AWI · Armstrong World Industries Inc · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding AWI
All superinvestors →Holder Concentration
Across 479 13F filersWho Holds AWI
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 478 filers, like-for-like change -0.2%; actively managed books +0.1%; index-like books -1.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 53.2% | 255 | +0.4% |
| Exempt adviser | 1.2% | 6 | +78.7% |
| Adviser | 5.7% | 12 | +8.1% |
| Bank | 10.1% | 27 | -2.8% |
| Insurer | 0.6% | 3 | -3.0% |
| Broker-dealer | 0.0% | 1 | -4.6% |
| Benefit plan | 0.4% | 6 | +33.2% |
| Non-US | 3.6% | 12 | -1.4% |
| Holding company | 16.5% | 9 | -6.7% |
| Unknown | 8.8% | 147 | +0.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 29.9% | 46 | -1.0% |
| Systematic-like | 10.2% | 35 | +11.2% |
| Concentrated | 5.0% | 73 | +48.0% |
| Diversified active | 54.9% | 324 | -4.5% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | -100.0% |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 54.2% | 267 | -2.4% |
| Medium turnover | 18.2% | 101 | -7.4% |
| High turnover | 15.4% | 75 | +19.3% |
| Unknown | 12.2% | 35 | +0.7% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 12.5% | 63 | +1.6% |
| Medium horizon | 13.7% | 73 | -0.2% |
| Long horizon | 61.9% | 311 | -4.8% |
| Unknown | 11.8% | 31 | +28.6% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 1.1% | 92 | +12.7% |
| $1B to $10B | 13.3% | 146 | +17.5% |
| $10B to $100B | 24.3% | 161 | +1.5% |
| $100B or more | 61.2% | 79 | -4.3% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 2.8% | 128 | -24.8% |
| Pooled investment vehicles | 15.6% | 50 | +7.4% |
| Registered funds and BDCs | 20.6% | 30 | +1.2% |
| Pension and profit sharing plans | 0.5% | 4 | +3.9% |
| Insurance companies | 0.0% | 2 | +0.8% |
| Charitable organizations | 0.0% | 2 | -0.6% |
| Governments and sovereign funds | 1.8% | 8 | -6.1% |
| Corporations | 0.0% | 1 | -40.8% |
| Other investment advisers | 0.1% | 8 | 0.0% |
| Other | 0.1% | 1 | -11.4% |
| Diversified | 11.8% | 21 | -0.7% |
| Unknown | 46.8% | 223 | -0.9% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 21.8% | 70 | +2.2% |
| Private equity funds | 0.3% | 16 | -44.1% |
| Venture capital funds | 0.0% | 2 | -28.2% |
| Real estate funds | 0.0% | 4 | +70.5% |
| Liquidity funds | 0.0% | 1 | 0.0% |
| Securitized asset funds | 0.7% | 1 | -0.4% |
| Other private funds | 3.0% | 23 | +2.8% |
| Mixed private funds | 0.2% | 2 | +178.7% |
| Private funds, type not stated | 4.0% | 6 | -4.9% |
| No private funds | 24.3% | 136 | +1.8% |
| Unknown | 45.6% | 217 | -2.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 85.2% | 394 | -1.3% |
| Outside the US | 14.8% | 84 | +6.9% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 5 holders with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
478 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 42.3% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies AWI's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not AWI, quarter ended Jun 30, 2026Found through its holder-overlap peers: MMS, EPAC, SGI, ESAB, MC, CXT, UFPI, AXS, BRC, VCEL, DORM, EXLS, FND, THO, EEFT, AIN, CCSI, IBP, ABG, NEOG. 1,101 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,184,681,495 7 held | ESAB, IBP, NEOG |
| 2 | ABRAMS CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated | $888,050,369 2 held | SGI, ABG |
| 3 | Boston Partners Registered adviser, Diversified active | $718,855,504 10 held | SGI, UFPI, MMS |
| 4 | Select Equity Group, L.P. Registered adviser, Diversified active | $697,186,974 1 held | SGI |
