Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
362 institutional managers reported holding AIR for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 55%. 87 opened new positions; 40 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 6.17M | 15.63% | $675.9M | added +1% | ≤2013 |
| Vanguard Group | 4.15M | 10.50% | $453.9M | added +2.1% | ≤2013 |
| State Street | 2.59M | 6.55% | $283.3M | added +11.5% | 2015 Q4 |
| Dimensional Fund Advisors | 1.94M | 4.92% | $212.9M | trimmed -1.8% | ≤2013 |
| Invesco | 1.39M | 3.53% | $152.6M | added +24.1% | ≤2013 |
| Earnest Partners LLC | 1.31M | 3.30% | $142.9M | trimmed -2.9% | 2021 Q4 |
| Capital Research Global Investors | 1.22M | 3.10% | $133.9M | opened | 2026 Q1 |
| Geode Capital | 974.3k | 2.47% | $106.7M | added +5.8% | ≤2013 |
| Westwood Holdings Group INC | 948.7k | 2.40% | $103.9M | added +8183.9% | 2024 Q2 |
| American Century Companies INC | 828.0k | 2.10% | $90.6M | unchanged | 2017 Q2 |
| Broad Bay Capital Management, LP (focused) | 818.3k | 2.07% | $89.6M | added +23.2% | 2025 Q3 |
| Fuller & Thaler Asset Management, INC. | 718.1k | 1.82% | $78.6M | added +6.7% | 2025 Q3 |
| Principal Financial Group INC | 675.7k | 1.71% | $74.0M | added +4.9% | ≤2013 |
| Loomis Sayles & CO L P | 638.9k | 1.62% | $69.9M | trimmed -22.5% | 2023 Q1 |
| Barrow Hanley Mewhinney & Strauss LLC | 622.1k | 1.57% | $68.1M | added +4.6% | 2025 Q3 |
| Franklin Resources | 621.3k | 1.57% | $68.0M | trimmed -25% | 2021 Q4 |
| Charles Schwab Investment Management | 545.8k | 1.38% | $59.7M | added +2.6% | ≤2013 |
| Ophir Asset Management Pty LTD (focused) | 540.0k | 1.37% | $59.1M | trimmed -1.7% | 2024 Q4 |
| UBS | 535.4k | 1.35% | $58.6M | added +83.9% | ≤2013 |
| Wellington Management | 528.9k | 1.34% | $57.9M | trimmed -69.7% | 2025 Q2 |
| Morgan Stanley | 522.7k | 1.32% | $57.2M | added +10.2% | ≤2013 |
| Royal Bank OF Canada | 460.3k | 1.17% | $50.4M | trimmed -7.4% | ≤2013 |
| Emerald Advisers, LLC | 445.7k | 1.13% | $48.8M | added +6.3% | 2023 Q2 |
| Frontier Capital Management CO LLC | 427.2k | 1.08% | $46.8M | trimmed -9.2% | 2025 Q3 |
| Northern Trust | 401.0k | 1.01% | $43.9M | added +4.8% | ≤2013 |
| Nuveen | 328.3k | 0.83% | $35.9M | added +174.2% | 2019 Q2 |
| Fred Alger Management, LLC | 323.1k | 0.82% | $35.4M | trimmed -47% | 2023 Q3 |
| Nomura Asset Management International INC. | 292.2k | 0.74% | $32.0M | trimmed -20.2% | 2025 Q2 |
| Emerald Mutual Fund Advisers Trust | 280.3k | 0.71% | $30.7M | added +10.9% | 2022 Q4 |
| BNY Mellon | 271.2k | 0.69% | $29.7M | trimmed -3% | ≤2013 |
| Bank OF America CORP /DE/ | 245.8k | 0.62% | $26.9M | trimmed -2.2% | ≤2013 |
| Oberweis Asset Management INC/ | 245.1k | 0.62% | $26.8M | trimmed -10.1% | 2025 Q1 |
| Fisher Investments | 230.6k | 0.58% | $25.2M | added +11.4% | 2014 Q2 |
| Gamco Investors, INC. et al | 227.2k | 0.57% | $24.9M | trimmed -5.8% | 2013 Q3 |
| SEI Investments CO | 221.2k | 0.56% | $24.2M | trimmed -6.6% | ≤2013 |
| FMR (Fidelity) | 211.5k | 0.54% | $23.1M | added +12.9% | 2017 Q4 |
| Goldman Sachs | 201.6k | 0.51% | $22.1M | added +27% | ≤2013 |
| Jane Street | 198.4k | 0.50% | $21.7M | opened | 2026 Q1 |
| Marsico Capital Management LLC | 180.5k | 0.46% | $19.8M | unchanged | 2025 Q2 |
| Janus Henderson | 176.3k | 0.45% | $19.3M | trimmed -5.9% | 2021 Q4 |
| Stansberry Asset Management, LLC | 171.0k | 0.43% | $18.7M | trimmed -11.6% | 2024 Q1 |
| Royce & Associates | 170.9k | 0.43% | $18.7M | trimmed -3.6% | 2020 Q2 |
| Raymond James Financial INC | 161.9k | 0.41% | $17.7M | trimmed -0.7% | 2024 Q4 |
| Segall Bryant & Hamill, LLC | 160.5k | 0.41% | $17.6M | trimmed -28% | 2020 Q1 |
| Public Sector Pension Investment Board | 139.6k | 0.35% | $15.3M | added +3.4% | ≤2013 |
| VAN Lanschot Kempen Investment Management N.v. | 131.7k | 0.33% | $14.4M | opened | 2026 Q1 |
| Munro Partners | 119.2k | 0.30% | $13.1M | added +10.1% | 2025 Q4 |
| Legal & General Group PLC | 116.7k | 0.29% | $12.8M | trimmed -4.7% | 2014 Q3 |
| Envestnet Asset Management INC | 114.0k | 0.29% | $12.5M | unchanged | 2020 Q4 |
| Rhumbline Advisers | 111.7k | 0.28% | $12.2M | added +2.2% | ≤2013 |
Largest 50 of 362 shown; the full ranked, searchable register is at boothcheck.com/holders/AIR. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.