Armstrong World Industries, Inc. (AWI) Ownership
AWI ownership summary
as of October 18, 2026- Institutions
- 104.3% of shares outstanding
- Insiders
- 1.55% of shares outstanding
- Shares outstanding
- 42.3M
- Float
- 41.5M shares available to trade
- Short interest
- 3.99% 1.4M shares short
- Days to cover
- 3.96 short interest down 0.2% vs prior month
- Institutions 104.28%
- Insiders 1.55%
AWI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 12.20% | 5.2M | $867.2M | −49,565 (−1.0%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 5.25% | 2.2M | $373.3M | −13,635 (−0.6%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 4.55% | 1.9M | $323.5M | +5,744 (+0.3%) | June 30, 2026 |
| 4 | London Company of Virginia | 3.89% | 1.6M | $276.5M | −78,960 (−4.6%) | June 30, 2026 |
| 5 | State Street Corp | 3.40% | 1.4M | $241.9M | +23,633 (+1.7%) | June 30, 2026 |
| 6 | Bank of Montreal | 2.61% | 1.1M | $185.8M | −120,692 (−9.8%) | June 30, 2026 |
| 7 | BMO Capital Markets Corp. | 2.61% | 1.1M | $185.8M | −120,692 (−9.8%) | June 30, 2026 |
| 8 | Fuller & Thaler Asset Management Inc | 2.61% | 1.1M | $185.3M | +60,632 (+5.8%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.47% | 1.0M | $175.4M | +34,984 (+3.5%) | June 30, 2026 |
| 10 | Citadel Advisors Llc | 2.44% | 1.0M | $173.3M | +235,140 (+29.6%) | June 30, 2026 |
| 11 | Egerton Capital LLP | 2.19% | 925K | $155.6M | +477,358 (+106.5%) | June 30, 2026 |
| 12 | Kayne Anderson Rudnick Investment Management LLC | 2.12% | 894K | $150.3M | −90,237 (−9.2%) | June 30, 2026 |
| 13 | Dimensional Fund Advisors, Inc. | 2.06% | 870K | $146.3M | +26,894 (+3.2%) | June 30, 2026 |
| 14 | Capital Research & Mgmt Co - Division 3 | 1.88% | 795K | $133.6M | +18,416 (+2.4%) | June 30, 2026 |
| 15 | Timucuan Asset Management Inc/FL | 1.86% | 784K | $131.9M | +220,675 (+39.2%) | June 30, 2026 |
| 16 | Neuberger Berman Group LLC | 1.81% | 763K | $128.3M | −152,816 (−16.7%) | June 30, 2026 |
| 17 | Yacktman Asset Management Co | 1.79% | 755K | $127.0M | +13,007 (+1.8%) | June 30, 2026 |
| 18 | AQR Capital Management LLC | 1.68% | 712K | $119.7M | −407,958 (−36.4%) | June 30, 2026 |
| 19 | River Road Asset Management, LLC | 1.64% | 694K | $116.7M | +415,554 (+149.1%) | June 30, 2026 |
| 20 | Two Sigma Investments LLC | 1.38% | 583K | $98.1M | −200,562 (−25.6%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 1.5M shares and 9 cut 1.2M.
