| # | Company | Employees |
|---|---|---|
| 1 |
Interactive Brokersinteractivebrokers.com
Provides automated trade execution and custody for diverse financial instruments across global markets, offering advanced tools and research at low cost. |
3,506 |
| 2 |
W. R. Berkley Corporationberkley.com
Holding company for insurance and reinsurance businesses, specializing in niche markets globally with property casualty coverage in the United States. |
2,624 |
| 3 |
AQR Capital Managementaqr.com
Global investment management firm combining economics, behavioral finance, data, and technology to optimize client portfolio performance worldwide. |
957 |
| 4 |
Silver Point Capital, L.P.silverpointcapital.com
Leading global credit investing firm with a dedicated team, overseeing billions in assets across direct lending, liquid performing credit, and special situations investment strategies. |
441 |
| 5 |
Stone Point Capitalstonepoint.com
Investment firm in Greenwich, CT with $45B assets under management targeting financial services industry investments through private equity, credit funds, and financing solutions |
254 |
| 6 |
Berkley Re (a Berkley Company)berkleyre.com
Global reinsurance provider offering treaty and facultative reinsurance solutions to insurance companies and self-insured businesses worldwide through local experts in key regions |
183 |
| 7 |
Edgewood Management LLCedgewood.com
Management of large cap growth portfolios focusing on high-quality companies with strong earnings, balance sheets, and long-term investment horizons. |
80 |
| 8 |
Paloma Partners Management Companypaloma.com
A multi-strategy investment adviser focusing on generating long-term, low correlated returns by partnering with innovative investment talent globally |
77 |
| 9 |
Weeden & Co.pipersandler.com
A trusted institutional trading firm since 1922, offering premier execution services with a focus on client relationships, senior management involvement, and a partnership-based culture |
75 |
| 10 |
Axiom Investorsaxiominvestors.com
Employee-owned investment management firm with a dynamic growth approach based in Greenwich, CT, specializing in global, international, and emerging market equity portfolios |
67 |
| 11 |
Leverage Shares EUleverageshares.com
A European leader in leveraged and inverse exchange traded products, offering magnified exposure for experienced traders through physical replication Capital at risk |
53 |
| 12 |
Chatsworth Securities LLCchatsworthgroup.com
Investment banking firm specializing in advisory services, private capital raising, M&A, IPOs, and equity offerings across high-growth industries. |
48 |
| 13 |
Southfield Capitalsouthfieldcapital.com
Private equity firm investing in growing North American companies in the lower middle market with $4-15 million EBITDA, strong leadership, and attractive growth and profitability trends |
38 |
| 14 |
ParaFi Capitalparafi.com
Alternative asset management firm specializing in hedge fund and venture capital strategies within the digital asset ecosystem Trusted by global institutions since 2018 |
30 |
| 15 |
Starwood Energy Groupstarwoodenergygroup.com
Energy infrastructure investment firm specializing in natural gas and renewable power generation, transmission assets, managing over $2 billion in equity commitments |
27 |
| 16 |
CenterBook Partners LPcenterbook.com
A multinational firm specializing in alternative investments on a global scale |
25 |
| 17 | 24 | |
| 18 |
Plainfield Asset Managementpfam.com
An investment management firm based in Connecticut, managing capital for institutions and high net worth individuals in the US and abroad |
24 |
| 19 |
QFS Asset Management, L.P.qfsfunds.com
A leading asset and risk management firm providing superior non-correlated returns across major asset classes, with expertise in customized solutions |
16 |
| 20 |
Good Hill Partners LPgoodhillpartners.com
Private investment firm specializing in structured products and fixed income markets, managing capital for clients with diverse return and liquidity profiles Committed to transparency and fiduciary standards |
15 |
| 21 |
10T Holdings10tfund.com
Investing in growth stage private companies in the digital asset ecosystem, focusing on blue-chip companies that will shape the future |
14 |
| 22 |
Cardinal Capital Management, L.L.C.cardcap.com
An established investment firm specializing in small and mid-cap value equity investing, focused on producing high-quality results using a free cash flow driven strategy |
13 |
| 23 |
Endeavour Capital Advisors Inc.endcap.com
Boutique asset management firm in Greenwich, CT investing in financial services sector through public and private equities |
11 |
| 24 |
Whitehaven Asset Management, LPwhitehavenlp.com
This company offers municipal investment advisory and portfolio management services to its clients |
10 |
| 25 |
Deccan Value Investors L.P.deccanvalue.com
This company offers investment management and advisory services to top endowments, foundations, and family offices worldwide |
8 |
| 26 |
BLKBRD Asset Management, LPblkbrdlp.com
Specializing in systematic investment strategies, our company enhances alpha through quantitative research and advanced technology, striving for optimized risk-adjusted returns |
8 |
| 27 |
Engle Capital Management, LPenglecap.com
A New York-based investment firm focusing on long and short positions in global equities through fundamental research to generate high returns and preserve capital |
6 |
| 28 |
Vollert Capitalvollertcapital.com
A premier investment management firm providing customized solutions with experienced professionals focusing on research, analysis, and risk management strategies |
5 |
| 29 |
Titanite Investment Management LPtitanitecapital.com
Investment firm targeting transformative biotech and medtech advancements, focusing on small and midcap US equity investments |
4 |
| 30 |
One Three One Partners
An investment firm focusing on generating risk-adjusted returns by investing in technology and consumer sectors through operational growth and prudent capital allocation |
1 |
| 31 |
Phillimore Investments LPphillimore.com
Global macro asset management firm headquartered in Greenwich, Connecticut with a focus on investment strategies for clients worldwide |
1 |
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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