Owens Corning (OC)

Highly Crowded

Held by 600 of 5,944 reporting institutions (97th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

96.64%

QoQ Change

N/A

Total Value

$7.9T

Shares Outstanding

80.5M

Crowding AnalysisHighly Crowded

Holders600of 5,944

Avg: 68

Uncrowded97th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.18x

94th percentile

355 buying301 selling

+102

New

-118

Closed

+1.9M

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 3.5 QHolders: 600

Ownership Concentration

Top 5: 31.1%Top 10: 45.3%

BlackRock,11.8%

VANGUARD PORTFOLIO MANAGEMENT7.1%

VANGUARD CAPITAL MANAGEMENT4.7%

STATE STREET3.9%

DIMENSIONAL FUND ADVISORS3.5%

Others (595)69.0%

Loading crowding analysis...

Conviction-Weighted Ownership

Median weight: 0.06%Avg weight: 0.16%Max: 1.04%High conviction (>1%): 1

BlackRock,

VANGUARD PORTFOLIO MANAGEMENT

VANGUARD CAPITAL MANAGEMENT

STATE STREET

DIMENSIONAL FUND ADVISORS

AQR CAPITAL MANAGEMENT

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS

FIRST TRUST ADVISORS

DAVIS SELECTED ADVISERS

AMERICAN CENTURY COMPANIES

Loading conviction analysis...

Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD PORTFOLIO MANAGEMENT$596M5.5M shr

NEWVANGUARD CAPITAL MANAGEMENT$392M3.6M shr

NEWUBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS$240M2.2M shr

NEWAMERICAN CENTURY COMPANIES$221M2.0M shr

BOUGHTAQR CAPITAL MANAGEMENT$118M1.1M shr

BOUGHTLSV ASSET MANAGEMENT$1.6B14K shr

SOLDBlackRock$152M1.4M shr

BOUGHTDIMENSIONAL FUND ADVISORS$72M646K shr

BOUGHTFIRST TRUST ADVISORS$68M606K shr

SOLDSTATE STREET$63M559K shr

Loading whale moves...

Institutional Trends (8 Quarters)

Loading ownership trends...

Institutional Holders

Loading top holders...