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Jeremy Grantham's Owens Corning (OC) position

Yes: as of Q1 2026, Jeremy Grantham holds 84K shares of OC worth $9.1M (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$9.1M
Shares held
84K
% of portfolio
0.0%
Est. average buy price (i)
$106.10
est. since Q1 2021
Quarter-end price
$108.22

Estimated trade prices

Average price in quarters with purchases
$99.96
Average prices in quarters with sales
  • Q3 2025: $146.73 (6K shares sold)
  • Q2 2025: $138.09 (20K shares sold)
  • Q4 2024: $186.85 (23K shares sold)
  • Q2 2024: $173.20 (25K shares sold)
  • Q1 2024: $152.55 (7K shares sold)
  • Q4 2023: $132.46 (16K shares sold)
  • Q3 2023: $137.41 (10K shares sold)
  • Q2 2023: $109.58 (62K shares sold)
  • Q1 2023: $94.64 (22K shares sold)
  • Q4 2022: $87.66 (20K shares sold)
  • Q1 2022: $91.89 (4K shares sold)
  • Q4 2021: $90.77 (14K shares sold)

OC price vs Grantham's position

Dates
$50$100$150$2002026Sold 6K shares (13.8%) · Q3 2025. Average closing price $146.73 · Price range $136.56–$157.696KsharessoldAdded 25K shares (68.7%) · Q4 2025. Average closing price $117.37 · Price range $98.28–$141.3025KsharespurchasedAdded 21K shares (34.4%) · Q1 2026. Average closing price $119.21 · Price range $99.96–$138.4521Ksharespurchased← Earlier —6 purchases, 11 sells
Average closing price · filing quarter
$119.21
Price range · filing quarter
$99.96 – $138.45

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +21K +$2.6M +34.4% 84K May 14, 2026
Q4 2025 Added +25K +$3.0M +68.7% 62K Feb 17, 2026
Q3 2025 Reduced −6K −$871K −13.8% 37K Nov 13, 2025
Q2 2025 Reduced −20K −$2.8M −32.3% 43K Aug 13, 2025
Q1 2025 Added +2K +$369K +3.7% 63K May 14, 2025
Q4 2024 Reduced −23K −$4.4M −27.7% 61K Feb 13, 2025
Q3 2024 Added +216 +$36K +0.3% 85K Nov 13, 2024
Q2 2024 Reduced −25K −$4.4M −23.0% 84K Aug 13, 2024
Q1 2024 Reduced −7K −$1.1M −6.2% 109K May 14, 2024
Q4 2023 Reduced −16K −$2.1M −12.1% 117K Feb 13, 2024
Q3 2023 Reduced −10K −$1.3M −6.8% 133K Nov 13, 2023
Q2 2023 Reduced −62K −$6.8M −30.4% 142K Aug 14, 2023
Q1 2023 Reduced −22K −$2.0M −9.5% 205K May 12, 2023
Q4 2022 Reduced −20K −$1.7M −8.1% 226K Feb 13, 2023
Q3 2022 Added +37K +$3.1M +17.9% 246K Nov 10, 2022
Q2 2022 Added +13K +$1.1M +6.5% 209K Aug 12, 2022
Q1 2022 Reduced −4K −$365K −2.0% 196K May 13, 2022
Q4 2021 Reduced −14K −$1.3M −6.6% 200K Feb 11, 2022
Q3 2021 Added +45K +$4.2M +26.6% 214K Nov 12, 2021
Q2 2021 Added +34K +$3.4M +25.1% 169K Aug 12, 2021
Q1 2021 First covered 135K May 13, 2021
Data through Q1 2026 · filed May 14, 2026
21 grouped rows from 21 quarters

More Grantham positions

Common questions

Does Jeremy Grantham own OC?

Yes. As of Q1 2026, Jeremy Grantham disclosed 84K shares of OC, worth $9.1M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy OC?

Jeremy Grantham held OC since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jeremy Grantham sell OC?

The quarter-by-quarter table above shows each sale and reduction Jeremy Grantham disclosed in OC. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of OC does Jeremy Grantham own?

Jeremy Grantham disclosed 84K shares of OC as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jeremy Grantham pay for OC?

Jeremy Grantham began building the OC position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.