The stock trading industry in the U.S. consists of various platforms, brokerages, and investor firms that facilitate the buying and selling of financial instruments, including stocks, bonds, and derivatives. Major players range from well-established financial institutions to innovative fintech startups, each offering an array of services designed to maximize individual and institutional trading experiences. With the integration of technology through mobile trading apps and algorithmic trading, the industry is set for continued growth, driven by an increasing familiarity with online trading and consumers seeking more personalized investment strategies. Sustainability and future-focused trading practices are the industry's next chapters.

This list showcases a mix of corporate, private equity, and venture capital investors headquartered in major U.S. cities like New York, San Francisco, and Chicago. Founded between 1812 and 2023, these firms operate in a range of sizes, from teams of 11 to over 10,000 employees. In 2024, they collectively counted more than 500 investments in exciting projects and companies in the stock trading sector. Their keen insight into the market positions them as key players in shaping the future of financial investment.

Top 18 Stock Trading Investors in the US

1. 500 Global

• Website: 500.co
• Type: Venture Capital
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 2010
• Headcount: 201-500
• Number of deals in 2024: 98
• LinkedIn: 500-startups

500 Global, founded in 2010 and based in San Francisco, California, is a venture capital firm and startup accelerator that specializes in investing in early-stage technology companies. The firm provides funding, mentorship, and resources to help founders scale their businesses globally. Notably, 500 Global has been involved in significant transactions within the stock trading context, such as their investments in Stockbit, an Indonesian stock investing app, where they participated in Series A, B, and C funding rounds totaling over $45 million. Additionally, they invested in Sarwa, a financial services platform, which raised $15 million in Series B and $8.4 million in Series A, showcasing their commitment to supporting innovative financial technology startups. This focus on companies that facilitate stock trading and investment positions 500 Global as a relevant player in the stock trading investor category.

2. Goldman Sachs

• Website: goldmansachs.com
• Type: Private Equity
• Headquarters: New York, New York, United States (USA)
• Founded year: 1998
• Headcount: 10001+
• Number of deals in 2024: 59
• LinkedIn: goldman-sachs

Goldman Sachs is an investment bank and financial services firm based in New York, New York, founded in 1998. With a workforce of over 10,000 employees, Goldman Sachs provides a wide range of services including investment banking, asset management, and wealth management. The firm serves a diverse clientele, including corporations, financial institutions, and individuals, helping them navigate complex financial challenges and achieve their financial goals. Notably, Goldman Sachs has been involved in several significant transactions in the stock trading context, such as acquiring a 20% stake in the National Stock Exchange of India in 2007 and participating in a post-IPO equity raise for BSE Ltd in 2025, which raised approximately $46 million. Additionally, they have engaged in funding rounds for companies like Nasdaq Private Market, which focuses on enhancing trading and settlement infrastructure. These activities highlight Goldman Sachs' active role in the stock trading industry.

3. HUB International

• Website: hubinternational.com
• Type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Founded year: 1998
• Headcount: 10001+
• Number of deals in 2024: 37
• LinkedIn: hub-international

HUB International Limited is a corporate investor based in Chicago, Illinois, founded in 1998. As a leading insurance brokerage, HUB provides a comprehensive range of insurance and risk management services to businesses, organizations, and individuals. Their offerings include business insurance, employee benefits, retirement services, and personal insurance, aimed at helping clients manage risks and protect their assets across various industries. In recent years, HUB has made significant strides in expanding its financial services through strategic acquisitions. Notably, they acquired WealthPlan Advisors in August 2022, a registered investment advisor managing over $2.3 billion in assets, which enhances their capabilities in retirement and wealth planning services. Other acquisitions, such as Redcliffe Financial Group and Perennial Pension & Wealth, further illustrate their commitment to integrating financial advisory services into their portfolio, positioning them as a multifaceted player in the financial services sector.

