Owens Corning (OC) Ownership
OC ownership summary
as of October 18, 2026- Institutions
- 110.4% of shares outstanding
- Insiders
- 1.11% of shares outstanding
- Shares outstanding
- 79.0M
- Float
- 78.2M shares available to trade
- Short interest
- 3.49% 2.4M shares short
- Days to cover
- 2.10 short interest up 4.3% vs prior month
- Institutions 110.44%
- Insiders 1.11%
OC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 11.15% | 8.8M | $994.3M | −396,314 (−4.3%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 6.92% | 5.5M | $616.9M | −39,451 (−0.7%) | June 30, 2026 |
| 3 | AQR Capital Management LLC | 4.65% | 3.7M | $415.0M | +1.1M (+44.8%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.59% | 3.6M | $409.5M | +12,163 (+0.3%) | June 30, 2026 |
| 5 | State Street Corp | 3.92% | 3.1M | $349.4M | +33,205 (+1.1%) | June 30, 2026 |
| 6 | Dimensional Fund Advisors, Inc. | 3.73% | 3.0M | $333.0M | +187,369 (+6.8%) | June 30, 2026 |
| 7 | First Trust Advisors L.P. | 3.67% | 2.9M | $327.1M | +720,488 (+33.1%) | June 30, 2026 |
| 8 | American Century Companies Inc | 2.85% | 2.3M | $254.4M | +213,016 (+10.4%) | June 30, 2026 |
| 9 | UBS Asset Mgmt Americas Inc | 2.81% | 2.2M | $250.2M | −977 (−0.0%) | June 30, 2026 |
| 10 | Davis Selected Advisers | 2.63% | 2.1M | $234.8M | −19,722 (−0.9%) | June 30, 2026 |
| 11 | Geode Capital Management, LLC | 2.44% | 1.9M | $217.2M | +37,036 (+2.0%) | June 30, 2026 |
| 12 | T. Rowe Price Associates, Inc. | 2.14% | 1.7M | $190.5M | +165,239 (+10.8%) | June 30, 2026 |
| 13 | LSV Asset Management | 1.93% | 1.5M | $171.7M | +62,659 (+4.3%) | June 30, 2026 |
| 14 | Nordea Investment Mgmt Bank Demark A/s | 1.59% | 1.3M | $141.6M | +128,197 (+11.4%) | June 30, 2026 |
| 15 | Point72 Asset Management, L.P. | 1.54% | 1.2M | $137.3M | +882,041 (+263.2%) | June 30, 2026 |
| 16 | NORGES BANK | 1.40% | 1.1M | $124.5M | +33,842 (+3.2%) | June 30, 2026 |
| 17 | Harris Associates L.P. | 1.39% | 1.1M | $123.6M | +180,124 (+19.7%) | June 30, 2026 |
| 18 | JPMorgan Chase & Co | 1.35% | 1.1M | $120.3M | −173,379 (−14.0%) | June 30, 2026 |
| 19 | Nykredit A/S | 1.32% | 1.0M | $117.9M | +1.0M (0.0%) | June 30, 2026 |
| 20 | Gendell Jeffrey L | 1.27% | 1.0M | $113.6M | +66,793 (+7.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 4.9M shares and 5 cut 630K.
OC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 3.56% | 2.8M | $317.6M | −1,008 (−0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.24% | 2.6M | $288.8M | −2,879 (−0.1%) | August 31, 2026 |
| 3 | First Trust RBA Amer Indl RenaisTM ETF | 2.74% | 2.2M | $243.9M | +1,248 (+0.1%) | September 30, 2026 |
| 4 | Vanguard Small Cap Index | 2.25% | 1.8M | $200.6M | −74,122 (−4.0%) | September 30, 2026 |
| 5 | Vanguard MStar Small Cap Value Index | 1.47% | 1.2M | $130.6M | −18,663 (−1.6%) | September 30, 2026 |
| 6 | Vanguard Equity-Income Inv | 1.43% | 1.1M | $127.3M | — | June 30, 2026 |
| 7 | T. Rowe Price Mid-Cap Value | 0.93% | 738K | $83.3M | — | September 30, 2026 |
| 8 | Nordea 1 - Global Climate & Envir BI EUR | 0.81% | 638K | $71.9M | — | August 31, 2026 |
| 9 | State Street® SPDR® S&P MIDCAP 400® ETF | 0.74% | 584K | $65.9M | −4,434 (−0.8%) | September 30, 2026 |
| 10 | DFA US Targeted Value I | 0.70% | 555K | $62.6M | +19,362 (+3.6%) | August 31, 2026 |
| 11 | Davis NY Venture A | 0.70% | 551K | $62.1M | — | August 31, 2026 |
| 12 | Dimensional US Targeted Value ETF | 0.57% | 452K | $51.0M | +83 (+0.0%) | September 30, 2026 |
| 13 | Vanguard Dividend Appreciation ETF | 0.57% | 447K | $50.4M | −8,612 (−1.9%) | September 30, 2026 |
| 14 | American Century Equity Income Inv | 0.54% | 429K | $48.4M | −25,990 (−5.7%) | September 30, 2026 |
