Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
241 institutional managers reported holding OR for the quarter ended Mar 31, 2026. Together they hold about 69% of shares outstanding; the top 10 hold 40%. 48 opened new positions; 24 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) | 19.46M | 10.36% | $740.2M | trimmed -9.7% | 2016 Q3 |
| VAN ECK Associates CORP | 10.47M | 5.58% | $398.3M | trimmed -14.6% | 2016 Q3 |
| T. Rowe Price | 9.40M | 5.01% | $357.6M | trimmed -14% | 2024 Q1 |
| Vanguard Group | 7.98M | 4.25% | $303.7M | added +1.5% | 2016 Q3 |
| Mirae Asset Global Etfs Holdings LTD. | 7.06M | 3.76% | $268.4M | trimmed -3.6% | 2024 Q4 |
| T. Rowe Price Investment Management, INC. | 6.31M | 3.36% | $240.0M | added +935.9% | 2024 Q3 |
| Arrowstreet Capital | 3.68M | 1.96% | $139.8M | trimmed -23.9% | 2024 Q2 |
| Picton Mahoney Asset Management | 3.34M | 1.78% | $127.0M | added +5.7% | 2025 Q2 |
| FMR (Fidelity) | 3.30M | 1.76% | $125.5M | trimmed -30.6% | 2016 Q3 |
| Elliott Investment Management (focused) | 3.11M | 1.66% | $118.3M | unchanged | 2025 Q1 |
| Tidal Investments LLC | 2.73M | 1.45% | $103.8M | trimmed -7.3% | 2024 Q4 |
| Royal Bank OF Canada | 2.69M | 1.44% | $102.5M | added +5.1% | 2016 Q3 |
| Two Sigma | 2.39M | 1.27% | $91.0M | added +78.6% | 2019 Q3 |
| Caisse de depot et placement du Quebec | 2.38M | 1.27% | $90.7M | unchanged | 2016 Q3 |
| Sprott INC. | 2.36M | 1.26% | $89.9M | trimmed -1.3% | 2016 Q3 |
| Invesco | 2.12M | 1.13% | $80.8M | added +47.3% | 2016 Q3 |
| Mackenzie Financial CORP | 2.06M | 1.10% | $78.5M | trimmed -37.4% | 2017 Q4 |
| Connor, Clark & Lunn Investment Management LTD. | 1.93M | 1.03% | $73.6M | trimmed -7.4% | 2022 Q4 |
| Morgan Stanley | 1.90M | 1.01% | $72.2M | added +61.4% | 2016 Q3 |
| Horizon Kinetics Asset Management LLC | 1.75M | 0.93% | $66.7M | trimmed -3.4% | 2020 Q2 |
| Citadel Advisors | 1.53M | 0.82% | $58.3M | added +8.1% | 2018 Q1 |
| Bank OF Montreal /CAN/ | 1.46M | 0.78% | $55.6M | trimmed -5.4% | 2016 Q3 |
| Capital Group (American Funds) | 1.45M | 0.77% | $55.2M | opened | 2026 Q1 |
| Goldman Sachs | 1.40M | 0.75% | $53.3M | added +96.8% | 2016 Q3 |
| Verbena Value LP (focused) | 1.29M | 0.69% | $49.3M | added +85.3% | 2025 Q4 |
| Millennium Management | 1.16M | 0.62% | $44.2M | added +78.5% | 2017 Q1 |
| Amundi | 1.15M | 0.61% | $43.8M | added +8.4% | 2017 Q4 |
| Qube Research & Technologies LTD | 1.14M | 0.61% | $43.4M | added +19.9% | 2022 Q4 |
| Euro Pacific Asset Management, LLC | 1.03M | 0.55% | $39.0M | unchanged | 2019 Q4 |
| Bank OF America CORP /DE/ | 1.01M | 0.54% | $38.3M | added +37.4% | 2016 Q3 |
| TD Asset Management INC | 895.0k | 0.48% | $34.0M | added +0.6% | 2016 Q3 |
| Verition Fund Management | 858.6k | 0.46% | $32.7M | added +77.1% | 2021 Q3 |
| Scheer, Rowlett & Associates Investment Management LTD. (focused) | 840.5k | 0.45% | $32.0M | trimmed -4.2% | 2024 Q2 |
| Renaissance Technologies | 783.3k | 0.42% | $29.8M | added +86.2% | 2017 Q2 |
| Nuveen | 777.8k | 0.41% | $29.6M | added +129.3% | 2023 Q4 |
| Principal Financial Group INC | 751.7k | 0.40% | $28.6M | trimmed -43.4% | 2023 Q1 |
| Dimensional Fund Advisors | 677.8k | 0.36% | $25.8M | added +26.5% | 2017 Q4 |
| MFS Investment Management | 660.1k | 0.35% | $25.1M | trimmed -33.5% | 2025 Q3 |
| Manufacturers Life Insurance Company, THE | 635.5k | 0.34% | $24.2M | added +3.8% | 2016 Q3 |
| U S Global Investors INC | 534.6k | 0.28% | $20.3M | added +55.8% | 2020 Q3 |
| Man Group | 472.7k | 0.25% | $18.0M | trimmed -3.8% | 2025 Q1 |
| Jane Street | 422.5k | 0.23% | $16.1M | added +49.4% | 2016 Q3 |
| Charles Schwab Investment Management | 422.3k | 0.23% | $16.1M | trimmed -3% | 2024 Q2 |
| Federation des caisses Desjardins du Quebec | 389.5k | 0.21% | $14.8M | trimmed -4.1% | 2017 Q2 |
| Boston Partners | 386.4k | 0.21% | $14.7M | added +508.3% | 2025 Q4 |
| Manning & Napier Advisors LLC | 375.8k | 0.20% | $14.3M | trimmed -3.6% | 2025 Q3 |
| Swiss National Bank | 374.4k | 0.20% | $14.2M | unchanged | 2016 Q3 |
| Allspring Global Investments Holdings, LLC | 323.5k | 0.17% | $12.3M | added +14.1% | 2024 Q2 |
| American Century Companies INC | 293.7k | 0.16% | $11.2M | added +33.7% | 2020 Q2 |
| Cibc World Market INC. | 284.5k | 0.15% | $10.8M | trimmed -21.2% | 2016 Q3 |
Largest 50 of 241 shown; the full ranked, searchable register is at boothcheck.com/holders/OR. 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.