A chart price is not a guaranteed fill
Candles summarize completed transactions. An order still interacts with the currently available bids and offers, and those prices can change before the order reaches the market.
The visible spread is the first execution cost. Slippage adds the difference between the expected price and the actual average fill, especially when size is large relative to available liquidity.
Risk must include execution
Position-sizing math based only on entry and stop can understate loss when the symbol moves quickly or has thin depth. A safer plan reduces theoretical size for expected spread, slippage, fees, and the possibility that an exit fills across several prices.
- Observe spread stability, not one snapshot.
- Compare planned size with visible and typical liquidity.
- Assume fast markets can fill worse than the stop price.
- Skip trades whose execution risk cannot be bounded.
Validate liquidity before sizing
A scanner result can surface activity, but it cannot guarantee executable liquidity. Inspect available quotes, reported prints, spread behavior, and chart speed before deciding whether a symbol can support the contemplated size.
Educational content only. Trading involves substantial risk, and scanner events are not recommendations to buy or sell securities.