The Daily Gap That Acts Like a Magnet for Price
Forms every trading day in the gap between the 4:59 PM close and the 6:00 PM reopen — and price tends to come back to it.
Before you start: No prior concept needed — just comfortable reading a chart across a session open.
Part of the My Edge Official framework — refined through thousands of hours of chart study.
Every trading day between 4:59 PM and 6:00 PM NY time, a new reference forms — the gap between yesterday's close and today's open. The NDOG (New Day Opening Gap) is the first thing we mark every day, and one of the most reliable price magnets in our entire toolkit.
- Core Idea
- Why It Exists
- How Professionals Read It
- Practical Application
Every trading day there's a small jump: the price where the market closed last night and the price where it opens today aren't exactly the same. That difference — the gap between yesterday's close and today's open — is called NDOG.
Imagine someone nudging a dartboard slightly every evening before you shoot at it again in the morning. That small shift of the board is the NDOG — and interestingly, price likes to come back to that "old" board, almost like a magnet, before continuing on.
That's why NDOG is one of the first things we mark every day — it's not a signal to trade right away, but it is an important reference point for the rest of the day.
Advanced explanation⌄
Core Idea
An NDOG forms when the current trading day opens at a different price than the previous day closed — a visible price gap forms between the sessions.
Premium NDOG — today's open is above yesterday's close. Discount NDOG — today's open is below yesterday's close.
Why It Exists
We use the NDOG to determine: current price location, premium/discount relationship, intraday bias, draw on liquidity, and interaction with other PD Arrays.
How Professionals Read It
Before using the NDOG, assess: higher-timeframe context, draw on liquidity, market structure, session, timeframe, and nearby PD Arrays.
Immediately after the NDOG forms, professionals run a fixed daily marking routine:
Practical Application
⚠️ The NDOG is a higher-timeframe reference, not a trading signal. Its importance depends on overall market context, the current draw on liquidity, and confluence with other PD Arrays. Never trade it in isolation — wait for liquidity alignment, MSS, lower-timeframe price action, and PD Array confirmation.
How to Use It
In practice:
- At the 6:00 PM NY open, once the gap has formed, run the full daily marking workflow (see the list above) — this is a fixed routine, not an optional step.
- Always check the previous five NDOGs together — a single NDOG tells you less than the group (see NDOG Cluster Model for our strategy built exactly on this observation).
- If price is within roughly 150 handles of the next NDOG, prepare for possible delivery (see 150 Handle NDOG Rule) — but wait for lower-timeframe confirmation before executing anything.
Don't stop here — see how this fits with the rest of the framework.
Continue to NWOG — New Week Opening Gap →Frequently Asked Questions
What is NDOG (New Day Opening Gap)?⌄
NDOG is the price gap that forms every trading day between roughly 4:59 and 6:00 PM New York time, between the previous day's close and today's open — one of the more reliable price magnets in this toolkit.
How do I use the NDOG in daily analysis?⌄
Mark it the moment it forms along with the previous day's high/low, weekly and daily equilibrium, and IPDA 20/40/60 ranges, then treat it as a higher-timeframe reference rather than a standalone trading signal.
NDOG vs NWOG — what's the difference?⌄
NDOG is the daily version of the gap, formed between sessions each day; NWOG is the same concept on a weekly rhythm, formed between the previous week's close and the current week's open, and it stays relevant longer.
Should I look at a single NDOG or several at once?⌄
Always check the last five NDOGs together rather than one in isolation — a single NDOG tells you less than the group, which is exactly what the NDOG Cluster Model is built to read.