13F Insight
DOSSIER · 13F Holders · Q1 2026Most-boughtAI cap-ex
AWI

ARMSTRONG WORLD INDUSTRIES INC

490 institutions still hold ARMSTRONG WORLD INDUSTRIES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 04247x102·490 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 6.9%
vs prior quarter
13F value held
$4.1B
50.0% inst. owned
of float
Holders
490
+38 QoQ
filers reporting
Activity
+38 / −18
+931 added · −786 reduced
this quarter
Concentration
21.01%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

490 institutions reported AWI in Q1 2026. BlackRock, Inc. leads at 21.0% of the visible book. +38 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$858M5.2M0.01%Q1 202602
Vanguard Portfolio Management
CIK 0002100121· Index
$368M2.2M0.02%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$316M1.9M0.01%Q1 202604
LONDON CO OF VIRGINIA
CIK 0001259887
$284M1.7M1.75%Q1 202605
STATE STREET CORP
CIK 0000093751
$233M1.4M0.01%Q1 202606
BANK OF MONTREAL /CAN/
CIK 0000927971
$202M1.2M0.08%Q1 202607
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$180M1.1M0.08%Q1 202608
FULLER & THALER ASSET MANAGEMENT, INC.
CIK 0001082327
$172M1.0M0.58%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$166M1.0M0.01%Q1 202610
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC
CIK 0001021223
$162M984K0.48%Q1 202611
Neuberger Berman Group LLC
CIK 0001465109
$151M916K0.11%Q1 202612
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$139M843K0.03%Q1 202613
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$129M784K0.10%Q1 202614
Capital International Investors
CIK 0001562230
$128M776K0.03%Q1 202615
YACKTMAN ASSET MANAGEMENT LP
CIK 0000905567
$122M742K1.63%Q1 202616
CITADEL ADVISORS LLC
CIK 0001423053
$106M553K0.02%Q4 202517
Alyeska Investment Group, L.P.
CIK 0001453072
$102M533K0.29%Q4 202518
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$95M575K0.15%Q1 202619
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$88M535K0.01%Q1 202620
Gates Capital Management, Inc.
CIK 0001312908
$82M498K2.24%Q1 2026
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