Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
237 institutional managers reported holding AQN for the quarter ended Mar 31, 2026. Together they hold about 67% of shares outstanding; the top 10 hold 40%. 29 opened new positions; 33 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| EdgePoint Investment Group INC. (focused) | 81.47M | 10.55% | $500.2M | unchanged | 2023 Q1 |
| Starboard Value (focused) | 57.19M | 7.40% | $351.1M | trimmed -9.9% | 2023 Q2 |
| FIL LTD | 38.11M | 4.93% | $234.0M | trimmed -22.2% | 2018 Q4 |
| Vanguard Group | 35.08M | 4.54% | $215.4M | added +1.5% | 2016 Q4 |
| Royal Bank OF Canada | 20.55M | 2.66% | $126.2M | added +13.1% | 2016 Q4 |
| Bank OF Montreal /CAN/ | 20.16M | 2.61% | $123.8M | trimmed -2.7% | 2016 Q4 |
| Ariel Investments, LLC | 19.64M | 2.54% | $120.6M | added +23.4% | 2025 Q1 |
| Principal Financial Group INC | 13.63M | 1.76% | $83.7M | added +13% | 2025 Q2 |
| British Columbia Investment Management CORP | 13.31M | 1.72% | $81.7M | added +1.7% | 2023 Q3 |
| Clearbridge Investments, LLC | 12.84M | 1.66% | $78.8M | opened | 2026 Q1 |
| Mitsubishi UFJ Asset Management CO., LTD. | 12.65M | 1.64% | $77.7M | opened | 2026 Q1 |
| Bank OF Nova Scotia | 7.95M | 1.03% | $48.8M | trimmed -22.8% | 2016 Q4 |
| Goldman Sachs | 7.79M | 1.01% | $47.8M | added +36.4% | 2016 Q4 |
| Neuberger Berman Group LLC | 7.73M | 1.00% | $47.5M | added +70.4% | 2025 Q3 |
| Dimensional Fund Advisors | 7.72M | 1.00% | $47.4M | added +1.9% | 2018 Q2 |
| Arrowstreet Capital | 7.32M | 0.95% | $45.0M | added +85.6% | 2024 Q1 |
| Morgan Stanley | 7.09M | 0.92% | $43.5M | added +73.3% | 2016 Q4 |
| Legal & General Group PLC | 6.58M | 0.85% | $40.4M | trimmed -5.2% | 2016 Q4 |
| Private Management Group INC | 6.36M | 0.82% | $39.1M | trimmed -1.1% | 2024 Q3 |
| First Trust Advisors LP | 5.62M | 0.73% | $34.5M | trimmed -18% | 2020 Q2 |
| National Bank OF Canada /FI/ | 5.60M | 0.72% | $34.4M | added +3.3% | 2021 Q4 |
| Picton Mahoney Asset Management | 4.88M | 0.63% | $30.0M | added +38.7% | 2025 Q2 |
| Man Group | 4.83M | 0.63% | $29.7M | added +163.8% | 2024 Q2 |
| Manufacturers Life Insurance Company, THE | 4.47M | 0.58% | $27.4M | unchanged | 2016 Q4 |
| Cibc Asset Management INC | 4.25M | 0.55% | $26.1M | added +463.9% | 2016 Q4 |
| Invesco | 4.10M | 0.53% | $25.2M | added +34.4% | 2016 Q4 |
| Toronto Dominion Bank | 3.75M | 0.48% | $23.0M | trimmed -55.7% | 2016 Q4 |
| Bank OF America CORP /DE/ | 3.56M | 0.46% | $21.8M | added +31.4% | 2016 Q4 |
| Cidel Asset Management INC | 3.54M | 0.46% | $21.7M | added +42.1% | 2016 Q4 |
| D. E. Shaw | 3.40M | 0.44% | $20.9M | trimmed -36.4% | 2023 Q3 |
| Intact Investment Management INC. | 3.30M | 0.43% | $20.3M | trimmed -18.8% | 2016 Q4 |
| Public Employees Retirement System OF Ohio | 3.20M | 0.41% | $19.7M | added +9.1% | 2024 Q4 |
| Gamco Investors, INC. et al | 3.20M | 0.41% | $19.7M | trimmed -2.6% | 2024 Q2 |
| Connor, Clark & Lunn Investment Management LTD. | 2.98M | 0.39% | $18.3M | trimmed -39.7% | 2025 Q2 |
| Federation des caisses Desjardins du Quebec | 2.89M | 0.37% | $17.7M | trimmed -4.6% | 2017 Q1 |
| Cibc World Market INC. | 2.68M | 0.35% | $16.5M | trimmed -27.5% | 2016 Q4 |
| Charles Schwab Investment Management | 2.68M | 0.35% | $16.4M | trimmed -2.5% | 2024 Q2 |
| Russell Investments Group, LTD. | 2.67M | 0.35% | $16.4M | added +1352.6% | 2017 Q2 |
| TD Asset Management INC | 2.57M | 0.33% | $15.8M | added +5.6% | 2017 Q1 |
| State Street | 2.49M | 0.32% | $15.3M | trimmed -2.2% | 2019 Q2 |
| Alberta Investment Management CORP | 2.38M | 0.31% | $14.6M | trimmed -6.9% | 2018 Q4 |
| UBS | 2.32M | 0.30% | $14.2M | added +7% | 2016 Q4 |
| RWC Asset Management LLP | 2.23M | 0.29% | $13.7M | trimmed -4.3% | 2025 Q2 |
| T. Rowe Price | 2.18M | 0.28% | $13.4M | opened | 2026 Q1 |
| GAMCO (Gabelli) | 2.17M | 0.28% | $13.3M | trimmed -0.7% | 2022 Q4 |
| Jupiter Asset Management LTD | 2.02M | 0.26% | $12.4M | added +119.8% | 2025 Q1 |
| Qube Research & Technologies LTD | 1.99M | 0.26% | $12.2M | trimmed -23.9% | 2024 Q4 |
| Renaissance Technologies | 1.95M | 0.25% | $12.0M | added +57.7% | 2024 Q3 |
| TD Waterhouse Canada INC. | 1.54M | 0.20% | $9.5M | added +22.3% | 2024 Q1 |
| Citadel Advisors | 1.53M | 0.20% | $9.4M | trimmed -33.8% | 2017 Q4 |
Largest 50 of 237 shown; the full ranked, searchable register is at boothcheck.com/holders/AQN. 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.