Jefferies Research Services LLC

Registered investment adviser · New York, NY · CRD #292142

Form ADV data as of 2026-09-01

Regulatory assets

Total accounts

Employees

248

Disclosure events

Firm details

Website: https://www.jefferies.com
Telephone: 212-284-2300
SEC file number: 801-112728
Most recent Form ADV filing: 2026-02-27
SEC record: View this firm on the SEC's IAPD site

Disciplinary disclosures

This firm answered No to every Item 11 disciplinary question on its most recent Form ADV filing.

Assets and accounts

Provides continuous and regular supervisory or management services	No
Discretionary regulatory assets under management	$0
Non-discretionary regulatory assets under management	$0
Total regulatory assets under management	$0
Discretionary accounts	0
Non-discretionary accounts	0
Total accounts	0

People

Total employees (excluding clerical)	248
Employees performing investment advisory functions (including research)	221
Employees who are registered representatives of a broker-dealer	241
Employees registered as investment adviser representatives with a state	4
Employees registered as IARs for another investment adviser	4
Employees who are licensed insurance agents	0
Firms or persons who solicit advisory clients on the firm's behalf	0

Custody

Has custody of client cash or bank accounts	No
Has custody of client securities	No
A related person has custody of client cash or bank accounts	No
A related person has custody of client securities	No
Client funds and securities held in a related person's custody	$0
Clients for whom a related person has custody	0
The firm acts as a qualified custodian	No
A related person acts as a qualified custodian	No

How the firm is compensated

Subscription fees (for a newsletter or periodical)Fixed fees (other than subscription fees)Other

Advisory services offered

Other

Affiliated related persons

Broker-dealer, municipal securities dealer, or government securities broker or dealerOther investment adviser (including financial planners)Registered security-based swap dealerCommodity pool operator or commodity trading advisorFutures commission merchantInsurance company or agencyReal estate broker or dealerSponsor 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 securities from or sells securities to advisory clients (principal transactions)
Buys or sells for itself securities it also recommends to clients
Recommends securities in which it has another proprietary interest
Recommends securities for which it serves as underwriter or general partner
Recommends securities in which it has another sales interest
Recommends brokers or dealers to clients
Brokers or dealers recommended under 8.E. are related persons