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Owens Corning
OC

713 hedge funds and large institutions have $10.8B invested in Owens Corning in 2025 Q3 according to their latest regulatory filings, with 99 funds opening new positions, 260 increasing their positions, 244 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed

50% more funds holding in top 10

Funds holding in top 10: 2 → 3 (+1)

32% more first-time investments, than exits

New positions opened: 99 | Existing positions closed: 75

18% more call options, than puts

Call options by funds: $36.3M | Put options by funds: $30.8M

2% more funds holding

Funds holding: 699 → 713 (+14)

7% more repeat investments, than reductions

Existing positions increased: 260 | Existing positions reduced: 244

1% more capital invested

Capital invested by funds: $10.6B → $10.8B (+$137M)

0.2% more ownership

Funds ownership: 90.94% → 91.14% (+0.2%)

Holders
713
Holders Change
+14
Holders Change %
+2%
% of All Funds
9.36%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
99
Increased
260
Reduced
244
Closed
75
Calls
$36.3M
Puts
$30.8M
Net Calls
+$5.51M
Net Calls Change
+$4.68M

Top Buyers

Rank Fund Capital Flow
1
CET
Clean Energy Transition
United Kingdom
+$78M
2
Select Equity Group
Select Equity Group
New York
+$69.3M
3
JP Morgan Chase
JP Morgan Chase
New York
+$66.7M
4
UBS AM
UBS AM
Illinois
+$66.3M
5
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
+$57.7M

Top Sellers

Rank Fund Capital Flow
1
Nordea Investment Management
Nordea Investment Management
Sweden
-$219M
2
Millennium Management
Millennium Management
New York
-$107M
3
Citadel Advisors
Citadel Advisors
Florida
-$105M
4
Amundi
Amundi
France
-$72M
5
Marshall Wace
Marshall Wace
United Kingdom
-$54.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
M
751
Mirova
France
– -$523K -3,803 Closed
RS
752
R Squared
Hong Kong
– -$374K -2,721 Closed
FIM
753
Freedom Investment Management
Connecticut
– -$339K -2,468 Closed
Vontobel Holding
754
Vontobel Holding
Switzerland
– -$338K -2,457 Closed
HT
755
Headlands Technologies
Illinois
– -$332K -2,411 Closed
GWA
756
Gibson Wealth Advisors
Texas
– -$330K -2,399 Closed
HCMT
757
Highland Capital Management (Tennessee)
Tennessee
– -$297K -2,158 Closed
HP
758
Haven Private
Florida
– -$290K -2,107 Closed
BC
759
Bayforest Capital
United Kingdom
– -$283K -2,055 Closed
IQI
760
Integrated Quantitative Investments
Washington
– -$282K -2,050 Closed
OA
761
Operose Advisors
Wisconsin
– -$255K -1,853 Closed
P
762
Pitcairn
Pennsylvania
– -$250K -1,821 Closed
MA
763
Mutual Advisors
Nebraska
– -$256K -1,757 Closed
TSS
764
Two Sigma Securities
New York
– -$213K -1,546 Closed
NG
765
Norden Group
Utah
– -$207K -1,504 Closed
VSQM
766
V-Square Quantitative Management
Illinois
– -$187K -1,361 Closed
Lazard Asset Management
767
Lazard Asset Management
New York
– -$144K -1,054 Closed
BIG
768
Brooklyn Investment Group
New York
– -$144K -1,048 Closed
Canada Pension Plan Investment Board
769
Canada Pension Plan Investment Board
Ontario, Canada
– -$124K -900 Closed
MIFH
770
Migdal Insurance & Financial Holdings
Israel
– -$30K -221 Closed
WSFS
771
Wilmington Savings Fund Society
Delaware
– -$26.7K -194 Closed
TPWA
772
Twin Peaks Wealth Advisors
California
– -$26K -174 Closed
MTC
773
Matrix Trust Company
Colorado
– -$20K -146 Closed
Optiver Holding
774
Optiver Holding
Netherlands
– -$12.7K -92 Closed
BCMLT
775
Beacon Capital Management LLC (Tennessee)
Tennessee
– -$8K -58 Closed
28 29 30
31
32

OC Hedge Fund Activity: Q3 2025 in Review

713 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Owens Corning (OC) for Q3 2025, worth a combined $10.8B — up 1.3% from $10.6B a quarter earlier.

Buyers outnumbered sellers: 99 funds opened new OC positions and 75 closed out — a net gain of 24 holders — while 260 added to existing stakes and 244 trimmed.

The largest buyer was Clean Energy Transition, opening a new position worth an estimated $78M. The largest seller was Nordea Investment Management, cutting an estimated $219M.

  • 713 institutional investors held Owens Corning (OC) as of Q3 2025, up from 699 in Q2 2025.
  • Funds reported $10.8B of Owens Corning stock for Q3 2025, up 1.3% quarter-over-quarter.
  • 99 funds opened new Owens Corning positions in Q3 2025 and 75 closed out, a net change of +24 holders.
  • The largest Owens Corning buyer in Q3 2025 was Clean Energy Transition, an estimated $78M added.
  • The largest Owens Corning seller in Q3 2025 was Nordea Investment Management, an estimated $219M sold.

Based on aggregated 13F filings for Q3 2025.