Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
654 institutional managers reported holding COO for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 49%. 95 opened new positions; 96 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 23.45M | 11.92% | $1.68B | trimmed -0.6% | ≤2013 |
| BlackRock | 16.62M | 8.45% | $1.19B | added +0.8% | ≤2013 |
| T. Rowe Price Investment Management, INC. | 9.06M | 4.61% | $647.9M | added +53.6% | 2022 Q3 |
| State Street | 8.77M | 4.46% | $627.0M | unchanged | ≤2013 |
| Capital Group (American Funds) | 7.41M | 3.77% | $530.2M | trimmed -27.4% | 2023 Q2 |
| Browning West LP (focused) | 6.98M | 3.55% | $499.1M | added +89.1% | 2025 Q4 |
| Kayne Anderson Rudnick Investment Management LLC | 6.62M | 3.36% | $473.2M | trimmed -8.1% | 2014 Q2 |
| UBS | 5.97M | 3.03% | $426.6M | added +38% | ≤2013 |
| T. Rowe Price | 5.39M | 2.74% | $385.7M | trimmed -10.5% | ≤2013 |
| Geode Capital | 5.31M | 2.70% | $379.8M | added +0.7% | ≤2013 |
| Franklin Resources | 4.87M | 2.47% | $348.1M | added +21% | 2019 Q2 |
| Generation Investment Management LLP (focused) | 4.60M | 2.34% | $328.9M | added +61.4% | 2025 Q4 |
| Longview Partners (Guernsey) LTD (focused) | 3.82M | 1.94% | $273.4M | opened | 2026 Q1 |
| AQR Capital | 3.73M | 1.90% | $266.5M | added +125.4% | ≤2013 |
| Invesco | 3.66M | 1.86% | $261.5M | added +15.5% | ≤2013 |
| JANA Partners (focused) | 3.57M | 1.81% | $254.9M | added +1.3% | 2025 Q3 |
| Diamond Hill Capital Management INC | 3.40M | 1.73% | $243.0M | added +3.4% | 2025 Q3 |
| Neuberger Berman Group LLC | 3.39M | 1.73% | $242.7M | trimmed -6.7% | ≤2013 |
| Wellington Management | 3.37M | 1.71% | $240.7M | trimmed -19.5% | 2023 Q1 |
| Janus Henderson | 3.07M | 1.56% | $219.3M | trimmed -1.3% | ≤2013 |
| MFS Investment Management | 2.62M | 1.33% | $187.2M | trimmed -7% | ≤2013 |
| London CO OF Virginia | 2.24M | 1.14% | $160.0M | added +7.8% | 2025 Q4 |
| Arrowstreet Capital | 2.13M | 1.08% | $152.1M | added +0.8% | 2024 Q3 |
| Dimensional Fund Advisors | 2.07M | 1.05% | $147.9M | added +5.6% | ≤2013 |
| Sustainable Growth Advisers, LP | 2.05M | 1.04% | $146.9M | trimmed -39% | 2025 Q2 |
| River Road Asset Management, LLC | 1.97M | 1.00% | $141.2M | added +24.7% | 2025 Q2 |
| Morgan Stanley | 1.92M | 0.97% | $137.2M | trimmed -4.5% | ≤2013 |
| Charles Schwab Investment Management | 1.81M | 0.92% | $129.1M | added +1.9% | ≤2013 |
| Northern Trust | 1.78M | 0.91% | $127.5M | trimmed -2.8% | ≤2013 |
| Champlain Investment Partners, LLC | 1.61M | 0.82% | $115.0M | trimmed -9.1% | 2014 Q1 |
| Alecta Tjanstepension Omsesidigt | 1.56M | 0.80% | $111.8M | unchanged | 2024 Q4 |
| Manning & Napier Advisors LLC | 1.44M | 0.73% | $103.3M | trimmed -7.7% | 2025 Q4 |
| Bank OF America CORP /DE/ | 1.44M | 0.73% | $102.8M | trimmed -1.5% | ≤2013 |
| Focus Partners Wealth | 1.39M | 0.71% | $99.5M | added +7.5% | 2025 Q2 |
| Findlay Park Partners LLP | 1.33M | 0.68% | $94.9M | trimmed -10.4% | 2025 Q1 |
| Wells Fargo & COMPANY/MN | 1.23M | 0.63% | $87.9M | trimmed -9.1% | ≤2013 |
| Boston Trust Walden CORP | 1.16M | 0.59% | $82.9M | trimmed -6.3% | 2014 Q1 |
| BNY Mellon | 1.10M | 0.56% | $78.6M | trimmed -2.5% | ≤2013 |
| Manufacturers Life Insurance Company, THE | 947.8k | 0.48% | $67.8M | trimmed -3.3% | ≤2013 |
| Bessemer Group INC | 944.1k | 0.48% | $67.5M | added +3.9% | ≤2013 |
| Legal & General Group PLC | 921.3k | 0.47% | $65.9M | trimmed -1.8% | ≤2013 |
| Envestnet Asset Management INC | 871.8k | 0.44% | $62.3M | added +24.7% | ≤2013 |
| Amundi | 823.3k | 0.42% | $58.9M | unchanged | 2016 Q3 |
| Swedbank Robur | 819.2k | 0.42% | $58.6M | trimmed -23.7% | 2021 Q1 |
| Goldman Sachs | 800.3k | 0.41% | $57.2M | added +0.7% | ≤2013 |
| Deutsche Bank AG\ | 784.7k | 0.40% | $56.1M | added +16% | 2013 Q3 |
| Raymond James Financial INC | 749.9k | 0.38% | $53.6M | trimmed -3.7% | 2015 Q2 |
| Nuveen | 746.4k | 0.38% | $53.4M | trimmed -1% | 2019 Q1 |
| ArrowMark Colorado Holdings LLC | 662.4k | 0.34% | $47.4M | trimmed -13.4% | ≤2013 |
| Davenport & CO LLC | 649.5k | 0.33% | $46.4M | added +14.5% | 2023 Q2 |
Largest 50 of 654 shown; the full ranked, searchable register is at boothcheck.com/holders/COO. 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.