4. Tiger Global

• Website: tigerglobal.com
• Type: Venture Capital
• Headquarters: New York, New York, United States (USA)
• Founded year: 2001
• Headcount: 51-200
• Number of deals in 2024: 25
• LinkedIn: tiger-global-management

Tiger Global Management, LLC is an investment firm based in New York, specializing in both public and private equity investments. Founded in 2001, the firm manages around $50 billion and focuses on innovative companies leveraging technology. Notably, Tiger Global has made significant investments in the stock trading sector, including a $25 million Series B funding for Upstox, a leading retail broking firm in India, aimed at enhancing its product offerings and technology stack. Additionally, they participated in multiple funding rounds for Groww, a financial services platform, raising substantial amounts in Series D and E rounds. Their investment in Stake, a platform that facilitates stock trading, further underscores their active role in the stock trading industry. Tiger Global's clients include institutional investors and high-net-worth individuals seeking expert investment management and advisory services.

5. Deep Tech Fund (an Alumni Ventures Fund)

• Website: av.vc
• Type: Venture Capital
• Headquarters: Manchester, New Hampshire, United States (USA)
• Founded year: 2023
• Headcount: 51-200
• Number of deals in 2024: 258
• LinkedIn: deep-tech-fund-av-focused-fund

The Deep Tech Fund (an Alumni Ventures Fund) is a venture capital firm based in Manchester, New Hampshire, founded in 2023. It provides accredited investors and institutions with access to professionally-managed, diversified venture portfolios, leveraging a network of over 10,000 investors to connect them with high-quality investment opportunities in the startup ecosystem. The fund has been involved in several notable transactions relevant to the stock trading industry, including investments in Alpaca, a commission-free trading platform, and Quiver Quantitative, which offers investment research tools for retail investors. Additionally, they participated in funding for the Long-Term Stock Exchange, which aims to innovate the stock trading landscape. These investments highlight the fund's engagement with companies that are integral to the stock trading sector.

6. Citi

• Website: citigroup.com
• Type: Venture Capital
• Headquarters: New York, New York, United States (USA)
• Founded year: 1812
• Headcount: 10001+
• Number of deals in 2024: 107
• LinkedIn: citi

Citigroup Inc., commonly known as Citi, is a prominent financial services company based in New York, New York, founded in 1812. With a workforce of over 10,000 employees, Citi provides a comprehensive range of banking and investment services to both individuals and businesses. The firm operates across various sectors, including commercial banking, investment banking, and wealth management, which are essential for managing finances and investments effectively. In 2024, Citi has been involved in 107 investments, showcasing its active role in the financial market. Notably, Citi participated in the Series B funding round for BondbloX, a digital exchange for trading bonds, which highlights its commitment to enhancing trading infrastructure. Additionally, Citi's involvement in transactions like the funding of FMX and the National Stock Exchange further emphasizes its engagement in the trading and investment sectors.

7. Accel

• Website: accel.com
• Type: Venture Capital
• Headquarters: Palo Alto, California, United States (USA)
• Founded year: 1983
• Headcount: 51-200
• Number of deals in 2024: 101
• LinkedIn: accel-vc

Accel is a venture capital firm founded in 1983, based in Palo Alto, California, with additional offices in San Francisco, London, India, and China. The firm specializes in investing in startups and early-stage companies, primarily in the technology sector. In 2024 alone, Accel has made 101 investments, showcasing its active role in the venture capital landscape. Notably, Accel has participated in significant funding rounds for companies like Trade Republic, a leading FinTech that has raised substantial capital to enhance its stock trading platform, and Public.com, which focuses on democratizing stock trading. These investments highlight Accel's engagement in the stock trading industry, as they support companies that provide trading services and technology to consumers.