AWI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.96% | 2.5M | $423.3M | +534 (+0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.21% | 1.4M | $228.3M | −1,465 (−0.1%) | August 31, 2026 |
| 3 | FullerThaler Behavioral Sm-Cp Eq R6 | 2.49% | 1.1M | $177.0M | +63,800 (+6.5%) | June 30, 2026 |
| 4 | Vanguard Small Cap Index | 2.25% | 951K | $159.9M | −30,988 (−3.2%) | September 30, 2026 |
| 5 | American Funds SMALLCAP World A | 2.01% | 849K | $142.7M | +75,746 (+9.8%) | September 30, 2026 |
| 6 | Touchstone Mid Cap Y | 1.86% | 787K | $132.4M | −291,171 (−27.0%) | September 30, 2026 |
| 7 | AMG Yacktman I | 1.42% | 600K | $100.9M | — | September 30, 2026 |
| 8 | Vanguard MStar Small Cap Growth Indx Inv | 1.25% | 530K | $89.1M | −33,680 (−6.0%) | September 30, 2026 |
| 9 | iShares S&P Small-Cap 600 Growth ETF | 0.93% | 391K | $65.8M | — | September 30, 2026 |
| 10 | State Street SPDR Port S&P 600 Sm CpETF | 0.91% | 385K | $64.7M | — | September 30, 2026 |
| 11 | Neuberger Genesis Inv | 0.87% | 368K | $62.0M | −65,124 (−15.0%) | September 30, 2026 |
| 12 | Vanguard Tax-Managed Small Cap Adm | 0.66% | 278K | $46.7M | — | September 30, 2026 |
| 13 | State Street® SPDR® S&P 600™ Sm Cp GrETF | 0.58% | 243K | $40.9M | — | September 30, 2026 |
| 14 | Strategic Advisers U.S. Total Stock | 0.54% | 228K | $38.4M | — | August 31, 2026 |
| 15 | Schwab US Small-Cap ETF™ | 0.53% | 222K | $37.4M | +144 (+0.1%) | September 30, 2026 |
| 16 | Fidelity Extended Market Index | 0.49% | 207K | $34.9M | −2,498 (−1.2%) | August 31, 2026 |
| 17 | BNP Paribas US Small Cap ClassicC | 0.48% | 205K | $34.4M | −392 (−0.2%) | August 31, 2026 |
| 18 | Baron Real Estate Institutional | 0.47% | 199K | $33.5M | +199,208 (0.0%) | September 30, 2026 |
| 19 | DFA US Small Cap I | 0.46% | 194K | $32.6M | — | August 31, 2026 |
| 20 | Xtrackers MSCI World Swap ETF 1C | 0.44% | 188K | $31.6M | −1,182 (−0.6%) | December 31, 2025 |
Funds report holdings monthly or quarterly; dates differ by fund.
AWI insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-06-17 | Lisa C. McClain | Sell | $150.35 | — | — |
| 2025-06-11 | Lisa C. McClain | Buy | $153.29 | — | — |
| 2023-12-28 | Victor Grizzle | Sell | $99.02 | 22,914 | $2.3M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AWI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AWI
Institutional investors own 104.3% of Armstrong World Industries's shares and insiders 1.55%. The largest holder is BlackRock Inc with 12.20% of the shares (5.2M), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 9 reduced their stake in the latest filings. Short interest is 3.99% of the float, or 3.96 days of average trading volume. The share count fell 21.4% since 2014.
Related: AWI analyst forecast, AWI key metrics, AWI dividend history. See the AWI stock overview for the latest quote and news.
AWI ownership FAQ
Who owns the most Armstrong World Industries stock?
The largest shareholders of Armstrong World Industries are BlackRock Inc (12.20%), Vanguard Portfolio Management, LLC (5.25%), Vanguard Capital Management, LLC (4.55%), London Company of Virginia (3.89%), State Street Corp (3.40%).
What percentage of Armstrong World Industries is owned by institutions?
Institutions hold 104.3% of Armstrong World Industries's shares outstanding; insiders hold 1.55%.
Which funds own Armstrong World Industries?
The largest fund holders of Armstrong World Industries are iShares Core S&P Small-Cap ETF (5.96%), Vanguard MStar Total Stk Mkt Idx Invest (3.21%), FullerThaler Behavioral Sm-Cp Eq R6 (2.49%), Vanguard Small Cap Index (2.25%), American Funds SMALLCAP World A (2.01%).
What is Armstrong World Industries's short interest?
1.4M shares of Armstrong World Industries were sold short, 3.99% of the float; at the average daily volume it would take 3.96 days to cover.
Are insiders buying or selling Armstrong World Industries?
Of the latest 3 reported insider transactions in Armstrong World Industries (since December 28, 2023), 1 were purchases and 2 were sales.
How many shares of Armstrong World Industries are outstanding?
Armstrong World Industries has 42.3M shares outstanding, of which 41.5M are in the public float.