AAR CORP AIR
COM · Common Stock · CUSIP 000361105
Aviation Support Company
- SectorIndustrials
- IndustryAircraft & Parts
- HeadquartersWood Dale, IL
- Founded1951
- Websiteaarcorp.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($3.1m this quarter). Holder counts are more reliable. Shares outstanding: 39.9m as of 2026-06-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $142.89. Options: 7 managers hold calls ($14.5m notional), 6 hold puts ($5.7m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 199 |
| Q4 2022 | 206 |
| Q1 2023 | 208 |
| Q2 2023 | 220 |
| Q3 2023 | 231 |
| Q4 2023 | 229 |
| Q1 2024 | 252 |
| Q2 2024 | 249 |
| Q3 2024 | 243 |
| Q4 2024 | 246 |
| Q1 2025 | 251 |
| Q2 2025 | 262 |
| Q3 2025 | 299 |
| Q4 2025 | 321 |
| Q1 2026 | 380 |
| Q2 2026 | 409 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 125 | 108 |
| Q4 2024 | 115 | 101 |
| Q1 2025 | 115 | 108 |
| Q2 2025 | 116 | 139 |
| Q3 2025 | 161 | 127 |
| Q4 2025 | 184 | 118 |
| Q1 2026 | 226 | 137 |
| Q2 2026 | 227 | 172 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $31.5m | $13.2m | 0.42 |
| Q4 2025 | $3.9m | $1.4m | 0.37 |
| Q1 2026 | $10.5m | $9.4m | 0.89 |
| Q2 2026 | $14.5m | $5.7m | 0.39 |
Biggest buyers
| BlackRock, Inc. | Added | +298.1k |
| STATE STREET CORP | Added | +246.5k |
| Invesco Ltd. | Added | +207.5k |
| FMR LLC | Added | +180.5k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +165.4k |
| BESSEMER GROUP INC | Added | +136.4k |
| Hodges Capital Management Inc. | New | +132.8k |
| PANAGORA ASSET MANAGEMENT INC | New | +116.0k |
| Tributary Capital Management, LLC | New | +109.2k |
| Trexquant Investment LP | Added | +104.4k |
Biggest sellers
| FRANKLIN RESOURCES INC | Reduced | -295.3k |
| JANE STREET GROUP, LLC | Reduced | -181.9k |
| WESTWOOD HOLDINGS GROUP INC | Reduced | -171.2k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -151.2k |
| FRED ALGER MANAGEMENT, LLC | Reduced | -144.5k |
| UBS Group AG | Reduced | -118.7k |
| ROYAL BANK OF CANADA | Reduced | -111.3k |
| Bayberry Capital Partners LP | Sold out | -110.0k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | -97.8k |
| Ophir Asset Management Pty Ltd | Reduced | -92.8k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.3m30.0k shares |
| JANE STREET GROUP, LLC | Added | $3.7m26.0k shares |
| CITADEL ADVISORS LLC | Reduced | $2.2m15.5k shares |
| D. E. Shaw & Co., Inc. | Unchanged | $2.2m15.2k shares |
| IMC-Chicago, LLC | Added | $1.8m12.9k shares |
| SIMPLEX TRADING, LLC | Added | $171.5k1.2k shares |
| GROUP ONE TRADING LLC | Reduced | $71.5k500 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.8m12.7k shares |
| D. E. Shaw & Co., Inc. | Unchanged | $1.4m9.9k shares |
| CITADEL ADVISORS LLC | Reduced | $1.0m7.2k shares |
| IMC-Chicago, LLC | Reduced | $829.0k5.8k shares |
| JANE STREET GROUP, LLC | Reduced | $600.3k4.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $28.6k200 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| STATE STREET CORP 13G · institution +1.2 pts · filed 2026-05-12 | 6.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.4% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.0% |
Fell to 5% or below in the last year: DIMENSIONAL FUND ADVISORS LP (4.9%, 2026-04-09), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 5 | $13.0m | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 5 | $8.1m | — |
| Q4 2025 | 0 | — | 1 | $3.2m | $3.2m |
| Q1 2026 | 0 | — | 6 | $23.5m | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 6.5m $925.1m | Added +298.1k |
| STATE STREET CORP 0.01% of their portfolio | 2.8m $405.1m | Added +246.5k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 2.2m $311.9m | Added +52.5k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 1.9m $276.4m | Reduced -11.1k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 1.7m $245.6m | Added +21.2k |
| Invesco Ltd. 0.02% of their portfolio | 1.6m $228.8m | Added +207.5k |
| EARNEST PARTNERS LLC 0.65% of their portfolio | 1.3m $179.0m | Reduced -53.0k |
