Decisions made in the moment
- Driven by news, opinions, chart "feel" and tips
- Hard to measure what is actually working
- Fear and greed creep into every decision
- Results can't be reproduced or improved systematically
We treat every trading idea as a hypothesis to be tested, and most of them fail. Here is the process we teach, and the traps it is designed to avoid.
Quant trading does not require a PhD or a supercomputer. It means every decision (what to trade, when to enter, when to exit, how much to risk) follows explicit rules that were tested on historical data before real money was involved.
Write the idea as a falsifiable statement, for example "stocks in the strongest sectors keep outperforming over the next 1–3 months." Note why it should work: behaviour, structure or risk premium.
Use a point-in-time universe (only stocks that existed and were liquid at the time), adjusted for splits, bonuses and dividends, and including stocks that were later delisted.
Simulate the rules day by day with no look-ahead. Include brokerage, STT, exchange charges, stamp duty, GST, taxes and realistic slippage for each stock's liquidity.
Develop on an in-sample period, then judge on unseen out-of-sample data. Change parameters slightly. A real edge degrades gracefully, while a curve-fit one collapses.
Decide position size, number of positions, maximum drawdown tolerance, volatility caps and when to stand aside, for example when the broad market is in a downtrend.
Paper-trade, compare live fills with the backtest, then start with small capital. Journal every trade and every rule you were tempted to break.
A backtest that looks amazing is usually a warning sign. These are the most common reasons historical results don't survive contact with real markets.
Testing only on today's index members ignores the companies that failed or were removed. The result looks better than reality.
Using information that wasn't available at decision time, such as the day's close to trade at that same close, or restated fundamentals.
Tuning many parameters until the past looks perfect. The system memorises noise and fails on new data.
In small and mid-caps, the gap between the signal price and your actual fill can wipe out the entire edge.
A strategy that only worked in one bull run is a bet on that regime repeating, not a system.
The worst drawdown is still ahead of you. Live drawdowns are often deeper and longer than the backtest showed.
Ranking stocks or sectors by recent strength and rotating into the leaders.
Moving-average and breakout systems that ride long trends and cut losers.
Allocating across sectors or ETFs based on relative strength and cycles.
Rules that reduce exposure when the broad market is weak, to control drawdowns.
Important: Strategies are discussed as general concepts with historical examples only. We do not recommend specific securities, publish live signals, or suggest that any strategy will be profitable for you. Backtested results are hypothetical. See our Disclaimer.