阿姆斯壯世界工業公司
US ˙ NYSE ˙ US04247X1028

SecurityAWI / Armstrong World Industries, Inc.
InstitutionAlgert Global Llc
Latest Disclosed Ownership111,061 shares
Latest Disclosed Value $ 18,303
Algert Global Llc reports 2.41% decrease in ownership of AWI / Armstrong World Industries, Inc.

On May 14, 2026 - Algert Global Llc filed a 13F-HR form disclosing ownership of 111,061 shares of Armstrong World Industries, Inc. (US:AWI) valued at $18,302,853 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 113,808 shares of Armstrong World Industries, Inc.. This represents a change in shares of -2.41% during the quarter. The current value of the position is $16,964,568 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 111,061 -2,747 -2.41 18 -14.29 0.2754
2026-02-17 2025-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 113,808 25,146 28.36 22 23.53 0.3391
2025-11-14 2025-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 88,662 24,340 37.84 17 70.00 0.2909
2025-08-14 2025-06-30 13F RMSTRONG WORLD INDS INC COM 04247X102 64,322 57,592 855.75 10 0.2189
2025-05-13 2025-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 6,730 110 1.66 1 0.0234
2025-02-14 2024-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 6,620 6,620 1 0.0220
2024-11-12 2024-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -8,931 -100.00 0 -100.00
2024-08-15 2024-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 8,931 8,931 1 0.0336
2024-05-15 2024-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -131,499 -100.00 0 -100.00
2024-02-14 2023-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 131,499 38,105 40.80 13 100.00 0.5207
2023-11-13 2023-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 93,394 1,976 2.16 7 0.00 0.3161
2023-08-14 2023-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 91,418 72,995 396.22 7 500.00 0.2923
2023-05-12 2023-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 18,423 18,423 1 0.0619
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.