8. Blackstone

• Website: blackstone.com
• Type: Private Equity
• Headquarters: New York, New York, United States (USA)
• Founded year: 1985
• Headcount: 1001-5000
• Number of deals in 2024: 57
• LinkedIn: blackstonegroup

Blackstone Inc. is an investment management firm founded in 1985 and headquartered in New York, specializing in alternative investments. With a workforce of 1001-5000 employees, Blackstone has made 57 investments in 2024 alone, showcasing its active role in the investment landscape. The firm offers a diverse range of services, including private equity, real estate, and credit solutions, catering to both institutional and individual investors. Notably, Blackstone has been involved in significant transactions that highlight its engagement in the financial sector, such as the acquisition of First Eagle Investment Management in 2015, which enhances its investment management capabilities. Additionally, their investment in Beacon Platform, a cloud-based enterprise financial software company, indicates their interest in technology that supports financial trading and investment processes. Furthermore, the acquisition of Harbourmaster Capital positions Blackstone as a major player in leveraged loans, further integrating them into the financial markets. These transactions reflect Blackstone's commitment to building strong businesses and delivering lasting value, making them a relevant entity in the stock trading context.

9. Morgan Stanley

• Website: morganstanley.com
• Type: Venture Capital
• Headquarters: New York, New York, United States (USA)
• Founded year: 1986
• Headcount: 10001+
• Number of deals in 2024: 79
• LinkedIn: morgan-stanley

Morgan Stanley is an investment bank and financial services firm founded in 1986, headquartered in New York, New York. With a workforce of over 10,000 employees, the firm provides a wide range of services including wealth management, investment banking, and capital markets. Morgan Stanley serves a diverse clientele, including individuals, families, corporations, and governments, helping them manage and grow their financial assets. The firm has a global presence and leverages its expertise to offer tailored financial solutions. Notably, Morgan Stanley acquired E*TRADE in February 2020 for $13 billion, significantly enhancing its capabilities in the stock trading space. Additionally, their participation in funding rounds such as the Series B for Securitize and their investment in FMX further demonstrate their active role in the financial markets, particularly in areas that intersect with stock trading and investment technology.

10. Founders Fund

• Website: foundersfund.com
• Type: Venture Capital
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 2005
• Headcount: 11-50
• Number of deals in 2024: 44
• LinkedIn: the-founders-fund

Founders Fund is a venture capital firm based in San Francisco, California, founded in 2005. The firm specializes in investing in innovative technology companies across various sectors, including aerospace and software development. They provide funding and strategic support to startups, helping them grow and scale their operations. Notable investments include high-impact companies like SpaceX and Palantir. In the context of stock trading, Founders Fund has participated in significant funding rounds for companies like Trade Republic, which raised $900 million in Series C financing, and $75 million in Series B financing, positioning it as one of the highest valued private FinTechs in Europe. Additionally, they invested in the Long-Term Stock Exchange, which aims to create a more sustainable stock trading environment. These transactions highlight Founders Fund's engagement with the stock trading industry, making them a relevant player in this space.

11. QED Investors

• Website: qedinvestors.com
• Type: Venture Capital
• Headquarters: Alexandria, Virginia, United States (USA)
• Founded year: 2007
• Headcount: 11-50
• Number of deals in 2024: 37
• LinkedIn: qed-investors

QED Investors is a venture capital firm based in Alexandria, Virginia, founded in 2007. The firm specializes in investing in FinTech companies, aiming to disrupt traditional financial services and insurance markets. With 37 investments in 2024 alone, QED has demonstrated a strong commitment to innovative financial solutions. Notable transactions include leading a $25 million Series A funding round for CommonStock, a platform that allows users to engage in stock trading and investment discussions. They also participated in a $6.5 million Pre-Series A round for Mudrex, a crypto investing platform, highlighting their interest in modern investment technologies. Their investment in Warren Investimentos, a financial services company, further illustrates their focus on expanding innovative financial services, which may include stock trading functionalities.

