How many employees work at MIO Partners?

MIO Partners, Inc. has 643 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 0.1%.

Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025

About MIO Partners

MIO (and related entities) is an indirect, wholly-owned subsidiary of McKinsey & Company and was formed in the early 1980s to provide asset management services for McKinsey’s retirement plan. Over time, we have expanded to support after-tax investments by McKinsey’s current and former partners, primarily by making available funds already offered in the retirement plan. Our aim was to provide partners with convenient, time-saving investment options, including access to alternative investments. Today, we are a company of approximately 200 people managing retirement and after-tax investments for roughly 30,000 current and former McKinsey employees. A key element of our operating model is that we operate at-cost, generating no profit for either MIO or McKinsey. Our incentives are aligned with those of our investors due to significant management participation in the funds.

As of December 2025

MIO Partners
workforce metrics

Headcount

643

Avg. Salary

$218.6k

Tenure

6.9yr

Growth Rate

0.1%

Hiring Rate

Attrition Rate

For even more metrics data,
reach out to our sales team.

Contact Sales

Employee Headcount

Interactive chart of MIO Partners annual worldwide employee count from 2023 to 2025.

  • MIO Partners total number of employees in 2025 was 643, a 0.1% increase from 2024.
  • MIO Partners total number of employees in 2024 was 643, a 1.9% increase from 2023.
  • MIO Partners total number of employees in 2023 was 630, a 1.3% increase from 2022.

Would you like to see the latest employee headcount data?

Contact Sales

Employee Geographic Breakdown

Would you like to see the latest employee geographic data?

Contact Sales

Employee Role Breakdown

Would you like to see the latest employee role breakdown data?

Contact Sales

Employee Compensation

Would you like to see the latest employee compensation data?

Contact Sales

Active Job Postings

Interactive chart of MIO Partners annual active job postings from 2023 to 2025.

  • MIO Partners active job postings in 2025 was 11, a 44.4% increase from 2024.
  • MIO Partners active job postings in 2024 was 7, a 33.3% increase from 2023.
  • MIO Partners active job postings in 2023 was 5, a 66.7% decline from 2022.

Would you like to see the latest active job postings data?

Contact Sales

Employee Sentiment

Sentiment Topics

Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales

Would you like to see the latest employee sentiment data?

Contact Sales