Equity Trading

Cornerstone Macro (CSM) is a FINRA-registered broker-dealer, offering agency-only trading execution services to institutional investors including: mutual funds, hedge funds, pension funds, and money managers.

As a non-market making execution desk for one of Wall Street’s premier macro research providers, counterparties can have confidence that their orders are handled with no conflicts.

In addition, our three traders, with a combined 48 years of experience, use best-in-class trading tools to provide clients with best execution on US and Canadian Exchanges.


Brian F. Knapp

Brian Byrne

William Reilly

Stephen Chmil

BrianKnappHead Of Equity Trading
Office: 646-517-1310

Brian F. Knapp joined Cornerstone Macro as the firm’s Head of Equity Trading in April 2014. He graduated from the United States Military Academy in 1994 with a Bachelor of Science in Civil Engineering and a Minor in Mathematics. During Brian’s five years of service in the United States Field Artillery, U.S. Army, he earned his MBA from the University of Phoenix in 1998. After completing his military service in 1999, he joined Solomon Smith Barney’s Associate Training Program, which gave him broad exposure across all areas of Equities and Fixed Income. Brian was selected to join the firm’s Equity Listed Trading desk and in 2004 was promoted to Senior Equity Trader to co-manage the Energy pad. In 2006, he joined JP Morgan responsible for trading and capital commitment of domestic Energy and Utility related equities (including MLP’s, midstream, coal, and tankers). Brian left JPM in 2009 to join Susquehanna International Group’s (SIG) Equity Trading desk focusing on Energy and Industrial Super Cyclical U.S. Sectors. He was promoted to Head Trader in the summer of 2012 to manage seven senior traders, and responsible for overseeing all daily operations of the SIG trading desk.

BrianBynreEquity Trading
Office: 646-517-1311

Brian Byrne graduated from Trinity College in 1998, with a double Bachelor of Arts in Economics and Computer Science. He began his career as an Equity Trader with Boston-based hedge fund Navigator Asset Management. Brian traded individual equities, derivatives, futures, and fixed income products. In 2002, he joined Miller Tabak & Co., LLC’s Boston office as a hybrid Institutional Sales Trader and Trader. There, he covered hedge funds and mutual funds, while trading equities and listed options. From 2006 to 2008, Brian was tasked to improve business on the Program/Algorithmic & Electronic Trading desks, in the New York office. In 2008, Brian was promoted to Managing Director and Head of Equity Trading, managing 8 traders and support personnel, with responsibilities ranging from execution to operations.

billyreillyEquity Trading
Office: 646-517-1312

William “Billy” Reilly graduated from Fairfield University in 1992, and joined Smith Barney, spending five years as an equity trader before the firm’s acquisition by Citigroup. Billy went on to trade multiple sectors at Citi including Financials, REITs, Technology, and Consumer/Retailers, over the next 10 years. Billy joined Weeden & Co. in 2008 as a generalist trader, and after two years transitioned into a salestrader role. He was instrumental in developing and servicing mutual funds, hedge funds, and pension funds. Most recently Billy was a salestrader at Concept Capital, and acted as an outsourced trader for several hedge funds with over $1 billion of assets under management. He was also a liaison to Concept’s prime brokerage division, capitalizing on his vast array of contacts.

SteveChmilEquity Trading
Office: 646-517-1313

Stephen Chmil joined Cornerstone Macro in June 2014 as a Sales Assistant and in the spring 2015 migrated over the equity trading desk. During the summer of 2013, Stephen worked as a Capital Markets Summer Analyst at Shellpoint Partners assisting with the company’s first RMBS deal brought to market. Stephen graduated from Brown University in 2014 with a BA in Economics. While at Brown, Stephen was a member of the lacrosse team where he earned the Vincent Marinelli Award in 2010, given to the most valuable freshman. Stephen also attended Chaminade High School, earning honor roll status all four years while also playing lacrosse and serving as a captain on the football team.