Maximus, Inc.
MX ˙ BMV ˙ US5779331041
SecurityMX:MMS / Maximus, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership669,053 shares
Latest Disclosed Value $ 42,719,884
Boston Partners reports 24.02% decrease in ownership of MMS / Maximus, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 669,053 shares of Maximus, Inc. (MX:MMS) valued at $42,719,884 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 880,539 shares of Maximus, Inc.. This represents a change in shares of -24.02% during the quarter.

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 MAXIMUS COM 577933104 669,053 -211,486 -24.02 42,720 -44.34 0.0191
2026-02-13 2025-12-31 13F MAXIMUS COM 577933104 880,539 -85,600 -8.86 76,752 -13.01 0.0795
2025-11-13 2025-09-30 13F MAXIMUS COM 577933104 966,139 308,892 47.00 88,236 90.02 0.0906
2025-08-12 2025-06-30 13F/A-1 MAXIMUS COM 577933104 657,247 349,529 113.59 46,435 121.31 0.0516
2025-08-07 2025-06-30 13F MAXIMUS COM 577933104 555,500 247,782 39,293 0.0180
2025-05-13 2025-03-31 13F MAXIMUS COM 577933104 307,718 307,718 20,983 0.0254
2023-11-08 2023-09-30 13F MAXIMUS COM 577933104 0 -141,738 -100.00 0 -100.00
2023-08-10 2023-06-30 13F MAXIMUS COM 577933104 141,738 -5,081 -3.46 11,825 0.52 0.0159
2023-05-09 2023-03-31 13F MAXIMUS COM 577933104 146,819 13,336 9.99 11,763 19.31 0.0162
2023-02-08 2022-12-31 13F MAXIMUS COM 577933104 133,483 -2,113 -1.56 9,859 24.70 0.0133
2022-11-09 2022-09-30 13F MAXIMUS COM 577933104 135,596 -1,794 -1.31 7,906 -9.30 0.0116
2022-08-10 2022-06-30 13F MAXIMUS COM 577933104 137,390 3,301 2.46 8,717 -13.14 0.0122
2022-05-10 2022-03-31 13F MAXIMUS COM 577933104 134,089 3,980 3.06 10,036 -2.87 0.0122
2022-02-04 2021-12-31 13F MAXIMUS COM 577933104 130,109 -898 -0.69 10,333 -5.55 0.0124
2021-11-05 2021-09-30 13F MAXIMUS COM 577933104 131,007 -204,622 -60.97 10,940 -62.95 0.0139
2021-08-12 2021-06-30 13F MAXIMUS COM 577933104 335,629 -5,667 -1.66 29,524 -3.53 0.0377
2021-05-10 2021-03-31 13F MAXIMUS COM 577933104 341,296 -4,039 -1.17 30,604 21.08 0.0410
2021-02-10 2020-12-31 13F/A-1 MAXIMUS COM 577933104 345,335 -23,308 -6.32 25,276 0.23 0.0393
2021-02-04 2020-12-31 13F MAXIMUS COM 577933104 345,335 -23,308 25,276 15,164.0976
2020-11-13 2020-09-30 13F/A-1 MAXIMUS COM 577933104 368,643 -21,007 -5.39 25,219 -8.09 0.0459
2020-11-09 2020-09-30 13F MAXIMUS COM 577933104 389,650 0 27,440 20,144.2287
2020-08-12 2020-06-30 13F MAXIMUS COM 577933104 389,650 -6,422 -1.62 27,440 19.50 0.0504
2020-05-13 2020-03-31 13F MAXIMUS COM 577933104 396,072 23,355 6.27 22,962 -17.25 0.0456
2020-02-06 2019-12-31 13F/A-1 MAXIMUS COM 577933104 372,717 198 0.05 27,750 -3.41 0.0367
2020-02-05 2019-12-31 13F MAXIMUS COM 577933104 372,717 198 27,750 15,601.8605
