Mesirow Financial Investment Management, Inc. is an SEC registered investment adviser organized as a corporation with a primary office location in Chicago, IL. Its latest Form ADV filing, dated April 1, 2026, reports $43.4B in regulatory assets under management, 197 employees, 11 offices, and 14,109 accounts.
Portfolio management for individuals and small businesses
Fee models offered
2 types reported
Asset based fees
Performance-based fees
Source verified May 13, 2026
Client Coverage Demographics
Top client segmentHNWI represent 99.0% of total clients.
Top client categories% of clientsClients
1
HNWI
99.0%
14,039
2
Government
0.4%
53
3
Corporations
0.2%
27
4
ENDOWMENT
0.1%
18
5
Individuals
0.1%
15
Additional categories (<0.1%)
Pooled Investment Vehicles7 clients
Investment Cos.<5 clients
Sovereign Wealth<5 clients
Banks<5 clients
Pension Plans<5 clients
Regulatory Assets Under Management Breakdown
Total regulatory assets under management$43.4Bas of April 1, 2026
Discretionary97.3%
$42.3B
97% of total RAUM97.3%
Non-discretionary2.7%
$1.2B
3% of total RAUM2.7%
Regulatory assets under management are split between discretionary and non-discretionary assets.
Assets under management Growth by Quarter
Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.
Total AUM$43.4B
Total Accounts14,109
10Y AUM Change+$24.0B (+123.8%)
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Employee Growth by Quarter
Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.
Total Employees197
Clients per Employee72:1
10Y Employee Change+20 (+11.3%)
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Historical AUM and employee figures reflect available SEC Form ADV filings under this CRD. Filing gaps may reflect registration status changes, dormant periods, state registration periods, firm restructuring, or other reporting changes. Rialytix does not interpolate missing periods.
* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.