12. Kkr

• Website: kkr.com
• Type: Private Equity
• Headquarters: New York, New York, United States (USA)
• Founded year: 1976
• Headcount: 1001-5000
• Number of deals in 2024: 74
• LinkedIn: kkr

KKR & Co. Inc. is a leading investment firm based in New York, specializing in private equity, credit, infrastructure, and real estate. Founded in 1976, KKR has established itself as a global player in asset management, providing solutions to institutional investors and individual clients. In 2024 alone, KKR has made 74 investments, showcasing their active role in the investment landscape. Notably, KKR has been involved in significant transactions such as the acquisition of Janney Montgomery Scott, a financial services firm, which indicates their interest in expanding their footprint in the financial sector. Additionally, their acquisition of Prisma Capital Partners, which manages hedge fund solutions, highlights their engagement in the public markets and stock trading. KKR's investment in Anchorage Digital, a fintech company focused on crypto solutions, further demonstrates their commitment to innovative financial technologies. These transactions reflect KKR's diverse investment strategy and their relevance in the stock trading context.

13. Citibank N.A. (California)

• Website: citi.com
• Type: Venture Capital
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 1812
• Headcount: 10001+
• Number of deals in 2024: 26
• LinkedIn: citibank-n.a.-california-

Citibank N.A. (California) is a prominent financial services company founded in 1812, headquartered in San Francisco, California. As a venture capital investor, Citi Ventures has made significant investments in various sectors, including financial technology. Notably, they participated in the funding rounds for TradeIT, which raised $8 million in seed funding in 2015 and an additional $4 million in 2017, both aimed at enhancing trading technology. In 2023, Citi Ventures also led a Series A financing round for Unlimited, which focuses on developing low-cost alternative strategy-tracking ETFs. These transactions highlight Citi's active role in the stock trading ecosystem, making them a relevant player in this space.

14. Tribe Capital

• Website: tribecap.co
• Type: Venture Capital
• Headquarters: Menlo Park, California, United States (USA)
• Founded year: 2018
• Headcount: 11-50
• Number of deals in 2024: 21
• LinkedIn: tribe-capital-partners

Tribe Capital is a venture capital firm founded in 2018 and based in Menlo Park, California. The firm specializes in investing in technology companies, leveraging AI and data science to identify and support startups in achieving product-market fit. In 2021, Tribe Capital led a $50 million Series B funding round for Alpaca, a stock brokerage platform that has experienced significant growth in brokerage accounts and plans to expand into cryptocurrency trading. Additionally, they have been involved with Kraken, a cryptocurrency exchange, through various funding rounds, indicating their interest in financial technology and trading platforms. These transactions highlight Tribe Capital's engagement in sectors that intersect with stock trading, making them a relevant player in this industry.

15. Galaxy

• Website: galaxy.com
• Type: Venture Capital
• Headquarters: New York, New York, United States (USA)
• Founded year: 2018
• Headcount: 201-500
• Number of deals in 2024: 19
• LinkedIn: galaxydigital

Galaxy is a financial services company based in New York, specializing in digital assets and blockchain technology. Founded in 2018, Galaxy offers a range of services including trading, asset management, and investment banking tailored for institutional investors and organizations. They have been actively involved in the digital asset economy, providing innovative solutions and expert advice. Notably, Galaxy participated in the funding of CoinRoutes, a trading platform for digital assets, which raised $16 million in a Series B financing round. Additionally, they led a $20 million Series A funding for Skolem Technologies, a company focused on expanding the DeFi market. These transactions highlight Galaxy's commitment to advancing trading capabilities within the digital asset space, making them a significant player in the evolving financial landscape.

