ORB Lab

Opening-range-breakout retest scalp, codified from the Tradewithkham video. This replays the rules on candle data and reports an honest win rate and expectancy. Synthetic data by default — it proves the engine, not the edge. Not financial advice.

Market

Symbol (label only in Phase 0) Opening range

Trade window after open (minutes)

Rules

Reward : Risk target (R) Retest tolerance (% of range) Risk per trade ($)

Fees per side ($)

Slippage (ticks)

Data

Sessions to simulate Volatility / seed

Results

Run a backtest to see results.

Trades

#	Day	Side	Entry	Stop	Target	Exit	R	P&L

The codified rules

Mark the opening-range high & low (first 15-min candle).

Wait for a candle to close its body beyond the range. Above = long, below = short.

On the lower timeframe, wait for a pullback that retests the broken level.

Enter on a confirmation candle at the retest.

Stop = break of structure (close back through the level).

Target = at least 2R. Exit at window close if neither hit.