The headline number
The Initial Balance (IB) is the high and low established in the first 60 minutes of regular trading, 09:30 to 10:30 ET. It is the day's opening reference range, and price leaving it is the single most reliable event on the session clock. We measured every RTH session on NQ and ES from 2020 to mid-2026 and asked the simplest possible question: how often does price trade beyond the IB high or low before the close?
of 1,670 sessions · only 3.0% stay inside
of 1,668 sessions · only 2.2% stay inside
A "break" here means any trade beyond the IB high or low by at least one tick, measured to the 16:00 ET close. On both instruments, staying inside the first-hour range all day is a 2–3% event, roughly one session a month.
The full breakdown
The either-side number hides the more useful detail: which side breaks, and how often both do. ES is the more two-sided market, it revisits its opening hour from both directions more often, while NQ is likelier to pick a side and run.
| Outcome (to 16:00 ET close) | NQ | ES |
|---|---|---|
| Breaks either side | 97.0% | 97.8% |
| Breaks the IB high | 63.0% | 67.1% |
| Breaks the IB low | 55.6% | 59.4% |
| Breaks both sides | 21.7% | 28.6% |
| Stays inside (neither) | 3.0% | 2.2% |
ES breaks both the IB high and low on 28.6% of days versus NQ's 21.7%. If you fade the IB edges expecting a return trip to the other side, the S&P gives you that trade meaningfully more often. NQ rewards commitment to a direction; ES rewards rotation.
Initial Balance
Draws the 09:30–10:30 Initial Balance high and low automatically at 10:30 ET, then projects the 1×, 2×, and 3× extension targets, the exact levels this study measures, live on your NinjaTrader 8 chart.
See the Initial Balance indicator →When it breaks, and which side first
The break is a morning event. On roughly five of every six days, one side of the Initial Balance is already gone by noon, so the setup lives in the first two hours after the IB closes, not the afternoon. The first break slightly favors the upside on both instruments.
| Measure | NQ | ES |
|---|---|---|
| Either side broken by noon (12:00 ET) | 83.2% | 86.1% |
| IB high breaks first | 51.9% | 53.1% |
| IB low breaks first | 45.0% | 44.7% |
| Neither breaks (inside day) | 3.0% | 2.2% |
If the Initial Balance has not broken by noon, you are in the ~15% tail, and the odds tilt toward a rotational, range-bound afternoon. That absence of a break is itself information: it is the early tell of an inside or balancing day.
Does the day of week matter?
Barely. The either-side break rate is remarkably stable Monday through Friday, there is no "quiet day" to reliably fade the Initial Balance on.
| Weekday | NQ either-side | ES either-side |
|---|---|---|
| Monday | 96.7% | 95.8% |
| Tuesday | 97.0% | 98.5% |
| Wednesday | 97.6% | 98.2% |
| Thursday | 97.3% | 98.2% |
| Friday | 96.0% | 98.5% |
The break happens across the week within a two-point spread. NQ's Monday and Friday are marginally the calmest; ES is steadiest of all, never dropping below 95.8%. Whatever edge you build on the Initial Balance, it does not need a day-of-week filter.
How wide is the first hour?
The Initial Balance range, in points and in dollars per mini contract. On both instruments the first hour maps out more than half the day's total range, which is why the IB high and low act as the session's reference rails.
| Metric | NQ | ES |
|---|---|---|
| Avg Initial Balance range | 144.5 pts | 28.7 pts |
| … in dollars (1 mini contract) | $2,890 | $1,435 |
| Avg full-session (RTH) range | 254.4 pts | 55.7 pts |
| IB range as % of RTH range | ~57% | ~52% |
Dollar figures use the mini point values, NQ at $20 per point and ES at $50. Because the first hour contains over half the day's range, a stop placed across the IB high or low is a position-sizing decision, not an afterthought, size it against the range, not a fixed contract count.
What it means for your trading
A near-certain break rate is not a trade by itself, 97% of days break some side, and that count includes both the clean trend break and the false break that reverses. What the data does establish:
- ·Inside days are noise-level rare (2–3%). Building a plan around the IB holding all day fights the base rate.
- ·The read is a morning read. 83–86% of breaks land by noon; the afternoon is the exception.
- ·ES two-sided, NQ one-sided. ES breaks both rails 28.6% of the time, plan for the return trip; NQ more often commits.
- ·The rails contain the range. IB is 52–57% of the full session, so the break level is where the day's structure pivots.
For the setups that turn these frequencies into entries, breakout, fade, and scaling with defined rules, read the Initial Balance trading strategy. To size the stop this study implies, use the risk calculator.
Methodology
- Instruments
- NQ (E-mini Nasdaq-100) and ES (E-mini S&P 500), computed from continuous MNQ/MES micro-contract prices, the identical price series, differing only in dollar multiplier.
- Sample
- NQ n = 1,670 · ES n = 1,668 RTH sessions (3,338 total)
- Period
- 2 Jan 2020 – 30 Jun 2026 (~6.5 years)
- Initial Balance
- 09:30–10:30 ET, the first 60 minutes of the regular session
- Break definition
- Any trade beyond the IB high or low by ≥ 1 tick (0.25 pt), measured to the 16:00 ET close
- Data
- 1-minute bars, US/Eastern; Steady Turtle proprietary session database
Futures and forex trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing ones' financial security or life style. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results.
Testimonials appearing on this website may not be representative of other clients or customers and is not a guarantee of future performance or success.
Hypothetical performance results have many inherent limitations, some of which are described below. No representation is being made that any account will or is likely to achieve profits or losses similar to those shown; in fact, there are frequently sharp differences between hypothetical performance results and the actual results subsequently achieved by any particular trading program. One of the limitations of hypothetical performance results is that they are generally prepared with the benefit of hindsight. In addition, hypothetical trading does not involve financial risk, and no hypothetical trading record can completely account for the impact of financial risk of actual trading. For example, the ability to withstand losses or to adhere to a particular trading program in spite of trading losses are material points which can also adversely affect actual trading results. There are numerous other factors related to the markets in general or to the implementation of any specific trading program which cannot be fully accounted for in the preparation of hypothetical performance results and all which can adversely affect trading results.