Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
456 institutional managers reported holding CNM for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 46%. 78 opened new positions; 52 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 19.21M | 9.71% | $948.8M | added +1.5% | 2021 Q3 |
| Vanguard Group | 17.78M | 8.98% | $878.5M | added +1% | 2021 Q3 |
| Capital Group (American Funds) | 11.57M | 5.85% | $571.6M | added +83.9% | 2025 Q2 |
| Select Equity Group | 7.25M | 3.67% | $358.4M | trimmed -6.7% | 2021 Q3 |
| Pictet Asset Management Holding SA | 6.51M | 3.29% | $321.8M | trimmed -12.5% | 2021 Q3 |
| First Trust Advisors LP | 6.13M | 3.10% | $302.9M | added +15.3% | 2022 Q1 |
| State Street | 5.78M | 2.92% | $285.5M | added +0.8% | 2021 Q3 |
| Royal London Asset Management LTD | 5.75M | 2.91% | $284.2M | added +1.1% | 2023 Q4 |
| Morgan Stanley | 5.44M | 2.75% | $268.5M | trimmed -62.7% | 2021 Q3 |
| FMR (Fidelity) | 5.40M | 2.73% | $266.9M | trimmed -15% | 2022 Q1 |
| D. E. Shaw | 3.84M | 1.94% | $189.9M | added +55.1% | 2023 Q2 |
| Geode Capital | 3.75M | 1.90% | $185.3M | added +2.9% | 2021 Q3 |
| Janus Henderson | 3.38M | 1.71% | $166.8M | trimmed -27% | 2021 Q3 |
| Amundi | 3.05M | 1.54% | $150.7M | unchanged | 2021 Q3 |
| Impax Asset Management Group plc | 2.85M | 1.44% | $140.9M | trimmed -0.7% | 2023 Q1 |
| Point72 | 2.84M | 1.44% | $140.4M | added +308.9% | 2022 Q4 |
| KBC Group NV | 2.74M | 1.38% | $135.3M | added +4.5% | 2023 Q4 |
| Bessemer Group INC | 2.66M | 1.35% | $131.6M | added +2.8% | 2021 Q3 |
| Dimensional Fund Advisors | 2.66M | 1.34% | $131.5M | added +6.1% | 2022 Q1 |
| Invesco | 2.65M | 1.34% | $130.7M | trimmed -9.3% | 2021 Q3 |
| Fiduciary Management INC /WI/ | 2.48M | 1.25% | $122.6M | trimmed -5% | 2023 Q3 |
| Camrose Capital Investment Partners LLP (focused) | 2.27M | 1.15% | $112.0M | added +30.5% | 2024 Q4 |
| Spruce House Investment Management LLC (focused) | 2.15M | 1.09% | $106.2M | unchanged | 2024 Q1 |
| Findlay Park Partners LLP | 2.00M | 1.01% | $98.6M | opened | 2026 Q1 |
| Charles Schwab Investment Management | 1.95M | 0.99% | $96.5M | added +5% | 2021 Q3 |
| Forest Avenue Capital Management LP (focused) | 1.81M | 0.91% | $89.3M | trimmed -3.8% | 2023 Q4 |
| Samlyn Capital, LLC | 1.77M | 0.90% | $87.5M | trimmed -37.7% | 2023 Q2 |
| Liontrust Investment Partners LLP | 1.73M | 0.88% | $85.5M | unchanged | 2024 Q4 |
| AllianceBernstein | 1.70M | 0.86% | $83.8M | trimmed -5.3% | 2021 Q3 |
| Qube Research & Technologies LTD | 1.66M | 0.84% | $81.8M | added +375.6% | 2025 Q2 |
| Interval Partners, LP | 1.55M | 0.78% | $76.6M | added +26.2% | 2024 Q1 |
| Northern Trust | 1.51M | 0.76% | $74.5M | trimmed -0.6% | 2021 Q3 |
| UBS | 1.43M | 0.72% | $70.4M | added +34% | 2021 Q3 |
| Raymond James Financial INC | 1.31M | 0.66% | $64.8M | trimmed -26.5% | 2021 Q3 |
| Handelsbanken Fonder AB | 1.30M | 0.66% | $64.3M | trimmed -8.8% | 2023 Q2 |
| Cdam (UK) LTD (focused) | 1.26M | 0.64% | $62.4M | trimmed -1% | 2024 Q1 |
| BNY Mellon | 1.23M | 0.62% | $60.9M | added +12.6% | 2021 Q3 |
| Fernbridge Capital Management LP (focused) | 1.17M | 0.59% | $57.9M | trimmed -24.2% | 2024 Q2 |
| Mackenzie Financial CORP | 1.12M | 0.57% | $55.3M | added +45.6% | 2023 Q4 |
| Jane Street | 989.6k | 0.50% | $48.9M | added +775.2% | 2022 Q3 |
| Truist Financial CORP | 947.1k | 0.48% | $46.8M | added +3.2% | 2023 Q3 |
| Assenagon Asset Management S.a. | 932.3k | 0.47% | $46.1M | added +1660.3% | 2024 Q3 |
| ACK Asset Management LLC (focused) | 900.0k | 0.46% | $44.5M | unchanged | 2025 Q3 |
| Dendur Capital LP (focused) | 898.0k | 0.45% | $44.4M | unchanged | 2025 Q3 |
| Hill City Capital, LP (focused) | 867.6k | 0.44% | $42.9M | added +8.9% | 2023 Q2 |
| Swedbank Robur | 853.0k | 0.43% | $42.1M | trimmed -21.3% | 2023 Q1 |
| Allianz Asset Management GmbH | 829.3k | 0.42% | $41.0M | added +21.1% | 2023 Q4 |
| Renaissance Technologies | 814.1k | 0.41% | $40.2M | opened | 2026 Q1 |
| Robeco Institutional Asset Management B.v. | 760.8k | 0.38% | $37.6M | trimmed -9% | 2022 Q1 |
| Goodnow Investment Group, LLC (focused) | 754.0k | 0.38% | $37.2M | trimmed -0.9% | 2024 Q4 |
Largest 50 of 456 shown; the full ranked, searchable register is at boothcheck.com/holders/CNM. 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.