Our Approach
At Apex Equity, we believe investment decisions should be driven by data, not emotions or market commentary. Our strategies are built on a systematic, quantitative approach that analyzes decades of historical fund performance to identify recurring seasonal patterns.
We don't predict the future. We identify patterns that have persisted across multiple market cycles — bull markets, bear markets, recessions, and recoveries — and build allocation rules that capitalize on these patterns.
Backtesting Methodology
Data Collection
We collect and maintain historical daily price data for all funds in our coverage universe:
- TSP Funds: C, S, I, F, and G Fund daily share prices from 2003-present (20+ years)
- Fidelity Funds: 11 mutual funds including FXAIX, FCNTX, FBGRX, FSPGX, FSMAX, FSSNX, FTIHX, FXNAX, FBALX, FIOFX, and SPAXX
- Vanguard Funds: Mutual funds including VFIAX, VTSAX, VIGAX, VBTLX, and others
Data is sourced from official fund providers and verified for accuracy. We account for dividends, distributions, and fund splits.
Strategy Generation
Our scanner engine systematically generates and tests thousands of possible allocation strategies:
- Define the allocation universe: Which funds can be held in each calendar month
- Generate strategy candidates: Every possible monthly fund rotation combination
- Apply realistic constraints: Account for transfer limits (TSP allows 2 interfund transfers/month), settlement periods, and execution timing
- Backtest against historical data: Simulate each strategy's performance over the full historical period
Performance Metrics
Every strategy is evaluated across multiple dimensions, not just raw returns:
- CAGR (Compound Annual Growth Rate): The annualized rate of return over the test period
- Maximum Drawdown: The largest peak-to-trough decline — measures worst-case scenario
- Volatility: Standard deviation of returns — measures consistency
- Sharpe Ratio: Risk-adjusted return (return per unit of risk taken)
- Composite Score: Our proprietary weighted score combining all metrics to rank strategies
Important: Past Performance Disclaimer
All backtested results show what would have happened historically. Past performance does not guarantee future results. However, the seasonal patterns underlying our strategies are driven by structural market factors (tax cycles, institutional fund flows, behavioral patterns) that have persisted for decades.
Strategy Filtering
Not all strategies make the cut. We apply strict filters to ensure quality:
- CAGR filter: Strategy must exceed the buy-and-hold benchmark by a meaningful margin
- Drawdown filter: Maximum drawdown must be within acceptable limits
- Consistency filter: Strategy must perform well across multiple sub-periods, not just one lucky stretch
- Practicality filter: Strategy must be executable within fund transfer rules and realistic timing
Why Seasonality Works
Seasonal patterns in financial markets aren't random — they're driven by well-documented, recurring factors:
- Tax-Loss Harvesting (November-January): Investors sell losing positions in December for tax benefits, then reinvest in January, creating predictable selling pressure followed by buying pressure
- Institutional Fund Flows: Mutual funds, pension funds, and endowments rebalance on predictable quarterly and annual schedules
- Corporate Earnings Cycles: Quarterly earnings seasons create predictable volatility patterns
- Federal Reserve Calendar: FOMC meetings follow a fixed schedule, influencing market behavior around announcement dates
- Behavioral Finance: Human psychology creates repeating patterns — optimism in spring, vacation-driven low volume in summer, year-end window dressing
These factors are structural, not random. They've persisted across decades of data because they're driven by institutional rules, tax codes, and human behavior — none of which change quickly.
Technology Stack
Our backtesting and scanning platform is built in-house using:
- Strategy Scanner: PHP-based engine that generates, backtests, and ranks thousands of strategies
- AI Analysis: Large language model integration for generating strategy insights and risk assessments
- Real-Time Alerts: Automated notification system that sends allocation change alerts via email
- Interactive Backtester: Browser-based tool that lets users test custom strategies against historical data
About the Team
AE
Apex Equity Research Team
Our team combines expertise in quantitative analysis, software engineering, and financial markets. We are passionate about making data-driven investment strategies accessible to everyday investors — particularly federal employees and military members who have access to the TSP and IRA retirement accounts.
We built Apex Equity because we saw a gap: powerful institutional-grade backtesting and seasonal analysis tools existed for Wall Street, but nothing comparable was available for TSP and IRA participants. Our mission is to bridge that gap.
Data Sources & References
Primary Data Sources
- TSP Fund Prices: Official Thrift Savings Plan daily share price data (tsp.gov)
- Fidelity Fund Prices: Historical NAV data from Fidelity Investments
- Vanguard Fund Prices: Historical NAV data from The Vanguard Group
- Economic Data: Federal Reserve Economic Data (FRED)
Academic Research on Seasonality
- "Sell in May and Go Away": Bouman, S. & Jacobsen, B. (2002). The American Economic Review, documenting the persistent Halloween effect in equity markets
- "The January Effect": Rozeff, M.S. & Kinney, W.R. (1976). Journal of Financial Economics, establishing the small-cap January premium
- "Stock Market Seasonality": Jacobsen, B. & Marquering, W. (2008). Journal of Banking & Finance, confirming seasonal patterns across 37 countries
- "Calendar Effects in Stock Markets": Lakonishok, J. & Smidt, S. (1988). Journal of Financial Economics, documenting persistent calendar anomalies over 90 years of data
Regulatory & Disclosure
- Apex Equity, LLC is not a registered investment advisor and does not provide personalized financial advice
- All strategies are for educational and informational purposes
- Past performance does not guarantee future results
- Users should consult a qualified financial advisor before making investment decisions
- TSP rules and contribution limits are subject to change — verify current limits at tsp.gov