Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
483 institutional managers reported holding AGX for the quarter ended Mar 31, 2026. Together they hold about 93% of shares outstanding; the top 10 hold 48%. 128 opened new positions; 73 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 2.12M | 15.00% | $1.15B | added +80% | ≤2013 |
| First Trust Advisors LP | 791.4k | 5.59% | $428.0M | added +32.1% | 2024 Q4 |
| Pacer Advisors, INC. | 644.0k | 4.55% | $348.4M | added +34.1% | 2023 Q4 |
| Renaissance Technologies | 610.9k | 4.32% | $330.4M | added +2.1% | ≤2013 |
| State Street | 517.7k | 3.66% | $280.0M | added +65.9% | 2015 Q4 |
| Maverick Capital | 464.8k | 3.28% | $251.4M | added +5.9% | 2025 Q4 |
| Geode Capital | 459.3k | 3.24% | $248.4M | added +14.7% | ≤2013 |
| American Century Companies INC | 421.6k | 2.98% | $228.1M | trimmed -7.8% | 2023 Q2 |
| Dimensional Fund Advisors | 398.0k | 2.81% | $215.3M | added +1.3% | ≤2013 |
| Lone Pine Capital (focused) | 393.1k | 2.78% | $212.6M | opened | 2026 Q1 |
| UBS | 349.6k | 2.47% | $189.1M | added +97.1% | ≤2013 |
| BNY Mellon | 300.4k | 2.12% | $162.5M | added +20.3% | ≤2013 |
| Invesco | 261.9k | 1.85% | $141.7M | trimmed -8.8% | ≤2013 |
| Jacobs Levy Equity Management, INC | 238.7k | 1.69% | $129.1M | trimmed -8.1% | 2019 Q4 |
| TD Asset Management INC | 207.7k | 1.47% | $112.3M | added +6.7% | 2025 Q3 |
| Epoch Investment Partners, INC. | 202.5k | 1.43% | $109.5M | added +4.5% | 2025 Q3 |
| Goldman Sachs | 175.1k | 1.24% | $94.7M | added +67.4% | 2016 Q2 |
| Morgan Stanley | 160.0k | 1.13% | $86.5M | added +14.1% | ≤2013 |
| Northern Trust | 139.8k | 0.99% | $75.6M | added +9.8% | ≤2013 |
| Charles Schwab Investment Management | 139.6k | 0.99% | $75.5M | added +7% | ≤2013 |
| Arrowstreet Capital | 130.9k | 0.93% | $70.8M | trimmed -40.7% | 2023 Q4 |
| Fuller & Thaler Asset Management, INC. | 114.9k | 0.81% | $62.1M | opened | 2026 Q1 |
| AltraVue Capital, LLC (focused) | 111.8k | 0.79% | $60.5M | trimmed -21.8% | 2018 Q4 |
| Mirae Asset Global Etfs Holdings LTD. | 108.1k | 0.76% | $58.5M | trimmed -37.5% | 2018 Q3 |
| AQR Capital | 106.6k | 0.75% | $57.7M | trimmed -11.4% | 2020 Q2 |
| Principal Financial Group INC | 96.1k | 0.68% | $52.0M | added +121.1% | 2024 Q4 |
| Emerald Advisers, LLC | 95.3k | 0.67% | $51.5M | trimmed -2.9% | 2025 Q3 |
| T. Rowe Price | 91.9k | 0.65% | $49.7M | added +62.1% | 2023 Q1 |
| Allspring Global Investments Holdings, LLC | 86.8k | 0.61% | $46.9M | trimmed -26.4% | 2021 Q4 |
| Wells Fargo & COMPANY/MN | 85.8k | 0.61% | $46.4M | trimmed -56.4% | ≤2013 |
| Jennison Associates LLC | 84.5k | 0.60% | $45.7M | trimmed -16.4% | 2025 Q4 |
| Russell Investments Group, LTD. | 79.1k | 0.56% | $42.8M | trimmed -8.2% | 2016 Q4 |
| Lord, Abbett & CO. LLC | 76.0k | 0.54% | $41.1M | added +33.7% | 2024 Q3 |
| Forest Avenue Capital Management LP (focused) | 74.5k | 0.53% | $40.3M | trimmed -59.8% | 2025 Q3 |
| Citadel Advisors | 68.0k | 0.48% | $36.8M | added +162.2% | 2017 Q2 |
| Kinetic Partners Management, LP (focused) | 62.0k | 0.44% | $33.5M | trimmed -47% | 2025 Q4 |
| Valiant Capital Management, L.p. (focused) | 59.2k | 0.42% | $32.0M | trimmed -55.9% | 2024 Q3 |
| Emerald Mutual Fund Advisers Trust | 58.9k | 0.42% | $31.9M | unchanged | 2025 Q3 |
| Trexquant Investment LP | 57.5k | 0.41% | $31.1M | trimmed -17.5% | 2023 Q4 |
| Mariner, LLC | 56.3k | 0.40% | $30.4M | trimmed -0.5% | 2023 Q4 |
| Deutsche Bank AG\ | 56.2k | 0.40% | $30.4M | added +382.7% | ≤2013 |
| Ranger Investment Management, L.p. | 53.6k | 0.38% | $29.0M | trimmed -54.1% | 2025 Q2 |
| Vaughan Nelson Investment Management, L.p. | 52.1k | 0.37% | $28.2M | opened | 2026 Q1 |
| Public Sector Pension Investment Board | 49.6k | 0.35% | $26.8M | opened | 2026 Q1 |
| Raymond James Financial INC | 44.6k | 0.32% | $24.1M | trimmed -11.6% | 2016 Q4 |
| Ameriprise Financial INC | 42.1k | 0.30% | $22.8M | trimmed -29.4% | 2022 Q3 |
| Sapient Capital LLC | 41.0k | 0.29% | $22.2M | trimmed -20% | 2024 Q3 |
| LPL Financial LLC | 39.8k | 0.28% | $21.5M | added +29.2% | 2024 Q2 |
| SEI Investments CO | 38.6k | 0.27% | $20.9M | added +0.7% | 2023 Q3 |
| William Blair Investment Management, LLC | 38.6k | 0.27% | $20.9M | trimmed -39.2% | 2025 Q3 |
Largest 50 of 483 shown; the full ranked, searchable register is at boothcheck.com/holders/AGX. 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.