ABM Industries Incorporated
US ˙ NYSE ˙ US0009571003

SecurityABM / ABM Industries Incorporated
InstitutionBoston Partners
Latest Disclosed Ownership770,325 shares
Latest Disclosed Value $ 29,696,081
Boston Partners reports 2.53% decrease in ownership of ABM / ABM Industries Incorporated

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 770,325 shares of ABM Industries Incorporated (US:ABM) valued at $29,672,919 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 790,292 shares of ABM Industries Incorporated. This represents a change in shares of -2.53% during the quarter. The current value of the position is $30,189,037 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)
2026-05-11 2026-03-31 13F ABM INDS COM 000957100 770,325 -19,967 -2.53 29,696 -11.69 0.0133
2026-02-13 2025-12-31 13F ABM INDS COM 000957100 790,292 -71,256 -8.27 33,629 -15.28 0.0348
2025-11-13 2025-09-30 13F ABM INDS COM 000957100 861,548 -7,710 -0.89 39,693 -3.22 0.0408
2025-08-12 2025-06-30 13F/A-1 ABM INDS COM 000957100 869,258 227,907 35.54 41,012 35.06 0.0455
2025-08-07 2025-06-30 13F ABM INDS COM 000957100 808,479 167,128 38,143 0.0175
2025-05-13 2025-03-31 13F ABM INDS COM 000957100 641,351 612,586 2,129.62 30,367 1,962.91 0.0367
2025-02-11 2024-12-31 13F ABM INDS COM 000957100 28,765 32 0.11 1,472 -2.84 0.0018
2024-11-12 2024-09-30 13F ABM INDS COM 000957100 28,733 -7,281 -20.22 1,516 -16.80 0.0018
2024-08-14 2024-06-30 13F ABM INDS COM 000957100 36,014 11,889 49.28 1,821 69.24 0.0023
2024-05-28 2024-03-31 13F/A-1 ABM INDS COM 000957100 24,125 14,560 152.22 1,076 151.40 0.0013
2024-05-13 2024-03-31 13F ABM INDS COM 000957100 24,125 14,560 1,076 0.0005
2024-02-07 2023-12-31 13F ABM INDS COM 000957100 9,565 -740,583 -98.72 429 -98.57 0.0006
2023-11-08 2023-09-30 13F ABM INDS COM 000957100 750,148 -298,480 -28.46 29,940 -33.80 0.0415
2023-08-10 2023-06-30 13F ABM INDS COM 000957100 1,048,628 -793,526 -43.08 45,226 -44.83 0.0609
2023-05-09 2023-03-31 13F ABM INDS COM 000957100 1,842,154 20,696 1.14 81,981 0.08 0.1127
2023-02-08 2022-12-31 13F ABM INDS COM 000957100 1,821,458 -6,417 -0.35 81,914 13.49 0.1108
2022-11-09 2022-09-30 13F ABM INDS COM 000957100 1,827,875 -36,360 -1.95 72,179 -11.51 0.1056
2022-08-10 2022-06-30 13F ABM INDS COM 000957100 1,864,235 251,987 15.63 81,572 9.27 0.1140
2022-05-10 2022-03-31 13F ABM INDS COM 000957100 1,612,248 12,258 0.77 74,650 13.56 0.0904
2022-02-04 2021-12-31 13F ABM INDS COM 000957100 1,599,990 -4,314 -0.27 65,737 -9.34 0.0792
2021-11-05 2021-09-30 13F ABM INDS COM 000957100 1,604,304 -4,432 -0.28 72,507 2.07 0.0919
2021-08-12 2021-06-30 13F ABM INDS COM 000957100 1,608,736 4,608 0.29 71,034 -13.73 0.0906
2021-05-10 2021-03-31 13F ABM INDS COM 000957100 1,604,128 124,046 8.38 82,341 47.02 0.1104
2021-02-10 2020-12-31 13F/A-1 ABM INDS COM 000957100 1,480,082 -87,805 -5.60 56,007 -2.56 0.0871
2021-02-04 2020-12-31 13F ABM INDS COM 000957100 1,480,082 -87,805 56,007 33,600.8710
2020-11-13 2020-09-30 13F/A-1 ABM INDS COM 000957100 1,567,887 -363,361 -18.81 57,479 -17.82 0.1047
