AAR Corp.
US ˙ NYSE ˙ US0003611052

SecurityAIR / AAR Corp.
InstitutionQuantbot Technologies LP
Latest Disclosed Ownership24,499 shares
Latest Disclosed Value $ 2,681,661
Quantbot Technologies LP reports 136.04% increase in ownership of AIR / AAR Corp.

On May 13, 2026 - Quantbot Technologies LP filed a 13F-HR form disclosing ownership of 24,499 shares of AAR Corp. (US:AIR) valued at $2,681,661 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 10,379 shares of AAR Corp.. This represents a change in shares of 136.04% during the quarter. The current value of the position is $2,728,209 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)
2026-05-13 2026-03-31 13F AAR COM 000361105 24,499 14,120 136.04 2,682 212.11 0.1097
2026-02-10 2025-12-31 13F AAR COM 000361105 10,379 -10,536 -50.38 859 -54.19 0.0286
2025-11-12 2025-09-30 13F AAR COM 000361105 20,915 -10,788 -34.03 1,875 -13.99 0.0510
2025-08-13 2025-06-30 13F AAR COM 000361105 31,703 31,703 2,181 0.0559
2024-11-13 2024-09-30 13F AAR COM 000361105 0 -5,885 -100.00 0 -100.00
2024-08-09 2024-06-30 13F AAR COM 000361105 5,885 5,885 428 0.0207
2023-11-07 2023-09-30 13F AAR COM 000361105 0 -1,267 -100.00 0 -100.00
2023-08-08 2023-06-30 13F AAR COM 000361105 1,267 1,267 73 0.0048
2023-02-13 2022-12-31 13F AAR COM 000361105 0 -2,058 -100.00 0 -100.00
2022-11-07 2022-09-30 13F AAR COM 000361105 2,058 -2,381 -53.64 73 -60.54 0.0055
2022-08-09 2022-06-30 13F AAR COM 000361105 4,439 3,902 726.63 185 611.54 0.0170
2022-05-16 2022-03-31 13F AAR COM 000361105 537 537 26 0.0023
2022-02-11 2021-12-31 13F AAR COM 000361105 0 -15 -100.00 0 0.0000
2021-11-09 2021-09-30 13F AAR COM 000361105 15 -16,476 -99.91 0 -100.00
2021-08-12 2021-06-30 13F AAR COM 000361105 16,491 16,491 639 0.0503
2021-02-12 2020-12-31 13F AAR COM 000361105 0 -3,967 -100.00 0 -100.00
2020-11-16 2020-09-30 13F AAR COM 000361105 3,967 3,967 74 0.0085
2019-08-13 2019-06-30 13F AAR COM 000361105 0 -17,600 -100.00 0 -100.00
2019-05-13 2019-03-31 13F AAR COM 000361105 17,600 9,200 109.52 572 82.75 0.0544
2019-02-13 2018-12-31 13F AAR COM 000361105 8,400 -3,339 -28.44 313 -44.31 0.0306
2018-11-13 2018-09-30 13F AAR COM 000361105 11,739 11,739 39.75 562 79.55 0.0393
2017-11-07 2017-09-30 13F AAR COM 000361105 0 -2,300 -100.00 0 -100.00
2017-08-11 2017-06-30 13F AAR COM 000361105 2,300 200 9.52 79 12.86 0.0074
2017-05-10 2017-03-31 13F AAR COM 000361105 2,100 -7,279 -77.61 70 -77.35 0.0073
2017-02-09 2016-12-31 13F AAR COM 000361105 9,379 9,379 346.62 309 341.43 0.0342
2016-04-28 2016-03-31 13F AAR COM 000361105 0 0 0 0.0000
2016-01-22 2015-12-31 13F AAR COM 000361105 0 -12,045 -100.00 0 -100.00
2015-10-22 2015-09-30 13F AAR COM 000361105 12,045 10,149 535.28 228 280.00 0.0398
2015-07-27 2015-06-30 13F AAR COM 000361105 1,896 -6,033 -76.09 60 -75.31 0.0108
2015-04-24 2015-03-31 13F AAR COM 000361105 7,929 7,929 318.20 243 305.00 0.0602
2014-07-08 2014-06-30 13F AAR COM 000361105 0 -600 -100.00 0 -100.00
2014-05-21 2014-03-31 13F AAR COM 000361105 600 -8,577 -93.46 15 -94.16 0.0035
2014-01-31 2013-12-31 13F AAR COM 000361105 9,177 7,477 439.82 257 458.70 0.1257
2013-10-28 2013-09-30 13F AAR COM 000361105 1,700 1,700 46 0.0285
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.