Hypothetical backtest at a glance
What did PathfinderJunior do in its published backtest?
In a hypothetical backtest from Sep 2, 2025 to Aug 28, 2026, PathfinderJunior took 179 trades on MES (2 MES contracts). Net of commission and one tick of slippage per contract, the hypothetical net profit was $5,775 and the maximum drawdown was −$1,016, with a profit factor of 1.59 and a win rate of 54.2%.
| Backtest window | Sep 2, 2025 – Aug 28, 2026 |
| Market | MES · S&P breakout, risk-boxed |
| Size tested | 2 MES contracts |
| Trades | 179 |
| Hypothetical net profit | $5,775 |
| Max drawdown | −$1,016 |
| Profit factor | 1.59 |
| Win rate | 54.2% |
| Average trade | $32.26 |
| Largest win / loss | $393.70 / −$206.30 |
↓ The trade data behind these results: pathfinderjunior-trades.csv — every one of the 179 trades, losing trades included. Equity curve and monthly results: backtests. All 1,113 trades across 7 runs: trade data.
What it actually does
It buys the break that volume agrees with — inside a fixed risk box.
PathfinderJunior waits for price to break a recent range with volume behind it and enough movement in the market to carry it, then rides the directional expansion that tends to follow. A break on thin volume is the one that fails, so the volume confirmation is doing real work: it is the difference between a move and a twitch.
It trades one window, from late morning into the afternoon, and takes at most one trade a day. It is not built to be right more often — it wins only a little more often than it loses. The money comes from the winners being larger than the losers, and from a hard risk box that caps what a failed break is allowed to cost.
The published backtest trades two contracts on every entry. Read every figure for this engine as a two-contract result.
The honest two-sided ledger
Where it wins. Where it hurts.
Thrives in
- Trending, expansion days. When the session picks a direction and extends, a confirmed break keeps going — that is the whole thesis.
- Clean two-sided participation. Real volume behind the move is what separates a break that runs from one that fades.
- Sessions that are still moving after the morning. Its window opens in the late morning, so it needs a market that is still extending then, not one that made its whole move at the open and stopped.
Faces duress in
- Tight, range-bound chop. False breaks. Price pokes through, volume shows up, and it comes straight back. This is its #1 weakness and the risk box exists precisely for it.
- Low-volatility drift. Not enough range for a break to travel far enough to pay for the ones that failed.
- Late reversals. A break that triggers and then turns back before the session ends is the losing trade, and with one trade a day there is no second attempt to make it back.
The weakness is the point. PathfinderJunior is an S&P breakout, so treat it as one: it belongs beside engines that make money in the chop where it struggles, and not stacked with another equity-index breakout at the same firm.
The regime truth
A breakout engine is a bet on follow-through. Say so.
There is no version of this strategy that does well in a market going nowhere. PathfinderJunior needs sessions that commit to a direction; when the market stops committing, it gives back small amounts until it does.
We are not going to claim its drawdown can be engineered away. The trades that hurt and the trades that pay come from the same behavior, so the drawdown is disclosed and sized around rather than pretended away.
The flip side of that honesty: a long stretch of narrow, directionless sessions is PathfinderJunior's bad patch, and it will happen. That is what the monitoring below is for.
Risk & bail-out
Drawdown-first, with hard lines that don't move.
Every trade carries a protective stop that rests from the moment of entry — a real resting order, not a mental stop. On top of the volatility-scaled stop there is a hard cash cap, so a single failed break has a known worst case no matter what the market does.
Once a trade has run far enough in your favor the stop moves up to the entry, and the engine defends part of the open profit rather than letting a winner round-trip to nothing.
A daily loss line and a daily profit target each flatten the strategy and stand it down for the rest of the session. Anything still open is closed out before the session ends — PathfinderJunior does not hold overnight.
How we catch decay before it’s too late
We monitor this like a model, not a hunch.
Every edge decays eventually — ours included. The difference is whether you find out from a dashboard or from your account balance. PathfinderJunior runs inside a monitoring loop that compares every live trade against its learned baseline and raises a flag the moment behavior drifts.
The promise. We would rather pull PathfinderJunior back a month early than a day too late. When the data says the edge is thinning, we trim or bench it — publicly — instead of hoping it comes back.