Reference
Trader glossary.
Every term in the terminal, defined the way a working scalper would explain it. If a definition here disagrees with what shows up in a tooltip, the glossary is wrong — file a bug.
ATM / ITM / OTM
Options
At / In / Out of the money. Where the strike sits relative to spot. ATM scalps are our default — tightest spreads, fastest delta change.
ATR
Volatility
Average True Range. Average size of recent candles. We use ATR(14) on 1-min bars to set initial stop distance.
Bracket Order
Execution
Single order with attached SL and target legs. Broker-side enforced — we prefer these because they survive disconnects.
Calibration Error
Honesty
Difference between predicted and actual win-rate. If 70%-confidence signals win only 55% of the time, calibration error is 15 pts. We publish this weekly.
Confidence Bucket
Signals
Signals are grouped into 60-70, 70-80, 80-90, 90+ confidence bands. Each band has its own published win-rate.
Delta
Greeks
How much option price moves for a ₹1 move in spot. ATM ≈ 0.5. Scalpers monitor delta to size positions consistently across IV regimes.
Drawdown
Risk
Decline from a previous equity peak. Worst drawdown stays visible on our home page on purpose.
Expiry Gate
Risk
Server-side rule that refuses new entries in the last 30 mins of expiry day. Theta and gamma both spike — fills get noisy.
Gamma
Greeks
Rate of change of delta. High on expiry day ATM strikes — small spot moves create huge option-price moves.
IV (Implied Volatility)
Volatility
Market's expectation of future volatility, priced into options. We track IV regime (Low / Normal / High / Stress) per index.
Kill Switch
Risk
Single button that cancels all open orders and flattens all positions on connected brokers. Logged in the audit chain.
Latency
Execution
Time from signal generation to order ack. p50 / p95 published per broker on the status page.
OCO
Execution
One-Cancels-Other. SL and target legs where filling one cancels the other. Emulated on brokers that don't support it natively.
Out-of-Sample (OOS)
Honesty
Performance on data the model has never seen during training. The only kind of number we publish. In-sample numbers are watermarked.
Reliability Diagram
Honesty
Plot of predicted vs actual win-rate across confidence buckets. A perfectly calibrated engine sits on the diagonal.
Risk Gate
Risk
Server-enforced rule that blocks order placement when daily loss, VIX, spread, or expiry condition is hit. UI cannot override.
Scalp
Strategy
Short-duration trade, typically 2-30 minutes, aiming for 1R-3R. DyadScalp is built for this timeframe only.
Slippage
Execution
Difference between intended price and filled price. We log it on every fill and audit weekly cohorts.
Spread (bid-ask)
Liquidity
Gap between best buy and best sell. When > 50bps on an index option, our engine refuses to arm.
Theta
Greeks
Time decay per day. Scalpers exit before theta dominates — usually within the same hour.
VIX
Volatility
India VIX. NSE's implied-volatility index. When > 25, our engine pauses new entries until it cools.
Walk-Forward
Honesty
Validation method where the model is retrained on a rolling window and tested on the next-out window. All our published edges are walk-forward, not back-fit.
Win Rate
Honesty
Fraction of trades that close at a profit. By itself it's meaningless — pair it with R-multiple and expectancy.
Missing a term? Suggest one.