ABM Industries Incorporated
US ˙ NYSE ˙ US0009571003

SecurityABM / ABM Industries Incorporated
InstitutionBlair William & Co/il
Latest Disclosed Ownership9,315 shares
Latest Disclosed Value $ 358,830
Blair William & Co/il reports 12.68% increase in ownership of ABM / ABM Industries Incorporated

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 9,315 shares of ABM Industries Incorporated (US:ABM) valued at $358,814 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 8,267 shares of ABM Industries Incorporated. This represents a change in shares of 12.68% during the quarter. The current value of the position is $396,260 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)
2026-05-08 2026-03-31 13F ABM INDS COM 000957100 9,315 1,048 12.68 359 2.58 0.0010
2026-02-17 2025-12-31 13F ABM INDS COM 000957100 8,267 136 1.67 350 -6.68 0.0009
2025-11-12 2025-09-30 13F ABM INDS COM 000957100 8,131 1 0.01 375 -2.35 0.0010
2025-07-24 2025-06-30 13F ABM INDS COM 000957100 8,130 1 0.01 384 -0.52 0.0011
2025-05-09 2025-03-31 13F ABM INDS COM 000957100 8,129 0 0.00 385 -7.45 0.0012
2025-02-12 2024-12-31 13F ABM INDS COM 000957100 8,129 1 0.01 416 -2.80 0.0012
2024-11-12 2024-09-30 13F ABM INDS COM 000957100 8,128 0 0.00 429 4.14 0.0013
2024-08-12 2024-06-30 13F ABM INDS COM 000957100 8,128 1 0.01 411 13.54 0.0013
2024-05-09 2024-03-31 13F ABM INDS COM 000957100 8,127 1 0.01 363 -0.55 0.0011
2024-02-12 2023-12-31 13F ABM INDS COM 000957100 8,126 0 0.00 364 12.00 0.0012
2023-11-09 2023-09-30 13F ABM INDS COM 000957100 8,126 -1,853 -18.57 325 -23.53 0.0012
2023-08-11 2023-06-30 13F ABM INDS COM 000957100 9,979 126 1.28 426 -3.85 0.0016
2023-05-12 2023-03-31 13F ABM INDS COM 000957100 9,853 1,853 23.16 443 24.51 0.0018
2023-02-10 2022-12-31 13F ABM INDS COM 000957100 8,000 0 0.00 355 16.01 0.0015
2022-11-09 2022-09-30 13F ABM INDS COM 000957100 8,000 0 0.00 306 -11.82 0.0014
2022-08-10 2022-06-30 13F ABM INDS COM 000957100 8,000 -53 -0.66 347 -6.47 0.0015
2022-05-13 2022-03-31 13F ABM INDS COM 000957100 8,053 53 0.66 371 13.46 0.0013
2022-02-14 2021-12-31 13F ABM INDS COM 000957100 8,000 0 0.00 327 -9.17 0.0010
2021-11-12 2021-09-30 13F ABM INDS COM 000957100 8,000 8,000 360 0.0012
2021-08-12 2021-06-30 13F ABM INDS COM 000957100 0 -8,586 -100.00 0 -100.00
2021-05-13 2021-03-31 13F ABM INDS COM 000957100 8,586 -18 -0.21 438 34.36 0.0017
2021-02-09 2020-12-31 13F ABM INDS COM 000957100 8,604 59 0.69 326 4.15 0.0012
2020-11-06 2020-09-30 13F ABM INDS COM 000957100 8,545 61 0.72 313 1.62 0.0013
2020-08-12 2020-06-30 13F ABM INDS COM 000957100 8,484 -21,241 -71.46 308 -57.46 0.0015
2020-05-11 2020-03-31 13F ABM INDS COM 000957100 29,725 20,355 217.24 724 105.10 0.0045
2020-02-13 2019-12-31 13F ABM INDS COM 000957100 9,370 3,060 48.49 353 54.15 0.0018
2019-11-12 2019-09-30 13F ABM INDS COM 000957100 6,310 -2,230 -26.11 229 -33.04 0.0013
2019-08-13 2019-06-30 13F ABM INDS COM 000957100 8,540 40 0.47 342 10.68 0.0020
2019-05-14 2019-03-31 13F ABM INDS COM 000957100 8,500 -73 -0.85 309 12.36 0.0019
2019-02-14 2018-12-31 13F ABM INDS COM 000957100 8,573 -2,889 -25.21 275 -25.68 0.0020
2018-11-13 2018-09-30 13F ABM INDS COM 000957100 11,462 769 7.19 370 18.59 0.0023
2018-08-13 2018-06-30 13F ABM INDS COM 000957100 10,693 107 1.01 312 -11.86 0.0021
2018-05-15 2018-03-31 13F ABM INDS COM 000957100 10,586 0 0.00 354 -11.28 0.0025
2018-02-14 2017-12-31 13F ABM INDS COM 000957100 10,586 0 0.00 399 -9.73 0.0027
2017-11-13 2017-09-30 13F ABM INDUSTRIES COM 000957100 10,586 0 0.00 442 0.45 0.0033
2017-08-04 2017-06-30 13F ABM INDUSTRIES COM 000957100 10,586 -31 -0.29 440 1.38 0.0033
2017-05-10 2017-03-31 13F ABM INDUSTRIES COM 000957100 10,617 10,617 434 0.0035
2017-02-14 2016-12-31 13F ABM INDUSTRIES COM 000957100 0 -10,617 -100.00 0 -100.00
2016-11-14 2016-09-30 13F ABM INDUSTRIES COM 000957100 10,617 0 0.00 421 8.79 0.0037
2016-08-08 2016-06-30 13F ABM INDUSTRIES COM 000957100 10,617 -3,400 -24.26 387 -14.38 0.0036
2016-05-16 2016-03-31 13F ABM INDUSTRIES COM 000957100 14,017 0 0.00 452 13.57 0.0043
2016-02-16 2015-12-31 13F ABM INDUSTRIES COM 000957100 14,017 -42,701 -75.29 398 -74.29 0.0037
2015-11-12 2015-09-30 13F ABM INDUSTRIES COM 000957100 56,718 -1,940,933 -97.16 1,548 -97.64 0.0134
2015-08-03 2015-06-30 13F ABM INDUSTRIES COM 000957100 1,997,651 11,366 0.57 65,662 3.76 0.0982
2015-05-11 2015-03-31 13F ABM INDUSTRIES COM 000957100 1,986,285 1,986,285 0.00 63,282 0.0974
2015-02-05 2014-12-31 13F ABM INDUSTRIES COM 000957100 0 -1,799,946 -100.00 0 -100.00
2014-11-04 2014-09-30 13F ABM INDUSTRIES COM 000957100 1,799,946 -186,225 -9.38 46,240 -13.71 0.0791
2014-08-01 2014-06-30 13F ABM INDUSTRIES COM 000957100 1,986,171 192,264 10.72 53,587 3.94 0.0875
2014-05-06 2014-03-31 13F ABM INDUSTRIES COM 000957100 1,793,907 1,769,450 7,234.94 51,557 7,275.82 0.0853
2014-02-11 2013-12-31 13F ABM INDUSTRIES COM 000957100 24,457 -6,906 -22.02 699 -16.19 0.0012
2013-11-12 2013-09-30 13F ABM INDUSTRIES COM 000957100 31,363 876 2.87 834 11.80 0.0015
2013-08-07 2013-06-30 13F ABM INDUSTRIES COM 000957100 30,487 30,487 746 0.0015
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.