AAR Corp.
US ˙ NYSE ˙ US0003611052

SecurityAIR / AAR Corp.
InstitutionSei Investments Co
Latest Disclosed Ownership236,769 shares
Latest Disclosed Value $ 19,602,109
Sei Investments Co reports 10.69% increase in ownership of AIR / AAR Corp.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 236,769 shares of AAR Corp. (US:AIR) valued at $19,602,106 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 213,900 shares of AAR Corp.. This represents a change in shares of 10.69% during the quarter. The current value of the position is $26,366,596 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)
2026-02-13 2025-12-31 13F AAR COM 000361105 236,769 22,869 10.69 19,602 2.20 0.0193
2025-11-13 2025-09-30 13F AAR COM 000361105 213,900 -51,475 -19.40 19,180 5.07 0.0206
2025-08-14 2025-06-30 13F AAR COM 000361105 265,375 31,744 13.59 18,255 39.55 0.0212
2025-05-14 2025-03-31 13F/A-1 AAR COM 000361105 233,631 -21,022 -8.26 13,081 -16.17 0.0168
2025-05-13 2025-03-31 13F AAR COM 000361105 254,650 -3 15,605 0.0170
2025-02-11 2024-12-31 13F AAR COM 000361105 254,653 -40,940 -13.85 15,605 -19.22 0.0200
2024-11-12 2024-09-30 13F AAR COM 000361105 295,593 126,393 74.70 19,320 57.07 0.0251
2024-08-13 2024-06-30 13F AAR COM 000361105 169,200 71,648 73.45 12,301 110.62 0.0174
2024-05-07 2024-03-31 13F AAR COM 000361105 97,552 85,810 730.80 5,840 697.81 0.0086
2024-02-14 2023-12-31 13F AAR COM 000361105 11,742 11,742 733 0.0012
2023-11-14 2023-09-30 13F AAR COM 000361105 0 -4,611 -100.00 0 -100.00
2023-08-11 2023-06-30 13F AAR COM 000361105 4,611 -3,587 -43.75 266 -40.49 0.0005
2023-05-12 2023-03-31 13F AAR COM 000361105 8,198 8,198 447 0.0008
2023-02-10 2022-12-31 13F AAR COM 000361105 0 -12,501 -100.00 0 -100.00
2022-11-14 2022-09-30 13F AAR COM 000361105 12,501 -15,727 -55.71 447 -62.15 0.0010
2022-08-15 2022-06-30 13F AAR COM 000361105 28,228 4,377 18.35 1,181 2.25 0.0026
2022-05-13 2022-03-31 13F AAR COM 000361105 23,851 8,341 53.78 1,155 90.91 0.0023
2022-02-14 2021-12-31 13F AAR COM 000361105 15,510 10 0.06 605 20.28 0.0011
2021-11-12 2021-09-30 13F AAR COM 000361105 15,500 2,000 14.81 503 -3.82 0.0011
2021-08-06 2021-06-30 13F AAR COM 000361105 13,500 1,800 15.38 523 7.39 0.0012
2021-05-12 2021-03-31 13F AAR COM 000361105 11,700 -800 -6.40 487 7.51 0.0012
2021-02-08 2020-12-31 13F AAR COM 000361105 12,500 -11,400 -47.70 453 0.89 0.0012
2020-12-04 2020-09-30 13F/A-1 AAR COM 000361105 23,900 7,800 48.45 449 34.83 0.0013
2020-11-06 2020-09-30 13F AAR COM 000361105 23,900 7,800 449 1,081.0922
2020-08-17 2020-06-30 13F/A-1 AAR COM 000361105 16,100 -9,439 -36.96 333 -26.65 0.0010
2020-08-11 2020-06-30 13F AAR COM 000361105 29,106 3,567 1,313 3,561.5824
2020-05-14 2020-03-31 13F AAR COM 000361105 25,539 -3,567 -12.26 454 -65.42 0.0017
2020-02-06 2019-12-31 13F AAR COM 000361105 29,106 -1,026 -3.41 1,313 5.72 0.0039
2019-11-12 2019-09-30 13F AAR COM 000361105 30,132 3,473 13.03 1,242 26.61 0.0032
2019-08-14 2019-06-30 13F AAR COM 000361105 26,659 15,244 133.54 981 164.42 0.0032
2019-05-15 2019-03-31 13F AAR COM 000361105 11,415 -90,790 -88.83 371 -92.42 0.0012
2019-02-13 2018-12-31 13F AAR COM 000361105 102,205 0 0.00 4,895 0.00 0.0174
2018-11-08 2018-09-30 13F AAR COM 000361105 102,205 -7,334 -6.70 4,895 -3.89 0.0177
2018-08-03 2018-06-30 13F AAR COM 000361105 109,539 109,439 109,439.00 5,093 127,225.00 0.0173
2018-05-11 2018-03-31 13F AAR COM 000361105 100 -120,954 -99.92 4 -99.92 0.0000
2018-02-08 2017-12-31 13F AAR COM 000361105 121,054 -3,035 -2.45 4,756 1.45 0.0165
2017-11-06 2017-09-30 13F AAR COM 000361105 124,089 15,508 14.28 4,688 24.22 0.0167
2017-07-31 2017-06-30 13F AAR COM 000361105 108,581 14,586 15.52 3,774 19.39 0.0150
2017-05-05 2017-03-31 13F AAR COM 000361105 93,995 1,608 1.74 3,161 3.54 0.0139
2017-02-02 2016-12-31 13F AAR COM 000361105 92,387 13,859 17.65 3,053 24.16 0.0148
2016-11-04 2016-09-30 13F AAR COM 000361105 78,528 4,712 6.38 2,459 42.72 0.0125
2016-08-11 2016-06-30 13F AAR COM 000361105 73,816 997 1.37 1,723 1.65 0.0103
2016-05-10 2016-03-31 13F/A-1 AAR COM 000361105 72,819 3,220 4.63 1,695 -7.38 0.0105
2016-02-03 2015-12-31 13F AAR COM 000361105 69,599 9,738 16.27 1,830 61.09 0.0112
2015-11-02 2015-09-30 13F/A-1 AAR COM 000361105 59,861 10,642 21.62 1,136 -27.60 0.0104
2015-10-30 2015-09-30 13F AAR COM 000361105 59,861 1,136
2015-08-07 2015-06-30 13F/A-1 AAR COM 000361105 49,219 -1,425 -2.81 1,569 0.90 0.0142
2015-08-04 2015-06-30 13F AAR COM 000361105 49,219 -1,425 1,569 0.0142
2015-05-14 2015-03-31 13F/A-1 AAR COM 000361105 50,644 12,354 32.26 1,555 46.15 0.0135
2015-05-01 2015-03-31 13F AAR COM 000361105 50,644 1,555
2015-02-10 2014-12-31 13F AAR COM 000361105 38,290 38,290 1,064 0.0094
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.