A. O. Smith Corporation
US ˙ NYSE ˙ US8318652091

SecurityAOS / A. O. Smith Corporation
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership1,050,930 shares
Latest Disclosed Value $ 69,298,355
Boston Trust Walden Corp reports 2.40% decrease in ownership of AOS / A. O. Smith Corporation

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 1,050,930 shares of A. O. Smith Corporation (US:AOS) valued at $69,298,324 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 1,076,784 shares of A. O. Smith Corporation. This represents a change in shares of -2.40% during the quarter. The current value of the position is $59,619,259 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)
2026-04-24 2026-03-31 13F SMITH COMMON STOCK 831865209 1,050,930 -25,854 -2.40 69,298 -3.77 0.3407
2026-01-28 2025-12-31 13F SMITH COMMON STOCK 831865209 1,076,784 130,159 13.75 72,015 3.63 0.5435
2025-10-17 2025-09-30 13F SMITH COMMON STOCK 831865209 946,625 123,851 15.05 69,492 28.81 0.5098
2025-07-28 2025-06-30 13F SMITH COMMON STOCK 831865209 822,774 35,256 4.48 53,949 4.81 0.3848
2025-04-21 2025-03-31 13F SMITH COMMON STOCK 831865209 787,518 10,264 1.32 51,472 -2.91 0.3761
2025-01-24 2024-12-31 13F SMITH COMMON STOCK 831865209 777,254 21,503 2.85 53,016 -21.91 0.3720
2024-10-24 2024-09-30 13F SMITH COMMON STOCK 831865209 755,751 948 0.13 67,889 9.98 0.4723
2024-07-19 2024-06-30 13F SMITH COMMON STOCK 831865209 754,803 29,094 4.01 61,728 -4.92 0.4578
2024-04-22 2024-03-31 13F SMITH COMMON STOCK 831865209 725,709 11,018 1.54 64,922 10.19 0.4631
2024-01-24 2023-12-31 13F SMITH COMMON STOCK 831865209 714,691 17,148 2.46 58,919 27.73 0.4445
2023-10-18 2023-09-30 13F SMITH COMMON STOCK 831865209 697,543 1,959 0.28 46,129 -8.88 0.3866
2023-07-24 2023-06-30 13F SMITH COMMON STOCK 831865209 695,584 36,815 5.59 50,625 11.13 0.4152
2023-04-19 2023-03-31 13F SMITH COMMON STOCK 831865209 658,769 -3,904 -0.59 45,554 20.09 0.3932
2023-01-20 2022-12-31 13F SMITH COMMON STOCK 831865209 662,673 36,509 5.83 37,931 24.70 0.3335
2022-10-19 2022-09-30 13F SMITH COMMON STOCK 831865209 626,164 22,650 3.75 30,419 -7.82 0.3013
2022-07-22 2022-06-30 13F SMITH COMMON STOCK 831865209 603,514 25,386 4.39 33,000 -10.66 0.3118
2022-04-20 2022-03-31 13F SMITH COMMON STOCK 831865209 578,128 55,468 10.61 36,937 -17.68 0.3051
2022-01-21 2021-12-31 13F SMITH COMMON STOCK 831865209 522,660 30,357 6.17 44,871 49.25 0.3603
2021-10-25 2021-09-30 13F SMITH COMMON STOCK 831865209 492,303 -3,927 -0.79 30,065 -15.92 0.2662
2021-07-22 2021-06-30 13F SMITH COMMON STOCK 831865209 496,230 11,526 2.38 35,758 9.11 0.3179
2021-04-21 2021-03-31 13F SMITH COMMON STOCK 831865209 484,704 57,942 13.58 32,771 40.08 0.3173
2021-01-15 2020-12-31 13F SMITH COMMON STOCK 831865209 426,762 481 0.11 23,395 3.95 0.2496
2020-10-14 2020-09-30 13F SMITH COMMON STOCK 831865209 426,281 3,859 0.91 22,507 13.08 0.2803
2020-07-23 2020-06-30 13F SMITH COMMON STOCK 831865209 422,422 15,601 3.83 19,904 29.40 0.2688
2020-04-24 2020-03-31 13F/A-1 SMITH COMMON STOCK 831865209 406,821 83,246 25.73 15,382 -0.22 0.2451
2020-04-21 2020-03-31 13F SMITH COMMON STOCK 831865209 437,503 113,928 16,542 146,682.9281
2020-01-10 2019-12-31 13F SMITH COMMON STOCK 831865209 323,575 31,068 10.62 15,416 10.46 0.1794
2019-10-21 2019-09-30 13F SMITH COMMON STOCK 831865209 292,507 292,507 13,956 0.1754
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.