# The prior day, the opening range and the month, on the same chart as the dealer levels.

> Five groups of reference prices, each with its own switch: the prior day, the opening range, the premarket, the prior week and the month to date. Where one lands on a wall or a level of interest they share one line, so you see at once that a price matters twice.

Source: https://firmtape.com/features/live/session-levels

LIVE for today; free on every finished session (PM in LIVE only).

![SPX chart with the opening range high and low and the month-to-date high drawn as thin lines beside the walls and levels of interest](https://archive.firmtape.com/press/features/live/session-levels.49a07bcf.webp)

**Why:** the reference prices of the sessions around the one on screen, joined with the dealer levels where they meet. **Where:** **LAYERS** > **SESSION**: **PD**, **OR**, **PM**, **WEEK**, **MONTH**.

## How to use it

1. Open **LAYERS** in the chart's header. The **SESSION** row has five switches, all off until you turn them on; the chart remembers your choice.
2. **PD**: the prior day's high, low and close (PDH, PDL, PDC).
3. **OR**: the opening range, 09:30 to 10:00 ET (ORH, ORL), dim while it forms and final from 10:00.
4. **PM**: the premarket high and low, 04:00 to 09:30 ET (PMH, PML), in LIVE where the premarket is on the chart.
5. **WEEK**: the prior calendar week's high and low (PWH, PWL); **MONTH**: the month's high and low to date (MTDH, MTDL).

## How to read it

- Each group has its own colour, a badge at the line's left end and a plate on the price scale. A price crossing a session level flashes it.
- When a session level lands on a wall or a level of interest they share one line and one plate naming every member, such as **CW·C2·PDC 7620**. The strongest kind draws the line: a wall, then a level of interest, then a session level.
- A replay draws them as they stood at its cursor.

## What it measures

Session levels come from prices, not from a book. The prior day's high and low are read from that session's per-second prices, so a high the replay of that day reached is the high on the line. Week and month come from the finished sessions before the day on screen; the month adds the day itself up to the cursor.

## Limits

PM is LIVE only: a replay has no premarket on its chart. On ES, NQ and RTY every session level is moved by the day's basis, the same way the view moves its dealer levels.

## Related

- [LIVE](https://firmtape.com/features/live)
- [LIVE: Walls and levels](https://firmtape.com/features/live/walls-and-levels)
- [LIVE: PREMARKET](https://firmtape.com/features/live/premarket)
- [LIVE: LAYERS](https://firmtape.com/docs/live#layers)

## Questions

**Where do the prior day's high and low come from?**

From that session's per-second prices, the same series a replay of that day draws.

**Why is the opening range dim?**

It is still forming. It holds its final values from 10:00 ET.

**Why is there no PM line on a replay?**

The premarket is on the chart in LIVE only, from 04:00 to 09:30 ET.

**Do session levels work on ES and NQ?**

Yes. Every session level is moved by the day's basis, the same way the dealer levels are.