Ativo manages or has managed institutional funds for the following clients:
| Account | Client | Strategy | Press Release |
| Chicago Teachers' Pension Fund | United Investment Managers | International | |
| Chicago Teachers' Pension Fund | Progress Investment Management | Small Cap Core | |
| Exelon Corporation Retirement Program | FIS Group | Small Cap Core | |
| Illinois State Board of Investment | Illinois State Board of Investment | Small Cap Core | None |
| Los Angeles City Employees' Retirement System | Attucks Asset Management | Small Cap Growth | |
| Los Angeles Fire and Police Pensions | Attucks Asset Management | Small Cap Growth | |
| Municipal Employees' Annuity and Benefit Fund of Chicago | United Investment Managers | Small Cap Core | |
| New York City Board of Education Retirement System | Attucks Asset Management | Confidential | None |
| New York City Employees' Retirement System | Attucks Asset Management | Confidential | None |
| New York City Police Pension Fund | Attucks Asset Management | Confidential | None |
| New York City Police Pension Fund | Progress Investment Management | Confidential | None |
| Pennsylvania Public School Employees' Retirement System | Public School Employees' Retirement System | Microcap Portfolio | None |
| Teachers' Retirement System of the City of New York | United Investment Managers | Confidential | None |

