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AWI

Armstrong World Industries Inc
$160.67 +4.77 (+3.06%) At close · Jul 16
Market Cap
$6.86B
Shares
42,678,835

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.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 471
Total Value: $6,721,610,636
Total Shares: 40,794,743
Showing 1–100 of 475 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 472 13F filers
Top Holder
12.8%
Jun 2023 → Mar 2026 · range 10.9% – 12.8%
of institutional value
Top 5
28.2%
Jun 2023 → Mar 2026 · range 28.2% – 40.6%
of institutional value
Top 10
40.7%
Jun 2023 → Mar 2026 · range 40.7% – 55.9%
of institutional value
HHI
308
Jun 2023 → Mar 2026 · range 308 – 478
Broadly held
Showing 100 of 475
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 7431 CUSIP 04247X102 13F (30d) 38 filings 37 filers Visit website Investor relations