| 15 | iShares US Home Construction ETF | 0.53% | 423K | $47.7M | −7,056 (−1.6%) | September 30, 2026 |
| 16 | American Century Mid Cap Value Inv | 0.53% | 419K | $47.3M | +74,101 (+21.5%) | September 30, 2026 |
| 17 | State Street SPDR Port S&P 400 Md CpETF | 0.53% | 418K | $47.1M | −584 (−0.1%) | September 30, 2026 |
| 18 | iShares S&P Mid-Cap 400 Value ETF | 0.52% | 408K | $46.1M | — | September 30, 2026 |
| 19 | JPMorgan Mid Cap Value L | 0.51% | 405K | $45.7M | +11,788 (+3.0%) | August 31, 2026 |
| 20 | Fidelity Extended Market Index | 0.50% | 393K | $44.4M | −4,611 (−1.2%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
OC insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-10-24 | Ro Khanna | Buy | $127.87 | — | — |
| 2025-10-22 | Ro Khanna | Buy | $126.75 | — | — |
| 2025-10-21 | Ro Khanna | Buy | $130.70 | — | — |
| 2025-10-07 | Tommy Tuberville | Sell | $133.34 | — | — |
| 2025-02-06 | Monaco Nicolas Del | Sell | $183.97 | 1,750 | $321,948 |
| 2024-12-13 | Gunner Smith | Sell | $191.19 | 17,450 | $3.3M |
| 2024-10-29 | Tommy Tuberville | Sell | $181.13 | — | — |
| 2024-09-19 | Marcio A Sandri | Sell | $176.50 | 3,051 | $538,502 |
| 2024-09-17 | Marcio A Sandri | Sell | $170.00 | 3,050 | $518,500 |
| 2024-06-27 | Todd W Fister | Sell | $173.65 | 3,000 | $520,950 |
| 2024-06-13 | Todd W Fister | Sell | $180.85 | 3,000 | $542,550 |
| 2024-06-12 | Mari Doerfler | Sell | $182.05 | 240 | $43,692 |
| 2024-05-24 | Marcio A Sandri | Sell | $178.00 | 9,697 | $1.7M |
| 2024-05-21 | Monaco Nicolas Del | Sell | $176.47 | 3,423 | $604,057 |
| 2024-03-14 | Paula Russell | Sell | $162.00 | 3,765 | $609,930 |
| 2024-02-14 | Gunner Smith | Sell | $148.99 | 7,442 | $1.1M |
| 2024-02-05 | Gunner Smith | Sell | $153.36 | 657 | $100,758 |
| 2024-02-02 | Gunner Smith | Sell | $153.73 | 708 | $108,841 |
| 2024-02-01 | Brian Chambers | Sell | $153.57 | 9,100 | $1.4M |
| 2023-11-06 | W Howard Morris | Sell | $122.05 | 350 | $42,718 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
OC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns OC
Institutional investors own 110.4% of Owens Corning's shares and insiders 1.11%. The largest holder is BlackRock Inc with 11.15% of the shares (8.8M), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 5 reduced their stake in the latest filings. Short interest is 3.49% of the float, or 2.10 days of average trading volume. The share count fell 31.9% since 2014.
Related: OC analyst forecast, OC key metrics, OC dividend history. See the OC stock overview for the latest quote and news.
OC ownership FAQ
Who owns the most Owens Corning stock?
The largest shareholders of Owens Corning are BlackRock Inc (11.15%), Vanguard Portfolio Management, LLC (6.92%), AQR Capital Management LLC (4.65%), Vanguard Capital Management, LLC (4.59%), State Street Corp (3.92%).
What percentage of Owens Corning is owned by institutions?
Institutions hold 110.4% of Owens Corning's shares outstanding; insiders hold 1.11%.
Which funds own Owens Corning?
The largest fund holders of Owens Corning are iShares Core S&P Mid-Cap ETF (3.56%), Vanguard MStar Total Stk Mkt Idx Invest (3.24%), First Trust RBA Amer Indl RenaisTM ETF (2.74%), Vanguard Small Cap Index (2.25%), Vanguard MStar Small Cap Value Index (1.47%).
What is Owens Corning's short interest?
2.4M shares of Owens Corning were sold short, 3.49% of the float; at the average daily volume it would take 2.10 days to cover.
Are insiders buying or selling Owens Corning?
Of the latest 20 reported insider transactions in Owens Corning (since November 6, 2023), 3 were purchases and 17 were sales.
How many shares of Owens Corning are outstanding?
Owens Corning has 79.0M shares outstanding, of which 78.2M are in the public float.