AAR Corp.
DE ˙ DB ˙ US0003611052
98,45 € ↑3,45 (3,63%)
2026-06-05
DEL PRIS
SecurityDE:ARZ / AAR Corp.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,944,689 shares
Ownership 4.90%
Dimensional Fund Advisors Lp ownership in ARZ / AAR Corp.

2026-04-09 - Dimensional Fund Advisors Lp has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,944,689 shares of AAR Corp. (DE:ARZ). This represents 4.9 percent ownership of the company. In their previous filing dated 2026-01-21 , Dimensional Fund Advisors Lp had reported owning 1,980,717 shares, indicating a decrease of -1.82 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-04-09 2026-04-09 13G/A 1,980,717 1,944,689 -1.82 4.90 -2.00
2026-01-21 2026-01-21 13G/A 2,315,657 1,980,717 -14.46 5.00 -21.88
2025-04-15 2025-04-15 13G/A 2,817,228 2,315,657 -17.80 6.40 -18.99
2024-02-09 2024-02-09 13G/A 2,843,229 2,817,228 -0.91 7.90 -4.82
2023-02-10 2023-02-10 13G/A 2,503,558 2,843,229 13.57 8.30 16.90
2022-02-08 2022-02-08 13G/A 2,660,448 2,503,558 -5.90 7.10 -5.33
2021-02-12 2021-02-12 13G/A 2,927,516 2,660,448 -9.12 7.50 -10.61
2020-02-12 2020-02-12 13G/A 2,955,585 2,927,516 -0.95 8.39 -0.36
2019-02-08 2019-02-08 13G/A 2,923,664 2,955,585 1.09 8.42 0.00
2018-02-09 2018-02-09 13G/A 2,938,594 2,923,664 -0.51 8.42 -1.64
2017-02-09 2017-02-09 13G/A 3,297,199 2,938,594 -10.88 8.56 -9.03
2016-02-09 2016-02-09 13G/A 3,297,199 9.41
2015-02-05 2015-02-05 13G/A 3,373,719 8.48
2014-02-10 2014-02-10 13G/A 3,361,841 8.49
2013-02-11 2013-02-11 13G/A 2,987,496 7.53
2012-02-14 2012-02-14 13G/A 2,983,352 7.41

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-07 2026-03-31 13F AAR COM 000361105 1,944,689 -36,028 -1.82 212,848 29.80 0.0095
2026-02-12 2025-12-31 13F AAR COM 000361105 1,980,717 -25,563 -1.27 163,985 -8.85 0.0344
2025-11-12 2025-09-30 13F AAR COM 000361105 2,006,280 -181,020 -8.28 179,897 19.56 0.0386
2025-08-12 2025-06-30 13F AAR COM 000361105 2,187,300 -128,357 -5.54 150,466 16.05 0.0348
2025-05-13 2025-03-31 13F AAR COM 000361105 2,315,657 -218,495 -8.62 129,655 -16.51 0.0322
2025-02-13 2024-12-31 13F AAR COM 000361105 2,534,152 -150,878 -5.62 155,293 -11.51 0.0373
2024-11-07 2024-09-30 13F AAR COM 000361105 2,685,030 -100,760 -3.62 175,492 -13.35 0.0426
2024-08-09 2024-06-30 13F AAR COM 000361105 2,785,790 2,550 0.09 202,526 21.54 0.0529
2024-05-10 2024-03-31 13F AAR COM 000361105 2,783,240 -33,883 -1.20 166,633 -5.21 0.0451
2024-02-07 2023-12-31 13F AAR COM 000361105 2,817,123 -4,539 -0.16 175,789 4.65 0.0513
2023-11-09 2023-09-30 13F AAR COM 000361105 2,821,662 -4,330 -0.15 167,974 2.91 0.0551
2023-08-09 2023-06-30 13F AAR COM 000361105 2,825,992 -32,352 -1.13 163,230 4.69 0.0520
2023-05-12 2023-03-31 13F AAR COM 000361105 2,858,344 15,115 0.53 155,923 122,673.23 0.0525
2023-02-09 2022-12-31 13F AAR COM 000361105 2,843,229 99,184 3.61 128 -99.87 0.0377
2022-11-10 2022-09-30 13F AAR COM 000361105 2,744,045 36,061 1.33 98,292 -13.25 0.0377
2022-08-12 2022-06-30 13F AAR COM 000361105 2,707,984 124,313 4.81 113,301 -9.45 0.0406
2022-05-13 2022-03-31 13F AAR COM 000361105 2,583,671 80,119 3.20 125,127 28.06 0.0385
2022-02-09 2021-12-31 13F AAR COM 000361105 2,503,552 -79,252 -3.07 97,713 16.66 0.0295