| 5 | WINDACRE PARTNERSHIP LLC Registered adviser, Concentrated | $660,151,520 1 held | SGI |
| 6 | Linonia Partnership LP Registered adviser, Concentrated | $519,372,089 1 held | SGI |
| 7 | WASATCH ADVISORS LP Registered adviser, Diversified active | $509,798,012 5 held | MC, FND, UFPI |
| 8 | FIL Ltd Non-US, Diversified active | $507,341,732 5 held | ESAB, IBP, SGI |
| 9 | BROWNING WEST LP Registered adviser, Concentrated | $499,401,336 1 held | SGI |
| 10 | Artisan Partners Limited Partnership Registered adviser, Diversified active | $415,898,954 3 held | SGI, ABG, IBP |
Fund Ownership of AWI by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 25.39% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.82% | 1,616,213 |
| Index ETFs | 21.56% | 9,113,444 |
| Active ETFs | 1.18% | 499,693 |
| Active funds | 15.32% | 6,475,189 |
| Unclassified | 0.71% | 298,217 |
| All registered funds | 42.60% | 18,002,756 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $827,238,606 | 11.84% | 5,156,705 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $356,092,936 | 5.10% | 2,219,754 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $308,638,936 | 4.42% | 1,923,943 | Shares | 2026-08-13 | |
| Large LONDON CO OF VIRGINIA Registered adviser | $263,795,770 | 3.78% | 1,644,407 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $230,770,105 | 3.30% | 1,438,537 | Shares | 2026-09-22 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $177,201,535 | 2.54% | 1,104,610 | Shares | 2026-08-12 | |
| Large FULLER & THALER ASSET MANAGEMENT, INC. Registered adviser | $176,780,594 | 2.53% | 1,101,986 | Shares | 2026-08-12 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $167,368,751 | 2.40% | 1,043,316 | Shares | 2026-08-12 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $165,300,136 | 2.37% | 1,030,421 | Shares | 2026-09-02 | |
| Mid Egerton Capital (UK) LLP Registered adviser | $160,852,193 | 2.30% | 993,344 | Shares | 2026-10-20 | |
| Large KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Registered adviser | $143,428,794 | 2.05% | 894,083 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $139,540,694 | 2.00% | 869,846 | Shares | 2026-08-11 | |
| Mega Capital International Investors Adviser | $127,454,973 | 1.82% | 794,508 | Shares | 2026-08-12 | |
| Mid TIMUCUAN ASSET MANAGEMENT INC/FL Adviser | $125,789,492 | 1.80% | 784,126 | Shares | 2026-08-13 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $122,431,580 | 1.75% | 763,194 | Shares | 2026-08-13 | |
| Mid YACKTMAN ASSET MANAGEMENT LP Registered adviser | $121,108,116 | 1.73% | 754,944 | Shares | 2026-08-11 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $114,154,708 | 1.63% | 711,599 | Shares | 2026-08-14 | |
| Mid River Road Asset Management, LLC Registered adviser | $111,365,168 | 1.59% | 694,210 | Shares | 2026-07-17 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $93,557,104 | 1.34% | 583,201 | Shares | 2026-08-14 | |
| Mega NORGES BANK Non-US | $90,221,170 | 1.29% | 562,406 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $84,734,806 | 1.21% | 528,206 | Shares | 2026-08-14 | |
| Mid Gates Capital Management, Inc. Registered adviser | $82,340,858 | 1.18% | 513,283 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $79,379,024 | 1.14% | 494,820 | Shares | 2026-08-14 | |