16. Wells Fargo

• Website: wellsfargo.com
• Type: Corporate
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 1852
• Headcount: 10001+
• Number of deals in 2024: 42
• LinkedIn: wellsfargo

Wells Fargo & Company, founded in 1852 and based in San Francisco, California, is a prominent financial services company that offers a comprehensive range of banking products, including checking and savings accounts, loans, and investment management services. With over 10,000 employees, Wells Fargo serves both individual consumers and businesses, emphasizing customer service and community engagement. In 2024, Wells Fargo has made 42 investments, showcasing its active role in the financial sector. Notably, they participated in the Series B financing round for Nasdaq Private Market, which aims to enhance trading, settlement, and data infrastructure in private markets. Additionally, their involvement in funding rounds for companies like Forge Global and FMX highlights their strategic interest in innovative financial solutions and trading platforms. These transactions reflect Wells Fargo's commitment to advancing the stock trading landscape while providing essential financial services.

17. General Atlantic

• Website: generalatlantic.com
• Type: Private Equity
• Headquarters: New York, New York, United States (USA)
• Founded year: 1980
• Headcount: 501-1000
• Number of deals in 2024: 32
• LinkedIn: general-atlantic

General Atlantic is a private equity investment firm based in New York, specializing in growth equity. Founded in 1980, the firm provides capital and strategic support to entrepreneurs and growth companies across various sectors, including technology and healthcare. Notably, General Atlantic has made significant investments in the stock trading context, such as acquiring a stake in the National Stock Exchange of India, which is a key player in the stock trading industry. Additionally, they have invested in Futu Holdings, a technology-driven brokerage firm, and Webull, a commission-free trading platform. These transactions highlight General Atlantic's commitment to enhancing the growth trajectories of companies within the stock trading sector, leveraging their global network and expertise to support innovation and expansion in this field.

18. Framework Ventures

• Website: framework.ventures
• Type: Venture Capital
• Headquarters: San Francisco, California, United States (USA)
• Founded year: 2019
• Headcount: 11-50
• Number of deals in 2024: 28
• LinkedIn: framework-ventures

Framework Ventures is a venture capital firm based in San Francisco, California, founded in 2019. The firm specializes in blockchain technology and invests in startups to develop token-based networks, providing consulting services in cryptoeconomics and governance. They have been actively involved in the blockchain sector, with notable investments in trading platforms. For instance, they participated in the seed funding for PowerTrade, a mobile bitcoin options trading platform, and co-led the funding round for Lyra Finance, which focuses on layer 2 options trading on Ethereum. Other significant investments include Hubble Exchange and Synthetix, both of which are involved in trading protocols. These transactions highlight Framework Ventures' commitment to supporting innovative trading solutions within the blockchain ecosystem.

Stock Trading Insights: Key Investors in the US

Investor	Headquarter	Size	Founded	Deals 2024
500 Global	San Francisco, California, United States (USA)	201-500	2010	98
Goldman Sachs	New York, New York, United States (USA)	10001+	1998	59
HUB International	Chicago, Illinois, United States (USA)	10001+	1998	37
Tiger Global	New York, New York, United States (USA)	51-200	2001	25
Deep Tech Fund (an Alumni Ventures Fund)	Manchester, New Hampshire, United States (USA)	51-200	2023	258
Citi	New York, New York, United States (USA)	10001+	1812	107
Accel	Palo Alto, California, United States (USA)	51-200	1983	101
Blackstone	New York, New York, United States (USA)	1001-5000	1985	57
Morgan Stanley	New York, New York, United States (USA)	10001+	1986	79
Founders Fund	San Francisco, California, United States (USA)	11-50	2005	44
QED Investors	Alexandria, Virginia, United States (USA)	11-50	2007	37
Kkr	New York, New York, United States (USA)	1001-5000	1976	74
Citibank N.A. (California)	San Francisco, California, United States (USA)	10001+	1812	26
Tribe Capital	Menlo Park, California, United States (USA)	11-50	2018	21
Galaxy	New York, New York, United States (USA)	201-500	2018	19
Wells Fargo	San Francisco, California, United States (USA)	10001+	1852	42
General Atlantic	New York, New York, United States (USA)	501-1000	1980	32
Framework Ventures	San Francisco, California, United States (USA)	11-50	2019	28

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