Armstrong World Industries, Inc.
US ˙ NYSE ˙ US04247X1028

SecurityAWI / Armstrong World Industries, Inc.
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership169,098 shares
Latest Disclosed Value $ 27,867,350
Qube Research & Technologies Ltd reports 10.35% decrease in ownership of AWI / Armstrong World Industries, Inc.

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 169,098 shares of Armstrong World Industries, Inc. (US:AWI) valued at $27,867,350 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 188,626 shares of Armstrong World Industries, Inc.. This represents a change in shares of -10.35% during the quarter. The current value of the position is $25,829,720 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)
2026-05-15 2026-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 169,098 -19,528 -10.35 27,867 -22.69 0.0310
2026-02-17 2025-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 188,626 47,262 33.43 36,046 30.09 0.0366
2025-11-14 2025-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 141,364 31,843 29.07 27,709 55.75 0.0286
2025-08-14 2025-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 109,521 51,506 88.78 17,791 117.67 0.0181
2025-05-15 2025-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 58,015 38,444 196.43 8,173 195.59 0.0095
2025-02-14 2024-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 19,571 -9,593 -32.89 2,766 -27.86 0.0036
2024-11-14 2024-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 29,164 13,580 87.14 3,833 117.29 0.0056
2024-08-14 2024-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 15,584 15,584 1,765 0.0028
2024-02-13 2023-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -81,278 -100.00 0 -100.00
2023-11-13 2023-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 81,278 -95,522 -54.03 5,852 -54.94 0.0153
2023-08-14 2023-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 176,800 6,677 3.92 12,988 7.16 0.0472
2023-05-15 2023-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 170,123 -103,175 -37.75 12,120 -35.35 0.0521
2023-02-14 2022-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 273,298 233,630 588.96 18,746 496.40 0.1003
2022-11-14 2022-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 39,668 -86,387 -68.53 3,143 -66.74 0.0187
2022-08-15 2022-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 126,055 34,364 37.48 9,449 14.49 0.0697
2022-05-09 2022-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 91,691 44,915 96.02 8,253 51.93 0.0699
2022-02-10 2021-12-31 13F/A-1 ARMSTRONG WORLD INDS INC COM 04247X102 46,776 15,744 50.73 5,432 83.33 0.0419
2022-02-01 2021-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 46,776 15,744 5,432 0.0420
2021-11-12 2021-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 31,032 31,032 2,963 0.0372
2021-08-13 2021-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -6,978 -100.00 0 -100.00
2021-05-14 2021-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 6,978 -51,769 -88.12 629 -85.61 0.0100
2021-02-16 2020-12-31 13F ARMSTRONG WORLD INDS COM 04247X102 58,747 49,804 556.90 4,370 610.57 0.0621
2020-11-12 2020-09-30 13F ARMSTRONG WORLD INDS COM 04247X102 8,943 -7,180 -44.53 615 -51.07 0.0088
2020-08-14 2020-06-30 13F ARMSTRONG WORLD INDS COM 04247X102 16,123 10,234 173.78 1,257 168.59 0.0184
2020-05-15 2020-03-31 13F ARMSTRONG WORLD INDS COM 04247X102 5,889 5,889 468 0.0192
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.