Armstrong World Industries, Inc.
US ˙ NYSE ˙ US04247X1028

SecurityAWI / Armstrong World Industries, Inc.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership57,026 shares
Latest Disclosed Value $ 9,397,885
Prudential Financial Inc reports 33.67% decrease in ownership of AWI / Armstrong World Industries, Inc.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 57,026 shares of Armstrong World Industries, Inc. (US:AWI) valued at $9,397,885 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 85,969 shares of Armstrong World Industries, Inc.. This represents a change in shares of -33.67% during the quarter. The current value of the position is $8,710,722 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)
2026-05-13 2026-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 57,026 -28,943 -33.67 9,398 -43.16 0.0065
2026-02-13 2025-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 85,969 -616,510 -87.76 16,532 -87.99 0.0200
2025-11-13 2025-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 702,479 648,174 1,193.58 137,693 1,460.96 0.1636
2025-08-12 2025-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 54,305 -40,326 -42.61 8,821 -33.83 0.0114
2025-05-13 2025-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 94,631 -77,861 -45.14 13,332 -45.32 0.0190
2025-02-11 2024-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 172,492 -45,904 -21.02 24,378 -15.07 0.0334
2024-11-14 2024-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 218,396 -52,127 -19.27 28,704 -6.30 0.0404
2024-08-13 2024-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 270,523 75,517 38.73 30,634 26.46 0.0460
2024-05-14 2024-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 195,006 -378,668 -66.01 24,224 -57.05 0.0341
2024-02-13 2023-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 573,674 319,030 125.28 56,404 207.64 0.0852
2023-11-13 2023-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 254,644 248,664 4,158.26 18,334 3,947.24 0.0288
2023-08-11 2023-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,980 34 0.57 454 0.44 0.0007
2023-05-12 2023-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,946 328 5.84 451 17.14 0.0007
2023-02-14 2022-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,618 262 4.89 385 -9.41 0.0006
2022-11-04 2022-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,356 -210 -3.77 425 1.43 0.0007
2022-08-15 2022-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,566 -287,859 -98.10 419 -98.41 0.0007
2022-05-13 2022-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 293,425 284,464 3,174.47 26,411 2,581.32 0.0351
2022-02-14 2021-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 8,961 3,314 58.69 985 74.03 0.0012
2021-11-15 2021-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,647 -186 -3.19 566 -9.58 0.0008
2021-08-16 2021-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,833 465 8.66 626 29.34 0.0009
2021-05-12 2021-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 5,368 -241 -4.30 484 16.07 0.0007
2021-08-16 2020-12-31 13F/A-1 ARMSTRONG WORLD INDS COM 0074 04247X102 5,609 1,680 42.76 417 53.87 0.0007
2021-02-16 2020-12-31 13F ARMSTRONG WORLD INDS COM 04247X102 5,609 1,680 417 0.0007
2021-08-05 2020-09-30 13F/A-1 ARMSTRONG WORLD INDS COM 04247X102 3,929 3,929 271 0.0392
2020-08-12 2020-06-30 13F ARMSTRONG WORLD INDS COM 04247X102 0 -8 -100.00 0 -100.00
2021-08-05 2020-03-31 13F/A-1 ARMSTRONG WORLD INDS COM 0079 04247X102 8 -4 -33.33 1 0.00 0.0003
2020-05-12 2020-03-31 13F ARMSTRONG WORLD INDS COM 04247X102 3,159 3,147 251 0.0006
2021-08-05 2019-12-31 13F/A-1 ARMSTRONG WORLD INDS INC COM 0093 04247X102 12 -10,797 -99.89 1 -99.90 0.0003
2020-02-11 2019-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 7,559 -3,250 710 0.0011
2019-11-13 2019-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 10,809 -1,500 -12.19 1,045 -12.70 0.0017
2019-08-08 2019-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 12,309 -131,700 -91.45 1,197 -89.53 0.0019
2019-05-15 2019-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 144,009 -164,541 -53.33 11,437 -36.32 0.0190
2019-02-07 2018-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 308,550 -234,482 -43.18 17,960 -52.48 0.0315
2018-11-07 2018-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 543,032 523,350 2,659.03 37,795 2,938.18 0.0557
2018-08-13 2018-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 19,682 19,682 1,244 0.0019
2018-05-04 2018-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -26,382 -100.00 0 -100.00
2018-02-13 2017-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 26,382 10,400 65.07 1,597 94.99 0.0022
2017-11-02 2017-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 15,982 -200,300 -92.61 819 -91.77 0.0014
2017-08-07 2017-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 216,282 57,300 36.04 9,949 35.90 0.0148
2017-05-10 2017-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 158,982 9,800 6.57 7,321 17.40 0.0114
2017-02-07 2016-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 149,182 149,182 0.00 6,236 0.0100
2016-08-09 2016-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -8,782 -100.00 0 -100.00
2016-05-09 2016-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 8,782 -46,790 -84.20 425 -83.27 0.0008
2016-02-12 2015-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 55,572 55,572 0.00 2,541 0.0046
2015-11-10 2015-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 0 0 0.0000
2014-11-12 2014-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -4,841 -100.00 0 -100.00
2014-08-13 2014-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 4,841 -213,941 -97.79 278 -97.79 0.0005
2014-02-11 2013-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 218,782 184,800 543.82 12,604 575.09 0.0250
2013-11-07 2013-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 33,982 33,982 1,867 0.0040
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.