| Capital Research Global Investors 0.02% of their portfolio | 1.2m $165.8m | Reduced -63.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.1m $162.9m | Added +165.4k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 783.0k $111.9m | Reduced -45.0k |
| WESTWOOD HOLDINGS GROUP INC 0.84% of their portfolio | 777.4k $111.1m | Reduced -171.2k |
| Broad Bay Capital Management, LP 10.15% of their portfolio | 749.7k $107.2m | Reduced -68.7k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.29% of their portfolio | 742.1k $106.1m | Added +24.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.04% of their portfolio | 633.6k $90.6m | Reduced -42.1k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.26% of their portfolio | 589.5k $84.3m | Reduced -32.6k |
| LOOMIS SAYLES & CO L P 0.10% of their portfolio | 582.6k $83.3m | Reduced -56.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 538.1k $76.9m | Reduced -7.7k |
| EMERALD ADVISERS, LLC 1.76% of their portfolio | 521.9k $74.6m | Added +76.2k |
| MORGAN STANLEY 0.00% of their portfolio | 474.6k $67.8m | Reduced -48.0k |
| Ophir Asset Management Pty Ltd 5.26% of their portfolio | 447.1k $63.9m | Reduced -92.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 437.9k $62.6m | Added +36.8k |
| FMR LLC 0.00% of their portfolio | 391.9k $56.0m | Added +180.5k |
| Nuveen, LLC 0.01% of their portfolio | 386.5k $55.2m | Added +58.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 377.8k $54.0m | Reduced -151.2k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.47% of their portfolio | 350.4k $50.1m | Reduced -76.7k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 349.1k $49.9m | Reduced -111.3k |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.69% of their portfolio | 337.4k $48.2m | Added +57.2k |
| UBS Group AG 0.01% of their portfolio | 335.1k $47.9m | Reduced -118.7k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 326.0k $46.6m | Reduced -295.3k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 281.3k $40.2m | Added +25.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 273.0k $39.0m | Added +1.9k |
| MARSICO CAPITAL MANAGEMENT LLC 0.95% of their portfolio | 254.0k $36.3m | Added +73.5k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.73% of their portfolio | 246.3k $35.2m | Added +1.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 235.4k $33.6m | Reduced -10.3k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 224.3k $32.1m | Reduced -6.2k |
| GAMCO INVESTORS, INC. ET AL 0.29% of their portfolio | 222.9k $31.9m | Reduced -4.3k |
| STANSBERRY ASSET MANAGEMENT, LLC 2.85% of their portfolio | 217.5k $31.1m | Added +46.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 211.6k $30.2m | Added +10.0k |
| ROYCE & ASSOCIATES LP 0.23% of their portfolio | 199.2k $28.5m | Added +28.3k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.04% of their portfolio | 194.4k $27.8m | Reduced -97.8k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 187.5k $26.8m | Reduced -33.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 185.4k $26.5m | Added +71.4k |
| FRED ALGER MANAGEMENT, LLC 0.09% of their portfolio | 178.6k $25.5m | Reduced -144.5k |
| Jupiter Topco LLC 0.01% of their portfolio | 173.9k $24.9m | First filing |
| First Eagle Investment Management, LLC 0.02% of their portfolio | 162.1k $23.2m | Added +98.1k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 0.17% of their portfolio | 154.5k $22.1m | Added +22.8k |
| Munro Partners 0.45% of their portfolio | 139.1k $19.9m | Added +19.9k |
| BESSEMER GROUP INC 0.03% of their portfolio | 137.1k $19.6m | Added +136.4k |
| Public Sector Pension Investment Board 0.05% of their portfolio | 134.8k $19.3m | Reduced -4.8k |
| Hodges Capital Management Inc. 1.27% of their portfolio | 132.8k $19.0m | New |
| SEGALL BRYANT & HAMILL, LLC 0.22% of their portfolio | 128.4k $18.4m | Reduced -24.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 126.5k $18.2m | Added +31.5k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 116.6k $16.7m | Reduced -45.3k |
