Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
1,392 institutional managers reported holding CTAS for the quarter ended Mar 31, 2026. Together they hold about 63% of shares outstanding; the top 10 hold 30%. 119 opened new positions; 171 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 38.93M | 9.62% | $6.58B | unchanged | ≤2013 |
| BlackRock | 26.97M | 6.66% | $4.56B | trimmed -6.8% | ≤2013 |
| State Street | 15.38M | 3.80% | $2.60B | unchanged | ≤2013 |
| Geode Capital | 9.52M | 2.35% | $1.61B | added +2.4% | ≤2013 |
| FMR (Fidelity) | 6.93M | 1.71% | $1.17B | trimmed -5.8% | ≤2013 |
| T. Rowe Price | 5.74M | 1.42% | $971.1M | added +114% | ≤2013 |
| Invesco | 4.59M | 1.14% | $777.0M | added +9.4% | ≤2013 |
| Fort Washington Investment Advisors INC /OH/ | 4.25M | 1.05% | $719.2M | unchanged | ≤2013 |
| Morgan Stanley | 4.23M | 1.05% | $716.1M | trimmed -3.6% | ≤2013 |
| Goldman Sachs | 3.94M | 0.97% | $665.5M | added +61.4% | ≤2013 |
| Northern Trust | 3.83M | 0.95% | $648.0M | trimmed -0.6% | ≤2013 |
| UBS | 3.33M | 0.82% | $563.1M | trimmed -3% | ≤2013 |
| Royal Bank OF Canada | 2.86M | 0.71% | $483.3M | trimmed -8.6% | ≤2013 |
| Nordea Investment Management AB | 2.75M | 0.68% | $464.6M | added +0.7% | ≤2013 |
| Nuveen | 2.48M | 0.61% | $419.5M | added +136.8% | ≤2013 |
| Amundi | 2.40M | 0.59% | $406.3M | added +6.3% | 2017 Q4 |
| Franklin Resources | 2.39M | 0.59% | $404.9M | trimmed -7.2% | ≤2013 |
| Two Sigma | 2.36M | 0.58% | $399.1M | added +93.8% | 2019 Q3 |
| Legal & General Group PLC | 2.35M | 0.58% | $396.9M | added +0.8% | ≤2013 |
| Ameriprise Financial INC | 2.27M | 0.56% | $384.4M | added +3.8% | ≤2013 |
| BNY Mellon | 2.21M | 0.55% | $374.0M | trimmed -2.4% | ≤2013 |
| Pictet Asset Management Holding SA | 2.17M | 0.54% | $366.6M | added +8.3% | ≤2013 |
| Charles Schwab Investment Management | 2.08M | 0.51% | $351.4M | added +2.3% | ≤2013 |
| Arrowstreet Capital | 2.04M | 0.50% | $345.1M | added +34.8% | 2020 Q2 |
| Dimensional Fund Advisors | 1.90M | 0.47% | $320.8M | added +17.2% | ≤2013 |
| Brown Advisory INC | 1.89M | 0.47% | $320.4M | added +118.2% | 2018 Q1 |
| King Luther Capital Management CORP | 1.71M | 0.42% | $289.8M | trimmed -5.4% | 2018 Q1 |
| American Century Companies INC | 1.59M | 0.39% | $268.1M | added +33.9% | 2018 Q1 |
| Impax Asset Management Group plc | 1.50M | 0.37% | $254.3M | added +11.7% | 2021 Q3 |
| Citadel Advisors | 1.47M | 0.36% | $247.8M | added +125.4% | ≤2013 |
| Vontobel Holding LTD. | 1.41M | 0.35% | $238.8M | added +1285.3% | 2020 Q4 |
| ProShare Advisors LLC | 1.41M | 0.35% | $237.7M | trimmed -7.2% | ≤2013 |
| Wells Fargo & COMPANY/MN | 1.37M | 0.34% | $232.3M | trimmed -3.7% | ≤2013 |
| Wellington Management | 1.36M | 0.34% | $230.2M | added +95.5% | 2016 Q1 |
| Bank OF America CORP /DE/ | 1.34M | 0.33% | $226.0M | trimmed -16% | ≤2013 |
| AllianceBernstein | 1.33M | 0.33% | $224.7M | added +11% | ≤2013 |
| Deutsche Bank AG\ | 1.31M | 0.32% | $220.8M | added +4.8% | ≤2013 |
| BNP Paribas Financial Markets | 1.30M | 0.32% | $219.1M | trimmed -19% | 2013 Q3 |
| Alecta Tjanstepension Omsesidigt | 1.28M | 0.32% | $215.7M | trimmed -8.3% | 2019 Q1 |
| Stifel Financial CORP | 1.21M | 0.30% | $205.1M | trimmed -1.1% | 2015 Q1 |
| PNC Financial Services Group, INC. | 1.16M | 0.29% | $196.8M | added +2.5% | ≤2013 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.14M | 0.28% | $193.5M | added +4.3% | ≤2013 |
| Qube Research & Technologies LTD | 1.14M | 0.28% | $192.5M | trimmed -26.8% | 2020 Q1 |
| Clearbridge Investments, LLC | 1.09M | 0.27% | $184.0M | added +8.2% | 2023 Q3 |
| Millennium Management | 1.08M | 0.27% | $182.3M | added +3.8% | 2017 Q3 |
| Swiss National Bank | 1.06M | 0.26% | $178.6M | added +6.6% | ≤2013 |
| Assenagon Asset Management S.a. | 1.03M | 0.25% | $173.6M | added +131.2% | 2017 Q3 |
| Blair William & CO/IL | 973.6k | 0.24% | $164.6M | trimmed -2.2% | ≤2013 |
| Bank OF Montreal /CAN/ | 968.0k | 0.24% | $163.7M | trimmed -2.2% | ≤2013 |
| Hsbc Holdings PLC | 909.8k | 0.23% | $153.9M | added +2% | ≤2013 |
Largest 50 of 1,392 shown; the full ranked, searchable register is at boothcheck.com/holders/CTAS. 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.