Intelligent, rule-based portfolio strategies for investors
Contributor's Links: Logical Invest

Remove uncertainty about your investment strategy decisions and get superior returns with greater safety. Our quantitative portfolio strategies are delivered as a few simple ETF trades per year that you easily place in your own brokerage accounts.

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The Logical-Invest Newsletter For October 2021: Assets Drop In Unison
September was one of those months where all asset classes came out negative regardless of what they represent. The S&P 500 fell by -4.7%, the long-term Treasury ETF (TLT) lost -2.9%, and gold dropped by -3.2%.
The Logical-Invest Newsletter For July 2021: Inflation And Policy
June was a positive month for equities, seeing moderate gains in the S&P 500 and emerging markets while the Nasdaq rose by 6.3%. Suffice to say, we are at all-time highs as the U.S. indexes ride on waves of positive COVID-19 recovery.
Trading Cryptocurrencies Bitcoin And Ethereum On A Traditional Brokerage
As we are prepping to publish models based on Bitcoin and Ethereum cryptocurrency assets, we are publishing preliminary research on trading assets that track Bitcoin and Ethereum on traditional U.S. based exchanges.
Industrials, Steel And Dow Up. Safe Assets Down
March proved to be a good month for U.S. equities especially for the steel ETF (SLX +14%), the utilities sector (XLU +10.6%), industrials (XLI +9%) and the Dow stocks (DIA: +6.9%).
The Logical-Invest Newsletter For March 2021: Coming Inflation?
From the early 1960’s to late 70’s, the super-trend for yields was to increase, reflecting inflationary pressures. For the past 40 years, from the 80’s to today, the trend has headed towards lower yields.
Election Volatility Drives Negative Losses As Month Closes
October turned out to be a volatile month that ended up negative for most assets classes: The U.S. market lost -2.5%, gold -0.5%, Treasuries -3.4% while the U.S. dollar was flat.





Latest Posts
Update Of Our Asset Allocation Models
Update of our tactical asset allocation models, 10 of them added recently and are free for all our followers
Updated Overview Of Our Asset Allocation Models
With the launch of our new app we've been asked by several followers to provide an overview of the asset allocation models we currently publish. Several of them are free upon registration, so check it out!
Portfolio Builder: How To Create A Portfolio Of Portfolios
We’ve received a couple of reader questions in the last few weeks asking whether it is possible to create a “Portfolio of Portfolios” in our Portfolio Builder.
Logical Invest 2.0: Strategy & Launch Of New Application
Logical Invest launches new web application

Work Experience

Founder & Partner
January 2013 - Present (8 years 11 months) develops intelligent rule based portfolio investment strategies. These strategies are offered on a subscription basis to the public through
Colour-Science AG
June 2002 - Present (19 years 8 months)
- Development of the i2e (intelligent image enhancement) technology - Red eye removal - Image noise removal - Image processing - Quality monitoring software - ICC profiling


Eidgenössische Technische Hochschule Zürich
1988 / 1989
Master of Business Administration
Ecole polytechnique fédérale de Lausanne
1983 / 1988
Microtechnics, Robotics


The Logical-Invest Rotation Strategy Blog
Frank Grossman
Logical Invest started out as a place to join Frank Grossmann’s popular Global Growth Strategies and now has grown to include a team of researchers, strategy developers and successful investors. We share a passion for logical, rules based investing and a willingness to share our learning with others.