| PANAGORA ASSET MANAGEMENT INC 0.05% of their portfolio | 116.0k $16.6m | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 114.6k $16.4m | Added +29.4k |
| Trexquant Investment LP 0.10% of their portfolio | 110.7k $15.8m | Added +104.4k |
| Tributary Capital Management, LLC 1.28% of their portfolio | 109.2k $15.6m | New |
| AXIOM INVESTORS LLC /DE 0.13% of their portfolio | 102.4k $14.6m | Added +8.6k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 100.1k $14.3m | Reduced -11.6k |
| PRUDENTIAL FINANCIAL INC 0.02% of their portfolio | 97.9k $14.0m | Added +16.2k |
| Phocas Financial Corp. 1.91% of their portfolio | 96.4k $13.8m | Reduced -5.1k |
| Legal & General Group Plc 0.00% of their portfolio | 95.9k $13.7m | Reduced -20.8k |
| Allspring Global Investments Holdings, LLC 0.02% of their portfolio | 92.1k $13.2m | Reduced -7.7k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 87.3k $12.5m | Reduced -4.3k |
| LORD, ABBETT & CO. LLC 0.03% of their portfolio | 85.3k $12.2m | Reduced -778 |
| MAIRS & POWER INC 0.11% of their portfolio | 83.9k $12.0m | Reduced -5.5k |
| RENAISSANCE GROUP LLC 0.48% of their portfolio | 83.5k $11.9m | Reduced -17.0k |
| HENNESSY ADVISORS INC 0.38% of their portfolio | 83.3k $11.9m | New |
| PALISADE CAPITAL MANAGEMENT, LP 0.50% of their portfolio | 80.5k $11.5m | Reduced -8.1k |
| Canal Insurance CO 2.51% of their portfolio | 80.0k $11.4m | Unchanged |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 79.7k $11.4m | Reduced -1.9k |
| Swiss National Bank 0.01% of their portfolio | 77.6k $11.1m | Reduced -500 |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.35% of their portfolio | 75.4k $10.8m | Reduced -12.6k |
| CASTLEARK MANAGEMENT LLC 0.28% of their portfolio | 73.7k $10.5m | Added +13.4k |
| De Lisle Partners LLP 1.13% of their portfolio | 72.6k $10.4m | Reduced -5.6k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 72.6k $10.4m | Added +41.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 72.5k $10.4m | Added +11.3k |
| G2 Investment Partners Management LLC 1.87% of their portfolio | 72.0k $10.3m | Added +12.5k |
| WISCONSIN CAPITAL MANAGEMENT LLC 4.78% of their portfolio | 70.5k $10.1m | Added +41 |
| ALGERT GLOBAL LLC 0.12% of their portfolio | 70.3k $10.1m | Added +15.4k |
| Jump Financial, LLC 0.09% of their portfolio | 70.2k $10.0m | New |
| GABELLI FUNDS LLC 0.06% of their portfolio | 68.8k $9.8m | Added +1.3k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 62.8k $9.0m | Added +45.8k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 61.0k $8.7m | Added +39.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 60.4k $8.6m | Added +19.3k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 60.1k $8.6m | Reduced -30.6k |
| PDT Partners, LLC 0.44% of their portfolio | 59.1k $8.4m | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 56.8k $8.1m | Added +12.9k |
| Stanley-Laman Group, Ltd. 0.82% of their portfolio | 56.3k $8.1m | Reduced -282 |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 53.7k $7.7m | Added +49.5k |
| KINGDON CAPITAL MANAGEMENT, L.L.C. 1.01% of their portfolio | 52.5k $7.5m | Reduced -47.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 52.4k $7.5m | Added +8.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 50.7k $5.6m | Added +6.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 50.6k $7.2m | Added +3.2k |
| MARTINGALE ASSET MANAGEMENT L P 0.17% of their portfolio | 49.0k $7.0m | Added +7.7k |
| Hennion & Walsh Asset Management, Inc. 0.19% of their portfolio | 46.2k $6.6m | Added +3.6k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 46.2k $6.6m | New |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 46.1k $6.6m | Added +882 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 44.5k $6.4m | Reduced -2.5k |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 43.3k $6.2m | Reduced -4.2k |