Who owns AAR Corp. (AIR)
Which tracked institutional funds hold AIR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AIR company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on AIR is one-sided between 2025-Q4 and 2026-Q1: 170 added or opened and 36 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AIR’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes AIR more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AIR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 377 tracked filers holding AIR, 236 increased or opened the position and 143 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AIR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 38
- VANGUARD PORTFOLIO MANAGEMENT LLC$233M
- VANGUARD CAPITAL MANAGEMENT LLC$186M
- Capital Research Global Investors$134M
- VANGUARD FIDUCIARY TRUST CO$28M
- JANE STREET GROUP, LLC$22M
- VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.$14M
Full exits 16
- VANGUARD GROUP INC$311M
- Alyeska Investment Group, L.P.$17M
- Zimmer Partners, LP$14M
- BURKEHILL GLOBAL MANAGEMENT, LP$8M
- Roubaix Capital, LLC$5M
- Jump Financial, LLC$5M
Largest adds
- WESTWOOD HOLDINGS GROUP INC$103M
- STATE STREET CORP$91M
- Invesco Ltd.$55M
- DIMENSIONAL FUND ADVISORS LP$49M
- Broad Bay Capital Management, LP$35M
- UBS Group AG$32M
Largest trims
- WELLINGTON MANAGEMENT GROUP LLP$87M
- FRED ALGER MANAGEMENT, LLC$15M
- CITADEL ADVISORS LLC$9M
- BlackRock, Inc.$7M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$6M
- BARCLAYS PLC$5M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 4,554,924 | $499M | 11.4% | 2026-Q1 |
| STATE STREET CORP added | 2,587,621 | $283M | 6.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,129,922 | $233M | 5.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,944,689 | $213M | 4.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,696,769 | $186M | 4.3% | 2026-Q1 |
| Invesco Ltd. added | 1,350,658 | $148M | 3.4% | 2026-Q1 |
| EARNEST PARTNERS LLC trimmed | 1,305,070 | $143M | 3.3% | 2026-Q1 |
| Capital Research Global Investors new | 1,223,260 | $134M | 3.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 974,334 | $107M | 2.4% | 2026-Q1 |
| WESTWOOD HOLDINGS GROUP INC added | 948,672 | $104M | 2.4% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 828,050 | $91M | 2.1% | 2026-Q1 |
| Broad Bay Capital Management, LP added | 818,325 | $90M | 2.1% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 718,090 | $79M | 1.8% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 675,686 | $74M | 1.7% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 638,885 | $70M | 1.6% | 2026-Q1 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC added | 622,093 | $68M | 1.6% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 621,266 | $68M | 1.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 545,772 | $60M | 1.4% | 2026-Q1 |
| Ophir Asset Management Pty Ltd trimmed | 539,972 | $59M | 1.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 528,944 | $58M | 1.3% | 2026-Q1 |
| MORGAN STANLEY added | 522,689 | $57M | 1.3% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 460,344 | $50M | 1.2% | 2026-Q1 |
| UBS Group AG added | 453,849 | $50M | 1.1% | 2026-Q1 |
| EMERALD ADVISERS, LLC added | 445,693 | $49M | 1.1% | 2026-Q1 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 427,187 | $47M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 401,035 | $44M | 1.0% | 2026-Q1 |
| Nuveen, LLC added | 328,346 | $36M | 0.8% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC trimmed | 323,111 | $35M | 0.8% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 292,248 | $32M | 0.7% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST added | 280,257 | $31M | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 271,166 | $30M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 255,829 | $28M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 245,751 | $27M | 0.6% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ trimmed | 245,125 | $27M | 0.6% | 2026-Q1 |
| Fisher Asset Management, LLC added | 230,570 | $25M | 0.6% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 227,165 | $25M | 0.6% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 221,153 | $24M | 0.6% | 2026-Q1 |
| FMR LLC added | 210,453 | $23M | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 201,643 | $22M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 198,354 | $22M | 0.5% | 2026-Q1 |
