MarketModel Advisors, LLC is the leading provider of proprietary research related to stock market indices, primarily the "fair value" of the SP500.  Clients of MarketModel include Hedge Funds, RIAs, Accredited Investors, and Regional Asset Managers.

MarketModel is founded by Mike Valletutti. Following the 1987 market crash he began developing methods for determining market valuation and trading strategies while studying statistics & probabilities, time series analysis, probability modeling, and statistical experiments at Georgia Tech.

“My passion was the stock market, having witnessed the ‘87 crash as a Sophomore at GT,” Michael comments, “Merging together the circumstances and opportunities following the crash and my early passion for the market, I came up with some economic and technical rules that performed well when applied to historical data. And then I worked for over 15 years testing and refining the model.”

"What's the market worth?" Probably the most asked question, with many different opinions.

Traditional Technical Analysis methods use price to determine price.  MarketModel uses macroeconomic inputs to help determine a value for the stock market. Long-only wealth managers are able to make finer portfolio adjustments to their equity allocations during periods of market under or over valuations.

Model Background

The goal is to use cash as part of your overall portfolio, adjusting equity holding size during the year based on Macro valuations.

Model Theory

The fundamental theory is that macroeconomic conditions lead stock market prices. If true, producing accurate, forward-looking economic forecasts (i.e. ATL Fed GDPNow) could provide clues to the future direction of the major stock indices (i.e. SP500).  Often times, stock market prices are controlled by sentiment - greed and fear - which can lead to disconnects between price's "fair value". The model wants to buy the market when price is a discount to fair value, and short the market when price is a premium to fair value.

The model isn't a crystal ball. Trade signals are based on Probabilities and Statistical methods, producing different trades with differing probability of success. Overall, model is right 2 out of 3 trades.

More recently, research has been focused on limiting maximum exposure to the stock market.  Today's markets are faster than ever, and high velocity of price movements is normal.  With high velocity markets, scaling strategies developed by the models help spread out the investment into a long or short position.

The model is not a HFT or intraday scalping algorithm, only changing the position about 2-3x a month, on average. The model is a pure directional bet on whether the SP500 will rise or fall, which during bull or bear markets, is able to profit from not only the major trend but also sell into the minor counter-trends. The result is a system designed to beat the SP index by profiting when the market loses during pullbacks.

Application of Theory - Strategy Choice

Once you have a system that produces an estimated fair value for the stock market, the next step is to decide which strategy fits the desired results. The model produces not only a prediction of direction of SP500, but also a probability strength of signal.

One could create a hedged strategy where Shorting SP is utilized, which makes profits possible during a market decline. This hedge fund approach is best combined with another long-only portfolio. This Long/Short 100% version of the model is employed by the firm's commodity pool.

Another option is to supplement the long-only strategy, using the model to change equity weighting allocations, making better timed buys and sells. Scaling between 0% long to 200% long at MAX BULL. Selling means taking profits, not shorting the market.

The graph shows 1999-2012 backtesting results of the Long-Only 200% model theory as compared to passive index investing in the SP500.

Michael J. Valletutti Biography


Georgia Institute of Technology
BIE: Bachelors of Engineering - Industrial
MSIE: Masters of Science - Probability & Statistics
Develops initial macro model


Commodity Trading Advisor (CTA) – NFA Registered
Collects nightly market data for input into model
Tracks and refines model with virtual money


Chairman and CEO, Applied Global Technologies (AGT)
Co-founder, Video Managed Services and Technology
$25M Small Business, 100+ employees
Private Equity Event


Commodity Pool Operator (CPO) - NFA Firm Registered
Underweight SPX Trading Fund, LP


Founder, MarketModel Advisors, LLC
Twitter @marketmodel
Professional Research Blog MacroSPX

Information about Modeling

What is a model?

Backward Testing

A simple example of a market model is comparing today's price to the historical average of price over, for example, the 50 past days. The rule would be to BUY when today's price is above the past average, and SELL if below. This rule could be easily backtested and other rules could be applied to produce win/loss ratio and profit/loss delta. Other rules could be applied and tested, but not so many that the rules only work for the test data. Known as curve-fitting, too many of today’s rules are created to fit just one set of past data, which will not work for new data. In simple terms, the rules were so stringent that they could only work once.

Forward Testing

The next method for a model is to forward test, which measures the results against actual forecasts. The goal is to gather real-time trades, capture their results, and compare against the benchmark backtest. Since 2013, the results were consistent with the historical testing, falling within test parameters including win/loss ratio, average drawdown, average ROR, as measured in 3 mo, 6 mo, 9 mo, and 12 mo periods. The forward test is key in determining if the backtest was uniquely unrepeatable or whether the methods applied will continue to work.

Publishing Trades

By 2012, Michael’s confidence in his own MarketModel led him to establish a futures account and commit to trading the model signals, testing different position sizes and sharing trades on Twitter. Michael's trading diary moved to private subscription service in 2013-2014 via protected Twitter, where the nightly model signals were posted, along with trading results. More recently, daily and weekly model values are delivered via membership site at http://www.macrospx.com

The model uses SP500 futures instead of the SPX cash because of the use of leverage provided by futures. Use of leverage is typically associated with high risk, however in our case, we are simply choosing to not to tie up $1M is cash buying and selling shares of the SPX. Leverage allows for the scaling from underweight SP500 to up to 1x leveraged (100% long or short).

The model's use of futures allows for scaling into very large account balances. For example, a $1B account could invest alongside the model within the SP futures market easily within the average volume and open interest of today's market.  The investment decisions are almost entirely systematic, based on the model's signals.

Macro Models for SP500 Valuation

MacroSPX Professional Blog

Wealth Managers and Investment Professionals are expected to have proprietary research that gives their client investments an edge over passive indexing.

Most already have Technical Analysis and Sentiment indicators, but few have the complete view that is provided by Macro analysis.

Get daily close and weekly research from Mike Valletutti and his models on his professional blog at http://www.macrospx.com

Sample Weekly Macro View