Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
424 institutional managers reported holding MGA for the quarter ended Mar 31, 2026. Together they hold about 64% of shares outstanding; the top 10 hold 31%. 57 opened new positions; 58 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Pzena Investment Management | 25.33M | 8.97% | $1.41B | trimmed -13% | 2022 Q4 |
| Vanguard Group | 13.07M | 4.63% | $729.7M | added +5.8% | 2015 Q1 |
| Royal Bank OF Canada | 10.31M | 3.65% | $575.6M | trimmed -13.6% | ≤2013 |
| Hotchkis & Wiley Capital Management LLC | 9.84M | 3.48% | $549.7M | unchanged | 2016 Q2 |
| Bank OF Montreal /CAN/ | 5.64M | 2.00% | $314.9M | added +6.3% | ≤2013 |
| ACR Alpine Capital Research, LLC (focused) | 4.85M | 1.72% | $270.7M | trimmed -19.3% | 2018 Q4 |
| FIL LTD | 4.82M | 1.71% | $269.3M | trimmed -37.8% | 2019 Q1 |
| TD Asset Management INC | 4.72M | 1.67% | $263.8M | trimmed -0.6% | ≤2013 |
| Arrowstreet Capital | 4.45M | 1.58% | $248.6M | trimmed -0.8% | 2019 Q1 |
| Dimensional Fund Advisors | 4.29M | 1.52% | $239.3M | added +14% | ≤2013 |
| Morgan Stanley | 4.22M | 1.49% | $235.6M | added +60.1% | ≤2013 |
| Letko, Brosseau & Associates INC | 3.95M | 1.40% | $220.5M | trimmed -2.9% | ≤2013 |
| Arga Investment Management, LP | 3.77M | 1.33% | $210.6M | trimmed -10.1% | 2024 Q3 |
| Legal & General Group PLC | 3.71M | 1.31% | $207.3M | added +0.9% | ≤2013 |
| Goldman Sachs | 3.06M | 1.08% | $171.0M | added +19.3% | ≤2013 |
| Cibc World Market INC. | 2.86M | 1.01% | $159.6M | trimmed -52.8% | ≤2013 |
| Geode Capital | 2.73M | 0.97% | $152.4M | added +12.5% | 2017 Q3 |
| National Bank OF Canada /FI/ | 2.67M | 0.94% | $148.9M | trimmed -2.2% | 2021 Q4 |
| Bank OF America CORP /DE/ | 2.26M | 0.80% | $126.2M | added +1.4% | ≤2013 |
| Manufacturers Life Insurance Company, THE | 2.24M | 0.79% | $125.3M | added +43.5% | ≤2013 |
| Russell Investments Group, LTD. | 2.14M | 0.76% | $119.6M | added +2.4% | 2016 Q4 |
| Federation des caisses Desjardins du Quebec | 2.10M | 0.74% | $117.1M | trimmed -21.7% | 2017 Q2 |
| AQR Capital | 1.98M | 0.70% | $110.5M | added +19% | 2025 Q1 |
| TD Waterhouse Canada INC. | 1.92M | 0.68% | $107.4M | added +178.9% | 2021 Q4 |
| Amundi | 1.71M | 0.60% | $95.5M | added +16.9% | 2017 Q4 |
| Charles Schwab Investment Management | 1.60M | 0.57% | $89.6M | trimmed -1% | 2024 Q2 |
| CPP Investment Board | 1.59M | 0.56% | $88.8M | trimmed -21.8% | 2021 Q4 |
| Toronto Dominion Bank | 1.54M | 0.54% | $85.9M | trimmed -6.7% | ≤2013 |
| D. E. Shaw | 1.52M | 0.54% | $84.7M | added +14465.8% | 2015 Q3 |
| Mackenzie Financial CORP | 1.50M | 0.53% | $83.8M | trimmed -4.7% | ≤2013 |
| Mufg Bank, LTD. | 1.39M | 0.49% | $77.6M | added +244.3% | 2024 Q1 |
| Lazard Asset Management LLC | 1.39M | 0.49% | $77.5M | added +17.4% | 2025 Q3 |
| Cibc Asset Management INC | 1.28M | 0.45% | $71.7M | trimmed -0.8% | ≤2013 |
| Two Sigma | 1.25M | 0.44% | $69.5M | added +6708.2% | 2024 Q1 |
| Intact Investment Management INC. | 1.24M | 0.44% | $69.2M | trimmed -21.3% | ≤2013 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 1.22M | 0.43% | $67.9M | added +8.8% | 2018 Q1 |
| Envestnet Asset Management INC | 1.13M | 0.40% | $63.2M | added +13.8% | ≤2013 |
| Invesco | 1.12M | 0.40% | $62.8M | trimmed -10.7% | ≤2013 |
| Oppenheimer Asset Management INC. | 1.05M | 0.37% | $58.6M | trimmed -17.6% | 2018 Q4 |
| BCV Asset Management INC. | 964.1k | 0.34% | $53.8M | trimmed -0.6% | 2025 Q4 |
| Picton Mahoney Asset Management | 958.0k | 0.34% | $53.5M | added +28.5% | 2025 Q3 |
| Swiss National Bank | 901.1k | 0.32% | $50.3M | added +27% | ≤2013 |
| BlackRock | 890.9k | 0.32% | $49.7M | added +26.8% | ≤2013 |
| SEB Asset Management AB | 889.1k | 0.32% | $49.6M | opened | 2026 Q1 |
| Bank OF Nova Scotia | 882.8k | 0.31% | $49.3M | trimmed -61.6% | ≤2013 |
| Man Group | 880.6k | 0.31% | $49.2M | added +49% | 2024 Q1 |
| Millennium Management | 843.0k | 0.30% | $47.1M | added +135.5% | 2019 Q4 |
| Hillsdale Investment Management INC. | 832.6k | 0.29% | $46.5M | added +14.8% | 2025 Q3 |
| Deutsche Bank AG\ | 828.5k | 0.29% | $46.3M | added +45.3% | 2013 Q3 |
| Franklin Resources | 819.8k | 0.29% | $45.8M | added +893.4% | ≤2013 |
Largest 50 of 424 shown; the full ranked, searchable register is at boothcheck.com/holders/MGA. 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.