| Mid Van Berkom & Associates Inc. Registered adviser | $74,584,551 | 1.07% | 464,933 | Shares | 2026-08-05 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $74,556,316 | 1.07% | 464,757 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $73,920,411 | 1.06% | 460,793 | Shares | 2026-08-13 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $72,700,739 | 1.04% | 453,190 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $70,490,954 | 1.01% | 439,415 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $69,762,483 | 1.00% | 434,874 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $67,443,932 | 0.97% | 420,421 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $64,325,211 | 0.92% | 400,980 | Shares | 2026-08-14 | |
| Mid COOKE & BIELER LP Registered adviser | $63,542,303 | 0.91% | 392,406 | Shares | 2026-10-21 | |
| Large Point72 Asset Management, L.P. Registered adviser | $59,445,556 | 0.85% | 370,562 | Shares | 2026-08-14 | |
| Large NATIXIS ADVISORS, LLC Registered adviser | $57,602,169 | 0.82% | 359,071 | Shares | 2026-08-14 | |
| Mega JONES FINANCIAL COMPANIES LLLP | $56,015,615 | 0.80% | 349,181 | Shares | 2026-08-14 | |
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser | $53,419,860 | 0.76% | 333,000 | Shares | 2026-08-14 | |
| Large Balyasny Asset Management L.P. Registered adviser | $52,809,622 | 0.76% | 329,196 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $51,728,708 | 0.74% | 322,458 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $46,761,625 | 0.67% | 291,495 | Shares | 2026-08-13 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $46,741,895 | 0.67% | 291,372 | Shares | 2026-08-13 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $43,521,464 | 0.62% | 271,297 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $43,411,732 | 0.62% | 270,613 | Shares | 2026-08-06 | |
| Mid SCOPUS ASSET MANAGEMENT, L.P. Registered adviser | $36,896,600 | 0.53% | 230,000 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $35,670,829 | 0.51% | 222,359 | Shares | 2026-08-11 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $35,554,205 | 0.51% | 221,632 | Shares | 2026-09-23 | |
| Mega DEUTSCHE BANK AG\ Non-US | $35,297,853 | 0.51% | 220,034 | Shares | 2026-08-07 | |
| Large Gotham Asset Management, LLC Registered adviser | $34,405,437 | 0.49% | 214,471 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $33,390,941 | 0.48% | 208,147 | Shares | 2026-08-12 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $33,006,735 | 0.47% | 205,752 | Shares | 2026-08-04 | |
| Mid Harvey Partners, LLC Registered adviser | $32,900,056 | 0.47% | 205,087 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $32,480,236 | 0.47% | 202,470 | Shares | 2026-08-14 | |
| Small SOUTHERNSUN ASSET MANAGEMENT, LLC | $32,224,367 | 0.46% | 200,875 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $32,083,836 | 0.46% | 199,999 | Shares | 2026-08-12 | |
| Mid Arbejdsmarkedets Tillaegspension | $28,891,642 | 0.41% | 180,100 | Shares | 2026-07-17 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC Registered adviser | $28,417,921 | 0.41% | 177,147 | Shares | 2026-08-07 | |
| Large Public Sector Pension Investment Board Non-US | $28,374,447 | 0.41% | 176,876 | Shares | 2026-08-13 | |
| Mid Global Alpha Capital Management Ltd. Adviser | $27,912,598 | 0.40% | 173,997 | Shares | 2026-08-13 | |
| Mega Allianz Asset Management GmbH | $27,580,849 | 0.39% | 171,929 | Shares | 2026-09-02 | |
| Mid Junto Capital Management LP | $27,405,029 | 0.39% | 170,833 | Shares | 2026-08-14 | |
| Mid SG Capital Management LLC Registered adviser | $26,607,582 | 0.38% | 165,862 | Shares | 2026-08-07 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $25,833,234 | 0.37% | 161,035 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $25,626,612 | 0.37% | 159,747 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $25,338,820 | 0.36% | 157,953 | Shares | 2026-08-13 | |
