Armstrong World Industries Inc
Ownership
Ownership Structure
Who owns Armstrong World Industries Inc (AWI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.3% of the shares are freely tradable; institutional investors hold 103.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.20 | 5,156,705 | -1.0 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.25 | 2,219,754 | -0.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.55 | 1,923,943 | +0.3 | 06/30/2026 |
| London Company of Virginia | 3.89 | 1,644,407 | -4.6 | 06/30/2026 |
| State Street Corp | 3.40 | 1,438,537 | +1.7 | 06/30/2026 |
| Bank of Montreal | 2.61 | 1,104,610 | -9.9 | 06/30/2026 |
| BMO Capital Markets Corp. | 2.61 | 1,104,610 | -9.9 | 06/30/2026 |
| Fuller & Thaler Asset Management Inc | 2.61 | 1,101,986 | +5.8 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.96 | 2,517,530 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.14 | 1,325,393 | -2.4 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.