Welcome to Rosenthal Capital Management, LLC

“We are always mining for edge. That’s why we continually enhance our computer technology and maintain a constant quest to increase our accuracy rate…”

— Bret Rosenthal


Employ proprietary institutional-quality investment algorithms to preserve capital while still capturing the upside.


Algorithms are the edge in today’s investing landscape. For the past five years we’ve put in the time, resources and effort to build dynamic volatility enhanced algorithms so that individual investors can benefit from a system that garners equal to or greater than “buy & hope” strategies with less draw.


We enjoy working one-on-one with clients. During the 80s-00s in New York City we built the largest private client equity business at Lehman Bros and Prudential (Wachovia/Wells Fargo) by bringing institutional information to individual investors.

At the time, powerful proprietary fundamental information was the key edge on Wall St. We met with an average of three (3) CEOs/management teams per week to gather information about companies in which we were interested in investing. We then immediately shared this informative edge with our clients.

Success led us to Florida where we launched a family office managing our own family assets plus those of some of our favorite New York City relationships.

Now, we are opening our doors again and accepting new clients. Why? Because we see the same opportunity to level the playing field between institutional and individual access to valuable information.

Institutions have access to investing algorithms and platforms that are not made available to individual investors. We enjoy providing the cudgel individuals need to survive, which is why we’re sharing our proprietary technology and algorithmic information.


We have each individually been investing in financial instruments for 30+ years. Over this extended period of time we have built up a treasure trove of knowledge. We’ve employed all manner of equity trading and investing approaches from traditional long-term investing strategies to stock market day-trading activities. This experience helped us develop our lucrative brand of capital management. [Meet the Rosenthal Capital Management crew.]


Our investing platform is a top-down approach and works as follows…


Employ our volatility specific Long-only intermediate-term Algorithms.

We apply these to each of the Big Three indices and will be investing in the following ETFs:

◊ S&P500 (SPY)  ◊  NASD100 (QQQ)  ◊  Russel SmallCap600 (IWM)


Deploy our volatility specific intra-day Hedging Algorithms.

We apply these strategies on the Big Three as needed to protect principal and reduce draw even further.


Once direction has been determined by the Big Three we look to position group ETFs.

We choose the groups our fundamental research department feels are most relevant to an investor’s portfolio.

Our algorithms (specifically designed for each group ETF) then direct our investment dollars.


We now know market direction and Group strength so we begin to deploy capital.

We place assets into individual equities based on fundamental information gathered by our research department.


Important: Unlike other investment advisors a significant portion of our capital under management  is our own. Everything you will see, read and watch on this web site impacts our personal capital directly. Investing is not a game to us nor a hobby but instead a passion and a war. For those who are interested (and who we feel are qualified to join us) we offer partnership access to an individual managed account through our affiliation with Interactive Brokers.

Meet the Crew

& join us -- we're family, literally (three of us, anyway)!
Bret Rosenthal

Bret Rosenthal

Principal, Head Trader

Bret began his career in the late 1980’s in New York City with Lehman Brothers and moved on to Prudential Securities/Wachovia. During this time he mentored under the watchful eye of his father, Gary Rosenthal, with whom he still works today. The Rosenthal Group managed one of the most successful private client businesses in the country at all three firms, the history of which was chronicled in R.J. Shook’s book, The Winner’s Circle. Bret’s stock trading approach was highlighted in Steve Cawiezell’s book, Expert Trading Systems: Successful Traders Share Their Secrets. 

Bret began building stock trading systems in the late 1990’s. In 2001 he implemented his first successful algorithmic system throughout the Rosenthal Group’s client structure: P.A.C.E. (Proprietary Analyses and Computer Enhancement). While the intervening years have seen the acronym change and the employed tools be exceedingly enhanced, the core of that system lives on in the strategies and systems of today’s Rosenthal Capital Management.

In 2005, Bret and Gary started their own firm, Rosenthal Capital Management, LLC, located in Jupiter, Florida (Palm Beach County).

Listen to Bret describe his professional day trading, swing trading and stock market investing history and current approach in this interview by Steven Cawiezell, host of the Secrets of Successful Trading Systems Podcast.

Gary Rosenthal

Gary Rosenthal

Principal, Head of Fundamental Research

Gary Rosenthal is a managing member and Principal of Rosenthal Capital Management, LLC, and, as such, is responsible for developing investment themes and the overall strategic direction of the Fund. Prior to starting Rosenthal Capital Management, LLC, Mr. Rosenthal served as Director of Investments at Wachovia Securities, plus Senior Vice President of Investments at Prudential Securities. In both cases, Mr. Rosenthal constructed and monitored investment portfolios for high net worth individuals, trusts, pension plans and foundations.

From 2003 – 2005 Mr. Rosenthal sat on the Directors’ Council at Wachovia Securities. Prior to that time he spent nine years on the Chairman’s Council at Prudential Securities. His success during those years was highlighted in the book The Winners Circle (2002). Mr. Rosenthal joined Lehman Brothers in 1975 and spent 21 years in a variety of functions including institutional salesman, head of the institutional sales department, and financial consultant for high net worth individuals, trusts, pension plans and foundations. In 1966, Mr. Rosenthal began his career on Wall Street as a security analyst at the United States Trust Company after graduating with an MBA from Columbia Graduate School of Business.

Bill Jacobs

Bill Jacobs

Trade System Developer / Futures & Equities Trader

Bill began his career as a market maker for Heat and Gas Cracks at the NYMEX. He has been developing algorithmic and systematic trading systems for futures, bond and equity markets since the late 1990’s.

Michele Rosenthal

Michele Rosenthal

CCO, Director of Corporate Communications

Michele possesses over 25 years of experience in public relations and marketing from a wide array of industries including finance, publishing, education, entertainment and personal development. Responsible for all marketing and public relations activities at Rosenthal Capital, LLC her focus includes internal and external planning, plus development and implementation of all marketing and PR strategies, communications and activities.

Michele is also an award-nominated author of multiple books, journalist, speaker and certified professional coach (plus one helluva salsa dancer!).

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