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
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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.
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Employee Geographic Breakdown
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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.
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Employee Sentiment
Sentiment Topics
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