Manhattan financial district skyline at dusk with modern glass towers reflecting golden light
Brownstone Investment Group

Built on relationships.
Powered by technology.

A New York-based institutional trading firm delivering sophisticated market access across fixed income, equities, structured products, and ETFs since 1998.

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New York City financial district perspective
Est. 1998

A different kind of trading firm.

Brownstone Investment Group is a New York-based institutional brokerage and technology-driven liquidity provider founded in 1998. Operating with a flat hierarchy where senior partners sit directly on the desk, we blend market instinct with technology to deliver secondary liquidity for broker-dealers, institutions, registered investment advisers, and asset managers.

1998
Founded
NYC
HQ
SEC
Registered
4+
Markets

Nearly three decades on the desk.

1998
Douglas Lowey and Barret Naylor found Brownstone Investment Group in New York, after building the high-yield dealer desk at Bear Stearns & Co.
2002
Michelle Halla Hunter joins as Chief Compliance Officer, establishing Brownstone's industry-leading regulatory framework.
2004
Jon Sablowsky joins the firm to lead and expand its fixed income trading operations and firmwide trading risk management.
2011
Brownstone is named Dealer of the Year by BondDesk across both the high yield and investment grade corporate markets.
2015
Anthony McDevitt joins as Partner, launching the structured products desk and expanding institutional sales distribution.
2020
Brownstone launches its proprietary unified technology platform, integrating AI-driven analytics and algorithmic quoting across all desks.
2024
David Dinner leads the next-generation technology buildout, integrating advanced AI, real-time data pipelines, and multi-channel electronic execution.
Today
Over 26 years of continuous operation. SEC-registered, FINRA-regulated, trading across high yield, investment grade, structured products, equities, and ETFs.
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Accessing markets through relationships, technology, and execution.

Live Execution Desks
Trading desk analytics displaying high yield credit charts across multiple screens
High Yield Corporates
Lower Manhattan skyline at night representing the stability of investment grade markets
Investment Grade Yield Curve
Abstract data light trails representing structured product complexity
Structured Performance
Trader analyzing ETF basket liquidity across candlestick charts
ETF Basket Liquidity

High Yield Corporate Bonds

Our core franchise since inception. Deep historical expertise in cash high-yield debt, special situations, and distressed credits with minimal market footprint.

  • Cash High-Yield Debt
  • Distressed & Special Situations
  • Convertibles & Preferred Securities
  • Leveraged Loans & Syndicated Credit

Investment Grade Corporates

Secondary liquidity across broad-market IG credit via Bloomberg ALLQ, Tradeweb, MarketAxess, and direct FIX protocol connectivity.

  • Broad-Market IG Credit
  • Municipal Bonds — Tax-Exempt & Taxable
  • Government & Agency Securities
  • Electronic & Voice Execution

Structured Products

Led by Partner Anthony McDevitt, comprehensive trading across the full range of securitized assets for institutional clients.

  • Mortgage-Backed Securities (MBS)
  • Asset-Backed Securities (ABS)
  • Collateralized Loan Obligations (CLOs)
  • Commercial Mortgage-Backed Securities

Equities & ETFs

Market-making expertise with advanced electronic trading — ETF execution, underlying basket pricing, block execution, and cash equities.

  • ETF Market Making
  • Block Execution & Basket Pricing
  • Cash Equities Trading
  • Cross-Asset Electronic Execution

Technology that expands human bandwidth.

In-House Engineering
Abstract data light trails representing Brownstone's unified technology layer
One Unified Layer

Technology is designed to amplify human judgment — never replace it.

100+Data Sources
Real-TimeExecution
In-HouseEngineering

Artificial Intelligence

Real-time data ingestion, sentiment analysis, and price discovery — with comprehensive human oversight in every decision loop.

Data Infrastructure

Proprietary pipelines aggregating market data from hundreds of sources — powering portfolio analytics and liquidity scoring.

Connectivity

Seamless integration across every major communication and execution platform our counterparties already use.

Connected Platforms
BloombergTradewebMarketAxessFIX ProtocolExcel Add-InsWeb PortalATSIn-House Systems BloombergTradewebMarketAxessFIX ProtocolExcel Add-InsWeb PortalATSIn-House Systems

What Brownstone believes.

Ethics background
01

Ethics

Integrity is the foundation of everything we do. We hold ourselves to the highest ethical standards in every interaction, every trade, and every relationship we build.

Mentorship background
02

Mentorship

We invest deeply in our people. Our mentorship culture ensures knowledge and expertise are shared across generations of Brownstone professionals.

Collaboration background
03

Collaboration

Senior leadership sits on the desk alongside trading, technology, and operations. Ideas move freely across every asset class and function.

Philanthropy background
04

Philanthropy

Giving back runs through the firm's culture — the team shows up for charitable causes and steps in for others in times of need.

Led by experience. Driven by vision.

DL
Douglas Lowey
Founding Principal, President & CEO

Oversees Brownstone's Capital Strategies Group, investing proprietary capital for the firm and its investors. Prior to founding Brownstone in 1998, he ran the high-yield dealer trading desk at Bear Stearns & Co. B.A., Political Science, Duke University.

FI
Fixed Income Trading
Senior Trading Leadership

Oversees Brownstone's fixed income trading operations, built on a career spanning senior high-yield trading roles across Wall Street's leading desks since 2004.

CS
Capital Strategies & Structured Products
Corporate Trading Desk

Invests proprietary capital for the firm and its investors, working alongside the structured products and corporate bond trading franchise.

In memory of Barret Naylor (1962–2019), Co-Founder of Brownstone Investment Group, whose vision, integrity, and passion for markets remain the heart and soul of our firm.

Let's Connect.

Whether you seek institutional market access, quantitative solutions, or partner representation — reach out to our team.

Headquarters 505 Fifth Avenue, 10th Floor
New York, NY 10017
Telephone (212) 905-0550
Key Contact Emails General: info@brownstone.com
Careers: careers@brownstone.com
Regulatory Declarations SEC Registered Broker-Dealer & Investment Adviser
Member FINRA / NYSE / MSRB / NASDAQ / SIPC
CRD #43884 | SEC #8-50460