Sei Investments Management Corp

Registered investment adviser · Oaks, PA · CRD #105146

Form ADV data as of 2026-09-01

Regulatory assets

$216.43 billion

Total accounts

112,627

Employees

434

Disclosure events

Firm details

Website: http://www.seic.com
Telephone: 610-676-1000
SEC file number: 801-24593
Most recent Form ADV filing: 2026-08-31
SEC record: View this firm on the SEC's IAPD site

Disciplinary disclosures

This firm reports 4 disclosure questions answered Yes, covering 4 reported events. Form ADV Item 11 covers charges and pending proceedings as well as findings, so a Yes answer is not itself a finding of wrongdoing. The underlying detail is filed with the SEC.

SEC or CFTC found a violation of its regulations or statutes
SEC or CFTC entered an order in connection with investment-related activity
SEC or CFTC imposed a civil money penalty or a cease-and-desist order
A court dismissed an investment-related civil action under a settlement agreement

Assets and accounts

Provides continuous and regular supervisory or management services	Yes
Discretionary regulatory assets under management	$211.99 billion
Non-discretionary regulatory assets under management	$4.44 billion
Total regulatory assets under management	$216.43 billion
Discretionary accounts	112,625
Non-discretionary accounts	2
Total accounts	112,627
Regulatory assets under management attributable to non-U.S. persons	$146.6 million

People

Total employees (excluding clerical)	434
Employees performing investment advisory functions (including research)	226
Employees who are registered representatives of a broker-dealer	91
Employees registered as investment adviser representatives with a state	117
Employees registered as IARs for another investment adviser	0
Employees who are licensed insurance agents	0
Firms or persons who solicit advisory clients on the firm's behalf	25

Custody

Has custody of client cash or bank accounts	Yes
Has custody of client securities	Yes
Client funds and securities held in the firm's custody	$3.7 million
Clients for whom the firm has custody	85
A related person has custody of client cash or bank accounts	Yes
A related person has custody of client securities	Yes
Client funds and securities held in a related person's custody	$122.85 billion
Clients for whom a related person has custody	112,625
The firm acts as a qualified custodian	No
A related person acts as a qualified custodian	Yes
Number of persons acting as qualified custodians for the firm's clients	3

How the firm is compensated

A percentage of assets under managementFixed fees (other than subscription fees)Performance-based fees

Advisory services offered

Financial planning servicesPortfolio management for individuals and/or small businessesPortfolio management for investment companiesPortfolio management for pooled investment vehiclesPortfolio management for businesses or institutional clientsPension consulting servicesSelection of other advisers (including private fund managers)Publication of periodicals or newslettersEducational seminars/workshops

Other business activities

Commodity pool operator or commodity trading advisor

Affiliated related persons

Broker-dealer, municipal securities dealer, or government securities broker or dealerOther investment adviser (including financial planners)Commodity pool operator or commodity trading advisorBanking or thrift institutionTrust companyAccountant or accounting firmSponsor or syndicator of limited partnershipsSponsor, general partner, or managing member of pooled investment vehicles

Reported conflicts of interest

Form ADV Items 8 asks advisers to disclose arrangements that may create a conflict with client interests. This firm answered Yes to:

Buys or sells for itself securities it also recommends to clients
Recommends securities in which it has another proprietary interest
Executes agency cross transactions involving advisory client securities
Recommends securities for which it serves as underwriter or general partner
Brokers or dealers selected under 8.C.(3) are related persons
Recommends brokers or dealers to clients
Brokers or dealers recommended under 8.E. are related persons
Compensates a non-employee for client referrals
Provides employee compensation specifically for obtaining clients

Client types

Type of client	Clients	Assets
Individuals (other than high net worth individuals)	110,959	$47.68 billion
High net worth individuals	726	$5.00 billion
Banking or thrift institutions	93	$935.5 million
Investment companies	1	$100.73 billion
Pooled investment vehicles (other than investment companies and BDCs)	18	$45.16 billion
Pension and profit sharing plans (not the participants or government plans)	343	$9.56 billion
Charitable organizations	465	$3.87 billion
State or municipal government entities (including government pension plans)	4	$2.62 billion
Corporations or other businesses not listed above	35	$488.3 million
Other	2	$375.0 million