Prior day and pre-market high low

How it works

This indicator automatically calculates and displays the prior day's high and low, along with the pre-market high and low, as colored lines spanning the entire trading session. It leverages the request.security() function to fetch price data without offsetting the series, ensuring accurate level identification.

The indicator creates distinct lines for each session's key price levels, allowing traders to visually track how price interacts with these important reference points throughout the trading day, including extended session periods from pre-market to post-market.

Why it may be useful

By providing clear visual markers for previous session's critical price levels, this indicator helps traders quickly identify potential support and resistance zones. These reference points can offer insights into market sentiment, potential trend reversals, and areas of price congestion.

The ability to see these levels across the entire extended trading session gives traders a more comprehensive view of price action, enabling more informed decision-making and helping to anticipate potential market movements based on historical price behavior.

When to explore it

This indicator is most effective for intraday traders who want to understand price dynamics around key historical levels. It works particularly well during volatile market conditions where price tends to respect or react to previous session boundaries.

Traders can use these levels to identify potential entry and exit points, gauge market sentiment, and develop trading strategies that capitalize on price interactions with prior session highs and lows. It is especially useful for day traders and scalpers who rely on short-term price movements.

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