Who owns Armstrong World Industries (AWI)
Which tracked institutional funds hold AWI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AWI company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
92 tracked funds added or opened AWI while 134 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AWI’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes AWI more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AWI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 442 tracked filers holding AWI, 226 increased or opened the position and 265 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AWI between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 28
- BALYASNY ASSET MANAGEMENT L.P.$53M
- ROYCE & ASSOCIATES LP$11M
- WCM INVESTMENT MANAGEMENT, LLC$11M
- SummitTX Capital, L.P.$11M
- CAPITAL FUND MANAGEMENT S.A.$10M
- D. E. Shaw & Co., Inc.$10M
Full exits 36
- Van Berkom & Associates Inc.$74M
- NATIXIS ADVISORS, LLC$55M
- Woodline Partners LP$28M
- Amundi$27M
- SG Americas Securities, LLC$21M
- Janney Montgomery Scott LLC$11M
Largest adds
- Egerton Capital (UK) LLP$75M
- River Road Asset Management, LLC$65M
- Qube Research & Technologies Ltd$43M
- CITADEL ADVISORS LLC$34M
- BlackRock, Inc.$33M
- TIMUCUAN ASSET MANAGEMENT INC/FL$33M
Largest trims
- AQR CAPITAL MANAGEMENT LLC$66M
- Alyeska Investment Group, L.P.$43M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$41M
- TWO SIGMA INVESTMENTS, LP$36M
- NEUBERGER BERMAN GROUP LLC$29M
- Allspring Global Investments Holdings, LLC$27M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 5,156,705 | $827M | 13.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 2,219,754 | $356M | 5.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,923,943 | $309M | 4.8% | 2026-Q2 |
| LONDON CO OF VIRGINIA trimmed | 1,644,407 | $264M | 4.1% | 2026-Q2 |
| STATE STREET CORP added | 1,438,537 | $231M | 3.6% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 1,104,610 | $177M | 2.8% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,101,986 | $177M | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,043,316 | $167M | 2.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,030,421 | $165M | 2.6% | 2026-Q2 |
| Egerton Capital (UK) LLP added | 925,394 | $148M | 2.3% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC trimmed | 894,083 | $143M | 2.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 869,846 | $140M | 2.2% | 2026-Q2 |
| Capital International Investors added | 794,508 | $127M | 2.0% | 2026-Q2 |
| TIMUCUAN ASSET MANAGEMENT INC/FL added | 784,126 | $126M | 2.0% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC trimmed | 763,194 | $122M | 1.9% | 2026-Q2 |
| YACKTMAN ASSET MANAGEMENT LP added | 754,944 | $121M | 1.9% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 711,599 | $114M | 1.8% | 2026-Q2 |
| River Road Asset Management, LLC added | 694,210 | $111M | 1.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 583,201 | $94M | 1.5% | 2026-Q2 |
| NORGES BANK trimmed | 562,406 | $90M | 1.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 528,206 | $85M | 1.3% | 2026-Q2 |
| Gates Capital Management, Inc. added | 513,283 | $82M | 1.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. trimmed | 494,820 | $79M | 1.2% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 464,757 | $75M | 1.2% | 2026-Q2 |
| FMR LLC added | 460,793 | $74M | 1.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 453,190 | $73M | 1.1% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 439,415 | $70M | 1.1% | 2026-Q2 |
| Invesco Ltd. added | 434,874 | $70M | 1.1% | 2026-Q2 |
| Allianz Asset Management GmbH added | 433,458 | $71M | 1.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 420,421 | $67M | 1.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 400,980 | $64M | 1.0% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 370,562 | $59M | 0.9% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 349,181 | $57M | 0.9% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 333,000 | $53M | 0.8% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 329,196 | $53M | 0.8% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 322,458 | $52M | 0.8% | 2026-Q2 |
| NORTHERN TRUST CORP added | 291,495 | $47M | 0.7% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 291,372 | $47M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 271,297 | $44M | 0.7% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 270,613 | $43M | 0.7% | 2026-Q2 |
| SCOPUS ASSET MANAGEMENT, L.P. added | 230,000 | $37M | 0.6% | 2026-Q2 |
| COOKE & BIELER LP added | 229,378 | $37M | 0.6% | 2026-Q2 |
| Nuveen, LLC added | 222,359 | $36M | 0.6% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 221,632 | $36M | 0.6% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 220,034 | $35M | 0.6% | 2026-Q2 |
| Gotham Asset Management, LLC added | 214,471 | $34M | 0.5% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 208,147 | $33M | 0.5% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 205,752 | $33M | 0.5% | 2026-Q2 |
| Harvey Partners, LLC added | 205,087 | $33M | 0.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 202,470 | $32M | 0.5% | 2026-Q2 |
| SOUTHERNSUN ASSET MANAGEMENT, LLC added | 200,875 | $32M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 199,999 | $32M | 0.5% | 2026-Q2 |
| Arbejdsmarkedets Tillaegspension added | 180,100 | $29M | 0.5% | 2026-Q2 |
| RICE HALL JAMES & ASSOCIATES, LLC added | 177,147 | $28M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 176,876 | $28M | 0.4% | 2026-Q2 |
| Global Alpha Capital Management Ltd. trimmed | 173,997 | $28M | 0.4% | 2026-Q2 |
| Junto Capital Management LP trimmed | 170,833 | $27M | 0.4% | 2026-Q2 |
| SG Capital Management LLC added | 165,862 | $27M | 0.4% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 161,035 | $26M | 0.4% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 159,747 | $26M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 157,953 | $25M | 0.4% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 150,836 | $24M | 0.4% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 136,597 | $22M | 0.3% | 2026-Q2 |
| BANK OF NOVA SCOTIA added | 120,134 | $19M | 0.3% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 119,653 | $19M | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 101,400 | $16M | 0.3% | 2026-Q2 |
| Legal & General Group Plc trimmed | 98,663 | $16M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 98,348 | $16M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 86,000 | $14M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 84,769 | $14M | 0.2% | 2026-Q2 |
| Trexquant Investment LP trimmed | 83,195 | $13M | 0.2% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 78,248 | $13M | 0.2% | 2026-Q2 |
| SCHWARTZ INVESTMENT COUNSEL INC | 78,000 | $13M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 77,234 | $12M | 0.2% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 73,851 | $12M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 70,046 | $11M | 0.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP new | 70,023 | $11M | 0.2% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC new | 69,059 | $11M | 0.2% | 2026-Q2 |
| ING GROEP NV trimmed | 67,383 | $11M | 0.2% | 2026-Q2 |
| SummitTX Capital, L.P. new | 67,265 | $11M | 0.2% | 2026-Q2 |
| Quantinno Capital Management LP trimmed | 65,349 | $10M | 0.2% | 2026-Q2 |
| Man Group plc trimmed | 65,108 | $10M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 62,110 | $10M | 0.2% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 61,761 | $10M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 61,072 | $10M | 0.2% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 60,847 | $10M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. new | 60,755 | $10M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 53,766 | $9M | 0.1% | 2026-Q2 |
| UBS Group AG trimmed | 52,228 | $8M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 49,970 | $8M | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund added | 48,933 | $8M | 0.1% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS added | 48,373 | $8M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 48,065 | $8M | 0.1% | 2026-Q2 |
| Taylor Hoffman Capital Management LLC added | 47,203 | $8M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 45,136 | $7M | 0.1% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 44,798 | $7M | 0.1% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 44,393 | $7M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 42,729 | $7M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 40,921 | $7M | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 39,727 | $6M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.