SEI INVESTMENTS MANAGEMENT CORP

OAKS, PA · CIK 907692 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 1985 · corporation

Assets managed$216.4bn
Staff434 · 226 in investment roles
Main clients (by assets)Mutual funds and ETFs 47%, Individuals 22%, Private funds 21%
Private funds17 (3 hedge) · $13.2bn gross assets
Websiteseic.com
Form ADV · 2026-09-01SEC adviser record

Kindhedge funds, mutual funds, futures
Others nearbyOaks, PA, London, Chicago, IL, Seattle, WA

As an employer

Offices in2 countries
Private fundsother private 14, hedge 3

Where they work

people there (dot area)number not reportedmain officeHover or tap a dot. Australian and UK companies are placed at their business or registered address, with their staff across the whole country.

Offices

From Form ADV: the main office and the other offices where it does advisory work (at most the 25 largest), with the people doing investment work at each. “About” is worked out: the firm's investment staff less its other offices. Each city links to the other managers there.

City	Country	People
Oaks, PA (main office)United States	United States	about 205
LondonUnited Kingdom	United Kingdom	15
Chicago, ILUnited States	United States	4
Seattle, WAUnited States	United States	2

Map: places from GeoNames (CC BY 4.0), outlines from Natural Earth.

For Q2 2026 this manager filed a 13F notice: its holdings were reported by another manager.