Owens Corning (OC) ownership FAQ

Who owns OC?

626 reporting institutions disclosed OC 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.