OC Institutional Ownership
Who owns Owens Corning and what the big funds did with it last quarter, from every SEC 13F filing. 690 funds reported holding OC at Jun 30, 2026, together owning 105.6% of the company.
- ▲359 buying vs 291 selling
- ▲Held by funds +4.3 pts
- ▲Funds holding +52
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 690 | 638 | +8.2% |
| In funds' top 10 | 13 | 3 | +333.3% |
| 13F shares | 83.5M | 80.1M | +4.3% |
| Held by funds | 105.6% | 101.3% | +4.3 pts |
| New positions | 129 | 93 | +38.7% |
| Increased | 230 | 253 | −9.1% |
| Reduced | 218 | 184 | +18.5% |
| Sold out | 73 | 108 | −32.4% |
| Calls (shares) | 49K | 106K | −53.7% |
| Puts (shares) | 31K | 154K | −79.8% |
| Put/call ratio | 0.63 | 1.45 | −56.4% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in OC
All superinvestors →
Who owns OC
share of fund held shares- Index and passive funds37.4%
- Active managers and hedge funds45.0%
- Banks and brokers13.7%
- Pensions, insurers and other3.9%
The top 10 holders own 44.4% of all OC shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
206 funds changed their position- DekaBank Deutsche GirozentraleTrimmed−416K sh
- Banque Pictet & Cie SATrimmed−398K sh
- Mackenzie Financial CorpAdded+255K sh
- Bank Pictet & Cie (Europe) AGTrimmed−249K sh
- Robeco Institutional Asset Management B.V.Trimmed−83K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 11.15% | 8.8M | $1.4B | −396K |
| 2 | Vanguard Portfolio Management LLC | 6.92% | 5.5M | $869M | −39K |
| 3 | AQR Capital Management LLC | 4.65% | 3.7M | $578M | +1.1M |
| 4 | Vanguard Capital Management LLC | 4.59% | 3.6M | $577M | +12K |
| 5 | State Street Corp | 3.92% | 3.1M | $492M | +33K |
| 6 | Dimensional Fund Advisors LP | 3.73% | 3M | $469M | +187K |
| 7 | First Trust Advisors LP | 3.67% | 2.9M | $461M | +720K |
| 8 | American Century Companies Inc | 2.85% | 2.3M | $359M | +213K |
| 9 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | 2.81% | 2.2M | $353M | −977 |
| 10 | Davis Selected Advisers | 2.63% | 2.1M | $331M | −20K |
- AQR Capital Management LLC+1.1M sh+$179M
- Norges Bank+1.1M sh+$175M
- Point72 Asset Management, L.P.+882K sh+$140M
- First Trust Advisors LP+720K sh+$115M
- Deprince Race & Zollo Inc+286K sh+$45.4M
- Marshall Wace, LLP+240K sh+$38.1M
- American Century Companies Inc+213K sh+$33.9M
- Dimensional Fund Advisors LP+187K sh+$29.8M
- Millennium Management LLC−528K sh−$83.9M
- Two Sigma Investments, LP−443K sh−$70.4M
- BlackRock, Inc.−396K sh−$63M
- D. E. Shaw & Co., Inc.−499K sh−$54M
- Arrowstreet Capital, Limited Partnership−320K sh−$50.9M
- SG Americas Securities, LLC−320K sh−$50.8M
- Vaughan Nelson Investment Management, L.P.−424K sh−$45.9M
- Deutsche Bank Ag\−245K sh−$38.9M
OC institutional ownership FAQ
Who owns the most OC stock?
In Q2 2026 13F filings the largest holder of OC was BlackRock, Inc., followed by Vanguard Portfolio Management LLC and AQR Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of OC is owned by institutions?
Funds that file 13F reports held 105.6% of OC's shares at Jun 30, 2026, compared with 101.3% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying OC?
In Q2 2026, 359 funds bought OC (129 of them new positions) and 291 sold (73 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for OC is strongly bullish.
What is OC's institutional put/call ratio?
Funds reported $4.9M of OC puts against $7.8M of calls, a put/call ratio of 0.63 (1.45 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this OC ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.