2019-11-20 2019-09-30 13F/A-1 MAXIMUS COM 577933104 372,519 -8,046 -2.11 28,730 3.82 0.0389
2019-11-08 2019-09-30 13F MAXIMUS COM 577933104 381,245 680 27,797 0.0368
2019-08-26 2019-06-30 13F/A-1 MAXIMUS COM 577933104 380,565 -10,801 -2.76 27,674 -0.38 0.0363
2019-08-09 2019-06-30 13F MAXIMUS COM 577933104 380,565 -10,801 27,674
2019-05-13 2019-03-31 13F/A-1 MAXIMUS COM 577933104 391,366 9,603 2.52 27,779 11.79 0.0368
2019-05-03 2019-03-31 13F MAXIMUS COM 577933104 391,366 9,603 27,779
2019-02-07 2018-12-31 13F MAXIMUS COM 577933104 381,763 25,896 7.28 24,849 7.33 0.0357
2018-11-14 2018-09-30 13F MAXIMUS COM 577933104 355,867 -1,623 -0.45 23,153 4.27 0.0269
2018-08-03 2018-06-30 13F MAXIMUS COM 577933104 357,490 -1,996 -0.56 22,204 -7.45 0.0266
2018-05-04 2018-03-31 13F MAXIMUS COM 577933104 359,486 -141,354 -28.22 23,992 -33.08 0.0289
2018-02-14 2017-12-31 13F/A-1 MAXIMUS COM 577933104 500,840 26,638 5.62 35,850 17.21 0.0422
2018-02-01 2017-12-31 13F MAXIMUS COM 577933104 500,840 26,638 35,850
2017-11-02 2017-09-30 13F MAXIMUS COM 577933104 474,202 17,026 3.72 30,586 6.82 0.0378
2017-08-02 2017-06-30 13F MAXIMUS COM 577933104 457,176 15,164 3.43 28,633 4.15 0.0364
2017-05-03 2017-03-31 13F MAXIMUS COM 577933104 442,012 -4,412 -0.99 27,493 10.39 0.0351
2017-02-06 2016-12-31 13F MAXIMUS COM 577933104 446,424 1,829 0.41 24,906 -0.96 0.0327
2016-11-09 2016-09-30 13F MAXIMUS COM 577933104 444,595 20,011 4.71 25,147 6.97 0.0352
2016-08-05 2016-06-30 13F MAXIMUS COM 577933104 424,584 -12,399 -2.84 23,509 2.20 0.0340
2016-05-12 2016-03-31 13F MAXIMUS COM 577933104 436,983 833 0.19 23,003 -6.24 0.0339
2016-02-08 2015-12-31 13F MAXIMUS COM 577933104 436,150 23,375 5.66 24,533 -0.21 0.0351
2015-11-10 2015-09-30 13F MAXIMUS COM 577933104 412,775 7,603 1.88 24,585 -7.69 0.0375
2015-08-10 2015-06-30 13F MAXIMUS COM 577933104 405,172 45,393 12.62 26,632 10.88 0.0383
2015-05-05 2015-03-31 13F MAXIMUS COM 577933104 359,779 -17,340 -4.60 24,019 16.14 0.0358
2015-02-09 2014-12-31 13F MAXIMUS COM 577933104 377,119 -13,125 -3.36 20,681 32.06 0.0310
2014-11-12 2014-09-30 13F MAXIMUS COM 577933104 390,244 -145,265 -27.13 15,660 -32.02 0.0254
2014-08-08 2014-06-30 13F MAXIMUS COM 577933104 535,509 -791 -0.15 23,037 -4.24 0.0386
2014-05-07 2014-03-31 13F MAXIMUS COM 577933104 536,300 -4,036 -0.75 24,058 1.21 0.0439
2014-02-06 2013-12-31 13F MAXIMUS COM 577933104 540,336 -180,564 -25.05 23,770 -26.79 0.0487
2013-11-12 2013-09-30 13F MAXIMUS COM 577933104 720,900 353,859 96.41 32,469 18.77 0.0783
2013-08-01 2013-06-30 13F MAXIMUS COM 577933104 367,041 367,041 27,337 0.0753
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.