Armstrong World Industries, Inc.
US ˙ NYSE ˙ US04247X1028

SecurityAWI / Armstrong World Industries, Inc.
InstitutionCreative Planning
Latest Disclosed Ownership31,431 shares
Latest Disclosed Value $ 5,179,760
Creative Planning reports 23.34% increase in ownership of AWI / Armstrong World Industries, Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 31,431 shares of Armstrong World Industries, Inc. (US:AWI) valued at $5,179,829 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 25,484 shares of Armstrong World Industries, Inc.. This represents a change in shares of 23.34% during the quarter. The current value of the position is $4,815,544 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)
2026-05-12 2026-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 31,431 5,947 23.34 5,180 6.37 0.0035
2026-02-17 2025-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 25,484 -880 -3.34 4,870 -5.77 0.0035
2025-11-14 2025-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 26,364 8,439 47.08 5,168 77.50 0.0039
2025-08-08 2025-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 17,925 349 1.99 2,912 17.57 0.0025
2025-05-15 2025-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 17,576 1,071 6.49 2,476 6.17 0.0023
2025-02-14 2024-12-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 16,505 14,426 693.89 2,333 754.21 0.0023
2024-10-11 2024-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 2,079 141 7.28 273 24.66 0.0003
2024-08-15 2024-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 1,938 -70 -3.49 219 -12.05 0.0002
2024-05-13 2024-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 2,008 2,008 249 0.0003
2017-10-17 2017-09-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 0 -267 -100.00 0 -100.00
2017-07-12 2017-06-30 13F ARMSTRONG WORLD INDS INC COM 04247X102 267 0 0.00 12 0.00 0.0001
2017-04-07 2017-03-31 13F ARMSTRONG WORLD INDS INC COM 04247X102 267 267 12 0.0001
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.