2020-11-09 2020-09-30 13F ABM INDS COM 000957100 1,931,248 0 69,944 51,347.2279
2020-08-12 2020-06-30 13F ABM INDS COM 000957100 1,931,248 -39,279 -1.99 69,944 46.17 0.1285
2020-05-13 2020-03-31 13F ABM INDS COM 000957100 1,970,527 307,741 18.51 47,852 -23.64 0.0950
2020-02-06 2019-12-31 13F/A-1 ABM INDS COM 000957100 1,662,786 588,180 54.73 62,669 60.82 0.0829
2019-11-20 2019-09-30 13F/A-1 ABM INDS COM 000957100 1,074,606 -22,172 -2.02 38,968 -11.25 0.0528
2019-11-08 2019-09-30 13F ABM INDS COM 000957100 1,097,607 829 43,422 0.0574
2019-08-26 2019-06-30 13F/A-1 ABM INDS COM 000957100 1,096,778 -30,390 -2.70 43,908 7.17 0.0576
2019-08-09 2019-06-30 13F ABM INDS COM 000957100 1,096,778 -30,390 43,908
2019-05-13 2019-03-31 13F/A-1 ABM INDS COM 000957100 1,127,168 43,563 4.02 40,972 17.75 0.0543
2019-02-07 2018-12-31 13F ABM INDS COM 000957100 1,083,605 406,334 60.00 34,795 59.30 0.0500
2018-11-14 2018-09-30 13F ABM INDS COM 000957100 677,271 -9,053 -1.32 21,842 9.06 0.0254
2018-08-03 2018-06-30 13F ABM INDS COM 000957100 686,324 2,672 0.39 20,027 -12.50 0.0240
2018-05-04 2018-03-31 13F ABM INDS COM 000957100 683,652 -14,942 -2.14 22,889 -13.14 0.0276
2018-02-14 2017-12-31 13F/A-1 ABM INDS COM 000957100 698,594 42,631 6.50 26,351 -3.69 0.0310
2018-02-01 2017-12-31 13F ABM INDS COM 000957100 698,594 42,631 26,351
2017-11-02 2017-09-30 13F ABM INDS COM 000957100 655,963 17,276 2.70 27,360 3.17 0.0338
2017-08-02 2017-06-30 13F ABM INDS COM 000957100 638,687 -154,436 -19.47 26,519 -23.31 0.0337
2017-05-03 2017-03-31 13F ABM INDS COM 000957100 793,123 -7,354 -0.92 34,580 5.78 0.0442
2017-02-06 2016-12-31 13F ABM INDS COM 000957100 800,477 3,717 0.47 32,692 3.35 0.0430
2016-11-09 2016-09-30 13F ABM INDS COM 000957100 796,760 -26,275 -3.19 31,631 5.35 0.0442
2016-08-05 2016-06-30 13F ABM INDS COM 000957100 823,035 -76,216 -8.48 30,025 3.34 0.0434
2016-05-12 2016-03-31 13F ABM INDS COM 000957100 899,251 -1,752 -0.19 29,055 13.27 0.0428
2016-02-08 2015-12-31 13F ABM INDS COM 000957100 901,003 42,118 4.90 25,652 9.36 0.0367
2015-11-10 2015-09-30 13F ABM INDS COM 000957100 858,885 15,948 1.89 23,457 -15.34 0.0358
2015-08-10 2015-06-30 13F ABM INDS COM 000957100 842,937 125,794 17.54 27,707 21.27 0.0398
2015-05-05 2015-03-31 13F ABM INDS COM 000957100 717,143 -24,993 -3.37 22,848 7.46 0.0340
2015-02-09 2014-12-31 13F ABM INDS COM 000957100 742,136 -46,936 -5.95 21,262 4.88 0.0319
2014-11-12 2014-09-30 13F ABM INDS COM 000957100 789,072 410,533 108.45 20,272 98.49 0.0329
2014-08-08 2014-06-30 13F ABM INDS COM 000957100 378,539 -8,290 -2.14 10,213 -8.13 0.0171
2014-05-07 2014-03-31 13F ABM INDS COM 000957100 386,829 1,081 0.28 11,117 0.80 0.0203
2014-02-06 2013-12-31 13F ABM INDS COM 000957100 385,748 -21,428 -5.26 11,029 1.75 0.0226
2013-11-12 2013-09-30 13F ABM INDS COM 000957100 407,176 -142,634 -25.94 10,839 -19.57 0.0261
2013-08-01 2013-06-30 13F ABM INDS COM 000957100 549,810 549,810 13,476 0.0371
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.