| MARSICO CAPITAL MANAGEMENT LLC | 180,458 | $20M | 0.5% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 176,327 | $19M | 0.4% | 2026-Q1 |
| STANSBERRY ASSET MANAGEMENT, LLC trimmed | 170,976 | $19M | 0.4% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 170,887 | $19M | 0.4% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 161,853 | $18M | 0.4% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 160,476 | $17M | 0.4% | 2026-Q1 |
| Public Sector Pension Investment Board added | 139,613 | $15M | 0.4% | 2026-Q1 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. new | 131,738 | $14M | 0.3% | 2026-Q1 |
| Munro Partners added | 119,225 | $13M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 116,694 | $13M | 0.3% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 114,040 | $12M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 111,709 | $12M | 0.3% | 2026-Q1 |
| Bayberry Capital Partners LP new | 110,000 | $12M | 0.3% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 99,794 | $11M | 0.3% | 2026-Q1 |
| Phocas Financial Corp. trimmed | 101,511 | $11M | 0.3% | 2026-Q1 |
| RENAISSANCE GROUP LLC new | 100,431 | $11M | 0.3% | 2026-Q1 |
| KINGDON CAPITAL MANAGEMENT, L.L.C. added | 100,000 | $11M | 0.3% | 2026-Q1 |
| AXIOM INVESTORS LLC /DE new | 93,750 | $10M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 91,617 | $10M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 90,749 | $10M | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 94,973 | $10M | 0.2% | 2026-Q1 |
| MAIRS & POWER INC trimmed | 89,391 | $10M | 0.2% | 2026-Q1 |
| PALISADE CAPITAL MANAGEMENT, LP trimmed | 88,562 | $10M | 0.2% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 87,988 | $10M | 0.2% | 2026-Q1 |
| LORD, ABBETT & CO. LLC added | 86,072 | $9M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 85,145 | $9M | 0.2% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 81,735 | $9M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 81,545 | $9M | 0.2% | 2026-Q1 |
| Canal Insurance CO | 80,000 | $9M | 0.2% | 2026-Q1 |
| De Lisle Partners LLP added | 78,217 | $9M | 0.2% | 2026-Q1 |
| Swiss National Bank | 78,100 | $9M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 73,227 | $8M | 0.2% | 2026-Q1 |
| WISCONSIN CAPITAL MANAGEMENT LLC trimmed | 70,428 | $8M | 0.2% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 67,548 | $7M | 0.2% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 63,992 | $7M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 61,150 | $7M | 0.2% | 2026-Q1 |
| CASTLEARK MANAGEMENT LLC trimmed | 60,264 | $7M | 0.2% | 2026-Q1 |
| G2 Investment Partners Management LLC added | 59,475 | $7M | 0.1% | 2026-Q1 |
| PDT Partners, LLC trimmed | 59,060 | $6M | 0.1% | 2026-Q1 |
| Hudson Bay Capital Management LP trimmed | 58,585 | $6M | 0.1% | 2026-Q1 |
| Stanley-Laman Group, Ltd. trimmed | 56,628 | $6M | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 54,909 | $6M | 0.1% | 2026-Q1 |
| BLAIR WILLIAM & CO/IL trimmed | 47,475 | $5M | 0.1% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 47,473 | $5M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 47,343 | $5M | 0.1% | 2026-Q1 |
| Informed Momentum Co LLC trimmed | 47,122 | $5M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 47,025 | $5M | 0.1% | 2026-Q1 |
| CONGRESS ASSET MANAGEMENT CO new | 46,692 | $5M | 0.1% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC new | 46,000 | $5M | 0.1% | 2026-Q1 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 45,778 | $5M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 45,548 | $5M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 3,754,798 | $311M | 7.1% | 2025-Q4 stale |
| MACQUARIE GROUP LTD added | 362,818 | $33M | 0.7% | 2025-Q3 stale |
| Alyeska Investment Group, L.P. trimmed | 200,000 | $17M | 0.4% | 2025-Q4 stale |
| Zimmer Partners, LP new | 170,000 | $14M | 0.3% | 2025-Q4 stale |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC added | 118,986 | $11M | 0.2% | 2025-Q3 stale |
| Chicago Capital, LLC | 127,951 | $9M | 0.2% | 2025-Q2 stale |
| BURKEHILL GLOBAL MANAGEMENT, LP new | 100,000 | $8M | 0.2% | 2025-Q4 stale |
| New Age Alpha Advisors, LLC trimmed | 63,034 | $6M | 0.1% | 2025-Q3 stale |
| Roubaix Capital, LLC new | 63,009 | $5M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.