New York · 4 people tracked
Also known as JEFFERIES INVESTMENT ADVISERS LLC · JEFFERIES RESEARCH SERVICES LLC · LEUCADIA ASSET MANAGEMENT LLC
Find your way into Jefferies
5,044 people in our graph share verified history with the Jefferies team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Jefferies is a New York-based financial services firm offering investment banking, wealth management, and related client services, including client portals and conference applications. Its homepage currently focuses on warning the public about fraudsters impersonating the firm through fake websites, apps, and social media accounts.
Source: firm website, verified Sep 1, 2026.
Team · 4 people
from curated
Founder mafia
The Jefferies mafia →22 people who came through Jefferies went on to found or lead other companies.
+ 10 more
What they invest in
from 7 of 7 portfolio companiesFintech ×4Biotech ×2Enterprise Software ×2Healthtech ×2AI & Machine Learning ×1Deep Tech ×1Digital Health ×1Medical Devices ×1
HQs:United States×5Saudi Arabia×1
Investments · 7 tracked
founders shown can be your intro pathBy year:2026 · 12025 · 22023 · 12021 · 15 dated
Navan is an AI-powered platform for corporate travel and expense management that combines booking, policy management, and real-time reporting for enterprise clients.
Enterprise SoftwareSaaSTravel & HospitalityPalo Alto, US
CohenTwigAriel Cohen(Founder)in
BoardOren Zeev(Director)Ilan Twig(Executive Officer, Director)
Co-investors01 AdvisorsAkkadian VenturesAlkeon InnovationAndreessen HorowitzBase PartnersElad Gil+11 more
OS Therapies (OST) is a clinical-stage cancer immunotherapy company developing treatments that activate the immune system to target HER2-expressing cancers, initially focusing on osteosarcoma in children and adults.
BiotechHealthtechGrasonville, US
Christopher P. Acevedo(Chief Financial Officer)inRobert G. Petit(Chief Medical Officer and Chief Scientific Officer)inGerald Commissiong(Chief Business Officer)inPaul Romness(Founder, Chairman, President and Chief Executive Officer)in
BoardJohn Ciccio(Director)Theodore F. Search(Director)
Co-investorsK20 Fund
Taysha Gene Therapies develops and commercializes gene therapies for monogenic diseases of the central nervous system, serving patients with rare and larger CNS conditions.
BiotechDeep TechDigital HealthHealthtechMedical DevicesTexas, US
R.A. Session II(Executive Officer, Director)inSean P. Nolan(Chief Executive Officer and Board Chairman)in
BoardPaul B. Manning(Director)in
Co-investorsGV (Google Ventures)BairdGoldman SachsPBM Capital
Aiera provides AI-enabled infrastructure that gives institutional research teams permissioned, entitlement-aware access to proprietary financial content such as broker research, expert insights, transcripts, filings, live earnings calls, and news through a single searchable environment.
AI & Machine LearningEnterprise SoftwareFintech
Co-investorsBank of AmericaDeutsche BankEvercoreHSBCUBSFlybridge Capital Partners+2 more
erad supplies capital to startups across the Middle East without requiring equity stakes, offering funding decisions based on business data integrations within two days.
FintechRiyadh, SA
Salem Abu-Hammour(Founder)inYoussef Said(Founder)inFaris Yaghmour(Founder)in
Co-investors500 GlobalFlucas VenturesJoa CapitalKhwarizmi VenturesKube VCNuwa Capital+5 more
InvestX provides access to private market investment opportunities for a broader range of investors beyond institutions.
FintechSector Agnostic
Marcus New(Founder and Chief Executive Officer)inDan Sanders(CEO, InvestX Markets LLC & Head of Private Markets)inDon Short(Head of Venture Equity & Chief Compliance Officer (Canada))in
Co-investorsSenaHill PartnersCanaccord Genuity GroupVirtu Financial
Parker provides banking services through a digital platform.
FintechNew York City, US
Milan Ray(Founder)inYacine Sibous(Founder)in
Co-investorsEthos VCY CombinatorValar Ventures Llc
Exits · 3
IPOs and acquisitions across the tracked portfolioNavanNASDAQ: NAVNOS TherapiesNYSE: OSTXTaysha Gene TherapiesNASDAQ: TSHA
Portfolio news
latest coverage across their companies
OS Therapies · stocktitan.net · Aug 21, 2026
Taysha Gene Therapies · stocktitan.net · Aug 11, 2026
Parker · marketbeat.com · Jul 18, 2026
Navan · calcalistech.com · Jul 7, 2026
erad · ffnews.com · Nov 27, 2025
Frequently asked questions
- What sectors does Jefferies focus on?
- Jefferies focuses on Crypto & Web3.
- Where is Jefferies located?
- Jefferies is headquartered in New York, US.
Images
Co-investors · 17
Lightspeed is a global venture capital firm that has spent over two decades backing innovative companies as an early and first investor.
Sequoia Capital is a venture capital firm that partners with founders to build technology companies.
.png)
General Catalyst is a venture capital firm operating as a partnership focused on company building and accelerating the growth of the businesses it backs.
True Ventures is a venture capital firm established in 2005 that focuses on early-stage technology companies, with operations based in Silicon Valley.
Canaan Partners is a venture capital firm with over 30 years of history, backing companies across technology and healthcare sectors through close, hands-on partnerships with founders.
Sapphire Ventures partners with expansion-stage enterprise software companies aiming to become category leaders.
Slow Ventures is a generalist early-stage venture capital firm founded in 2011, with offices in San Francisco, Boston, and New York, investing in the earliest rounds of companies across many sectors.
Cota Capital is an investment firm focused on founders building net-new enterprise technology, combining capital with operational expertise, industry insight, competitive intelligence, and a broad network.
75 & Sunny operates as both a venture fund and startup studio where Zillow co-founder Spencer Rascoff directly incubates companies like Queue while leveraging his media presence as a CNBC contributor and podcast host to give portfolio companies exposure that few small funds can match. The LA-based fund concentrates heavily on proptech and "future of living" investments while co-creating companies with unconventional capital structures like SPACs and fractional home-ownership models, drawing on Rascoff's experience navigating public markets.
Tenaya Capital is a venture capital firm that partners with entrepreneurs building enduring companies, focusing on growth-stage investments.
Wildcat Venture Partners is a venture capital firm that backs technology entrepreneurs aiming to create new market categories.
WestWave Capital is an early-stage venture capital firm founded by former entrepreneurs and experienced investors, focused on backing founders building and scaling technology companies.
▶5 more co-investors
National Grid PartnersIndie.vcGeneration Investment ManagementStarVest PartnersStartup Capital Ventures
Firms observed investing alongside Jefferies, from public investor directories. Shared companies are the overlap with Jefferies's recorded portfolio.
Similar investors
AirTree Ventures runs Pathfinders, a free four-week in-person program in Sydney for young builders (high-school graduates up to age 23) to work on a real product, access the AirTree team and founders, and build a peer network.
Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz, known for pioneering the platform model with a large team of operators supporting founders across stages.
Atomico is an international venture capital firm that invests in growth-stage technology companies across multiple geographies. The firm focuses on scaling disruptive technology businesses globally.
August Capital is a venture capital firm that invests in a small number of companies, providing hands-on support to entrepreneurs building their businesses.
.jpeg){kind=logo}
B Capital is a global investment firm backing early to late-stage technology innovators across technology, healthcare, and energy & resilience sectors.