| Large HRT FINANCIAL LP | $25,043,807 | 0.36% | 156,114 | Shares | 2026-08-14 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $24,197,111 | 0.35% | 150,836 | Shares | 2026-08-14 | |
| Large BANK OF NOVA SCOTIA Bank | $19,271,896 | 0.28% | 120,134 | Shares | 2026-08-12 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $19,194,732 | 0.27% | 119,653 | Shares | 2026-08-13 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $16,266,588 | 0.23% | 101,400 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $15,827,517 | 0.23% | 98,663 | Shares | 2026-08-14 | |
| Mega California Public Employees Retirement System | $15,776,986 | 0.23% | 98,348 | Shares | 2026-08-14 | |
| Mega Amundi Holding company | $15,248,401 | 0.22% | 95,053 | Shares | 2026-08-11 | |
| Large Assenagon Asset Management S.A. | $14,288,865 | 0.20% | 88,241 | Shares | 2026-10-15 | |
| Mega Swiss National Bank | $13,796,120 | 0.20% | 86,000 | Shares | 2026-08-11 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $13,598,642 | 0.19% | 84,769 | Shares | 2026-08-12 | |
| Large Trexquant Investment LP Registered adviser | $13,346,141 | 0.19% | 83,195 | Shares | 2026-08-14 | |
| Large VOLORIDGE INVESTMENT MANAGEMENT, LLC Registered adviser | $12,552,544 | 0.18% | 78,248 | Shares | 2026-08-14 | |
| Mid SCHWARTZ INVESTMENT COUNSEL INC Registered adviser | $12,512,760 | 0.18% | 78,000 | Shares | 2026-07-27 | |
| Mega ROYAL BANK OF CANADA Bank | $12,389,876 | 0.18% | 77,234 | Shares | 2026-08-14 | |
| Mid Engineers Gate Manager LP | $11,847,177 | 0.17% | 73,851 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $11,236,778 | 0.16% | 70,046 | Shares | 2026-08-11 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $11,233,089 | 0.16% | 70,023 | Shares | 2026-08-14 | |
| Large WCM INVESTMENT MANAGEMENT, LLC Registered adviser | $11,078,444 | 0.16% | 69,059 | Shares | 2026-08-13 | |
| Large ING GROEP NV Bank | $10,809,580 | 0.15% | 67,383 | Shares | 2026-08-13 | |
| Mid SummitTX Capital, L.P. Registered adviser | $10,790,651 | 0.15% | 67,265 | Shares | 2026-08-14 | |
| Large Quantinno Capital Management LP Registered adviser | $10,483,286 | 0.15% | 65,349 | Shares | 2026-08-13 | |
| Large Man Group plc | $10,444,625 | 0.15% | 65,108 | Shares | 2026-08-14 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $9,963,686 | 0.14% | 62,110 | Shares | 2026-08-13 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $9,907,699 | 0.14% | 61,761 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $9,797,169 | 0.14% | 61,072 | Shares | 2026-08-14 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $9,761,075 | 0.14% | 60,847 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $9,746,316 | 0.14% | 60,755 | Shares | 2026-08-14 | |
| Large Treasurer of the State of North Carolina | $9,582,688 | 0.14% | 59,735 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $8,625,141 | 0.12% | 53,766 | Shares | 2026-08-24 | |
| Mega UBS Group AG Bank | $8,378,414 | 0.12% | 52,228 | Shares | 2026-08-13 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $8,016,187 | 0.11% | 49,970 | Shares | 2026-08-12 | |
| Mid Illinois Municipal Retirement Fund | $7,849,831 | 0.11% | 48,933 | Shares | 2026-08-12 | |
| Large TEACHER RETIREMENT SYSTEM OF TEXAS Benefit plan | $7,759,996 | 0.11% | 48,373 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $7,710,587 | 0.11% | 48,065 | Shares | 2026-08-14 | |
| Small Taylor Hoffman Capital Management LLC Registered adviser | $7,572,305 | 0.11% | 47,203 | Shares | 2026-08-11 | |
| Large KBC Group NV | $7,491,614 | 0.11% | 46,700 | Shares | 2026-08-05 |
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