Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
560 institutional managers reported holding APG for the quarter ended Mar 31, 2026. Together they hold about 80% of shares outstanding; the top 10 hold 39%. 100 opened new positions; 45 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 35.16M | 8.08% | $1.42B | added +1% | 2020 Q2 |
| BlackRock | 34.35M | 7.90% | $1.39B | added +6% | 2020 Q2 |
| Janus Henderson | 23.37M | 5.37% | $946.7M | added +1.1% | 2021 Q3 |
| T. Rowe Price | 17.02M | 3.91% | $689.5M | trimmed -14.7% | 2024 Q1 |
| Durable Capital Partners LP (focused) | 14.78M | 3.40% | $598.6M | trimmed -1.6% | 2024 Q3 |
| T. Rowe Price Investment Management, INC. | 12.86M | 2.96% | $520.9M | added +578.2% | 2024 Q1 |
| State Street | 11.25M | 2.58% | $455.6M | added +3.5% | 2020 Q2 |
| Geode Capital | 8.21M | 1.89% | $332.6M | added +13.2% | 2020 Q2 |
| Invesco | 6.55M | 1.50% | $265.4M | added +11.9% | 2020 Q2 |
| Artisan Partners | 6.35M | 1.46% | $257.2M | trimmed -4.4% | 2024 Q4 |
| Findlay Park Partners LLP | 5.98M | 1.38% | $242.3M | trimmed -14.8% | 2023 Q2 |
| Viking Global | 5.84M | 1.34% | $236.5M | trimmed -49.4% | 2020 Q2 |
| Pictet Asset Management Holding SA | 5.40M | 1.24% | $218.6M | trimmed -0.6% | 2022 Q4 |
| FMR (Fidelity) | 5.05M | 1.16% | $204.6M | added +33% | 2020 Q4 |
| Montrusco Bolton Investments INC. | 4.65M | 1.07% | $188.5M | added +50.5% | 2025 Q2 |
| Westfield Capital Management CO LP | 4.63M | 1.06% | $187.8M | added +34.2% | 2025 Q4 |
| Capital Research Global Investors | 4.59M | 1.06% | $186.1M | added +1.4% | 2023 Q4 |
| Bessemer Group INC | 4.58M | 1.05% | $185.6M | trimmed -8.3% | 2024 Q2 |
| UBS | 4.14M | 0.95% | $167.7M | added +5% | 2020 Q2 |
| Dimensional Fund Advisors | 3.73M | 0.86% | $151.0M | trimmed -12.5% | 2020 Q4 |
| Allspring Global Investments Holdings, LLC | 3.70M | 0.85% | $149.8M | trimmed -23.5% | 2021 Q4 |
| Clearbridge Investments, LLC | 3.63M | 0.83% | $147.0M | trimmed -8.4% | 2021 Q1 |
| Progeny 3, INC. (focused) | 3.54M | 0.81% | $143.5M | unchanged | 2022 Q3 |
| Morgan Stanley | 3.21M | 0.74% | $129.9M | added +109.9% | 2020 Q2 |
| Gw&k Investment Management, LLC | 3.11M | 0.71% | $126.0M | trimmed -1.9% | 2024 Q1 |
| Royal London Asset Management LTD | 3.07M | 0.71% | $124.5M | added +17.5% | 2024 Q2 |
| Northern Trust | 3.05M | 0.70% | $123.7M | added +6% | 2020 Q2 |
| Charles Schwab Investment Management | 2.93M | 0.67% | $118.8M | added +6.7% | 2020 Q2 |
| Bank OF America CORP /DE/ | 2.51M | 0.58% | $101.8M | trimmed -8.8% | 2020 Q2 |
| Lionstone Capital Management LLC (focused) | 2.48M | 0.57% | $100.3M | unchanged | 2020 Q2 |
| Hood River Capital Management LLC | 2.35M | 0.54% | $95.1M | added +1.3% | 2023 Q4 |
| Milford Funds LTD | 2.18M | 0.50% | $88.5M | trimmed -32.9% | 2025 Q4 |
| Snyder Capital Management L P | 2.18M | 0.50% | $88.5M | trimmed -7.1% | 2021 Q1 |
| BNY Mellon | 2.10M | 0.48% | $85.0M | added +2.3% | 2020 Q2 |
| Third Point (focused) | 2.03M | 0.47% | $82.2M | trimmed -32.3% | 2025 Q4 |
| Capital Group (American Funds) | 1.87M | 0.43% | $75.8M | added +10.8% | 2023 Q2 |
| Gladstone Capital Management LLP (focused) | 1.85M | 0.42% | $74.8M | trimmed -15.4% | 2025 Q3 |
| Schwartz Investment Counsel INC | 1.84M | 0.42% | $74.7M | trimmed -35.2% | 2021 Q1 |
| Cooke & Bieler LP | 1.80M | 0.41% | $73.1M | trimmed -6.3% | 2023 Q1 |
| William Blair Investment Management, LLC | 1.74M | 0.40% | $70.5M | opened | 2026 Q1 |
| Neuberger Berman Group LLC | 1.69M | 0.39% | $68.3M | trimmed -4.3% | 2021 Q3 |
| Assenagon Asset Management S.a. | 1.65M | 0.38% | $66.8M | added +145.3% | 2023 Q3 |
| Gates Capital Management, INC. (focused) | 1.60M | 0.37% | $64.8M | trimmed -12.7% | 2023 Q4 |
| Fisher Investments | 1.56M | 0.36% | $63.1M | trimmed -6.6% | 2023 Q1 |
| ADW Capital Management, LLC (focused) | 1.48M | 0.34% | $60.0M | unchanged | 2020 Q2 |
| M.d. Sass, LLC (focused) | 1.38M | 0.32% | $56.1M | trimmed -31% | 2021 Q3 |
| Teacher Retirement System OF Texas | 1.36M | 0.31% | $55.0M | trimmed -39.6% | 2021 Q1 |
| AllianceBernstein | 1.29M | 0.30% | $52.1M | added +179.3% | 2020 Q2 |
| Spyglass Capital Management LLC (focused) | 1.27M | 0.29% | $51.5M | trimmed -44.5% | 2023 Q3 |
| Congress Asset Management CO | 1.18M | 0.27% | $47.9M | trimmed -9% | 2025 Q4 |
Largest 50 of 560 shown; the full ranked, searchable register is at boothcheck.com/holders/APG. 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.