2021-11-12 2021-09-30 13F AAR COM 000361105 2,582,804 -61,395 -2.32 83,761 -18.25 0.0270
2021-08-12 2021-06-30 13F AAR COM 000361105 2,644,199 53,377 2.06 102,462 -5.05 0.0324
2021-05-14 2021-03-31 13F AAR COM 000361105 2,590,822 -69,626 -2.62 107,908 11.98 0.0357
2021-03-08 2020-12-31 13F/A-2 AAR COM 000361105 2,660,448 -114,055 -4.11 96,362 84.74 0.0348
2021-02-11 2020-12-31 13F AAR COM 000361105 2,660,448 -114,055 96,362 34,800.8325
2020-11-12 2020-09-30 13F AAR COM 000361105 2,774,503 -91,932 -3.21 52,161 -11.96 0.0221
2020-08-13 2020-06-30 13F AAR COM 000361105 2,866,435 -65,296 -2.23 59,249 13.79 0.0260
2020-05-14 2020-03-31 13F AAR COM 000361105 2,931,731 4,215 0.14 52,068 -60.56 0.0271
2020-02-14 2019-12-31 13F AAR COM 000361105 2,927,516 -18,391 -0.62 132,031 8.76 0.0481
2019-11-12 2019-09-30 13F AAR COM 000361105 2,945,907 -867 -0.03 121,401 11.98 0.0472
2019-08-13 2019-06-30 13F AAR COM 000361105 2,946,774 -1,638 -0.06 108,411 13.10 0.0421
2019-08-12 2019-03-31 13F/A-2 AAR COM 000361105 2,948,412 -7,173 -0.24 95,853 -13.15 0.0382
2019-05-10 2019-03-31 13F AAR COM 000361105 2,948,412 -7,173 95,853
2019-02-26 2018-12-31 13F/A-1 AAR COM 000361105 2,955,585 3,298 0.11 110,361 -21.94 0.0500
2019-02-13 2018-12-31 13F AAR COM 000361105 2,955,585 3,298 110,361
2018-11-13 2018-09-30 13F AAR COM 000361105 2,952,287 41,766 1.44 141,384 4.49 0.0538
2018-08-10 2018-06-30 13F AAR COM 000361105 2,910,521 -25,079 -0.85 135,310 4.50 0.0539
2018-05-11 2018-03-31 13F AAR COM 000361105 2,935,600 11,936 0.41 129,489 12.73 0.0540
2018-02-12 2017-12-31 13F AAR COM 000361105 2,923,664 14,890 0.51 114,871 4.53 0.0476
2017-11-13 2017-09-30 13F AAR COM 000361105 2,908,774 -11,111 -0.38 109,893 8.27 0.0480
2017-08-11 2017-06-30 13F AAR COM 000361105 2,919,885 -12,922 -0.44 101,495 2.90 0.0469
2017-05-12 2017-03-31 13F AAR COM 000361105 2,932,807 -5,787 -0.20 98,630 1.55 0.0471
2017-02-09 2016-12-31 13F AAR COM 000361105 2,938,594 -7,966 -0.27 97,122 5.24 0.0485
2016-11-10 2016-09-30 13F AAR COM 000361105 2,946,560 -68,877 -2.28 92,283 31.12 0.0499
2016-08-09 2016-06-30 13F AAR COM 000361105 3,015,437 -211,386 -6.55 70,378 -6.27 0.0405
2016-05-13 2016-03-31 13F AAR COM 000361105 3,226,823 -70,376 -2.13 75,088 -13.38 0.0449
2016-02-10 2015-12-31 13F AAR COM 000361105 3,297,199 -65,495 -1.95 86,683 35.89 0.0540
2015-11-13 2015-09-30 13F AAR COM 000361105 3,362,694 -13,676 -0.41 63,790 -40.72 0.0419
2015-08-14 2015-06-30 13F AAR COM 000361105 3,376,370 -3,002 -0.09 107,605 3.72 0.0659
2015-05-14 2015-03-31 13F AAR COM 000361105 3,379,372 5,653 0.17 103,748 10.70 0.0655
2015-02-06 2014-12-31 13F AAR COM 000361105 3,373,719 11,892 0.35 93,723 15.44 0.0616
2014-11-13 2014-09-30 13F AAR COM 000361105 3,361,827 2,517 0.07 81,190 -12.31 0.0575
2014-08-08 2014-06-30 13F AAR COM 000361105 3,359,310 35,783 1.08 92,583 7.35 0.0644
2014-05-14 2014-03-31 13F AAR COM 000361105 3,323,527 -38,314 -1.14 86,245 -8.41 0.0644
2014-02-12 2013-12-31 13F AAR COM 000361105 3,361,841 33,554 1.01 94,166 3.52 0.0734
2013-11-13 2013-09-30 13F AAR COM 000361105 3,328,287 45,338 1.38 90,963 26.06 0.0787
2013-08-15 2013-06-30 13F AAR COM 000361105 3,282,949 3,282,949 72,159 0.0680
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.