The TSPMarketTiming system was founded on the idea that successful growth of retirement savings could be quantified with a math-based approach, not opinions.
Our investment model, The S/G Model Portfolio Trading System™, is a proprietary, rules-based mathematical system designed exclusively for Federal Government employees and U.S. military personnel participating in the Thrift Savings Plan (TSP). The system is intentionally simple, focusing solely on disciplined, back-and-forth allocations between the S Fund and the G Fund.
Throughout history, the S Fund has outperformed the other funds (G, F, C, and I). Our system was developed to exceed its overall performance.
When the system generates a "Buy Signal," we issue an IFT into the S Fund. When the system generates a "Sell Signal" (for the S Fund), we issue an IFT into the G Fund.
Alpha Verifications Services has given us their stamp of approval, showing that our trading model far exceeds the buy-and-hold performance of the S Fund alone.
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The Annualized Returns (S & G Funds) of our trading model (Years 2009-2025) is +20.9%. The buy-and-hold strategy of investing (20% in each fund) is +9.1%.
Starting with a $100,000 account in year 2009, our system increased to $2,265,732, compared to $413543 for the buy-and-hold strategy.
In addition, our model has outperformed the buy & hold strategy in 15 of 17 years.
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Updated 01/30/2026: Our S/G Model Portfolio Trading System™ is starting the new year on a strong note, gaining +6.51%. By comparison, a buy-and-hold allocation (20% in each fund) is up +2.07%. The stock funds have advanced +3.27%, while the G Fund has edged higher to +0.37%.
Our S/G Model Portfolio Trading System™ profited +10.27%. The buy-and-hold allocation (20% in each fund) returned +14.66%, while the G Fund gained +4.44%. While this marked the first time our model slightly trailed the buy-and-hold approach, results remained broadly in line with the S Fund and well ahead of the G Fund.

Our S/G Model Portfolio Trading System™ profited +23.13%. The buy-and-hold strategy (20% in each fund) returned +10.38%. The G Fund returned +4.40%. We outperformed the buy-and-hold strategy by +12.75%.

Our S/G Model Portfolio Trading System™ profited +26.75%. The buy-and-hold strategy returned +15.95%. The G Fund returned +4.22%. We outperformed the buy-and-hold strategy by +10.80%.

Our S/G Model Portfolio Trading System™ profited +1.79%. The buy-and-hold strategy of investing had a loss of -13.60%, while the S Fund had a horrible loss -26.26%. We outperformed the buy-and-hold strategy by +15.39% and the S Fund by +28.05%.

Our performance has been independently verified from January 1, 2009 to July 19, 2022 by Alpha Verification Services. From that time forward, TimerTrac has been tracking our signals since July 18, 2022. We plan on having our performance continually verified by Alpha on a yearly basis.
Once you leave the Federal service, you can continue to invest through the Thrift Savings Plan, until the day you need it. In addition, you can continue to use our service to even build your savings further in retirement.
Our goal is to present an investment model that is designed to help achieve your financial goals, so that you can retire sooner rather than later, and retire in comfort.
DISCLAIMER: We are not affiliated with the TSP, Thrift Savings Plan, tsp.gov, frtib.gov, or any U.S. government agency or uniformed military services.