Balance and imbalance

Tuesday 22 September 2026. All night NQ trades between 30,670 and 30,916.5, up and down, for fifteen and a half hours. At 09:42 ET (20:42 ICT) the regular session prints 30,917, above the whole night.

Is that a breakout? Should you buy it? Neither question can be answered at 09:42. The print is a claim that buyers will pay higher prices; whether the auction agrees is decided over the next hour, by time and volume. This lesson teaches the market’s two states and how to watch the switch between them.

Key terms

Balance (cân bằng): price rotates inside a range while both buyers and sellers trade actively, so neither side extends the range for long Definition. Volume piles up in the middle.

Imbalance (mất cân bằng): price moves in one direction to new prices because one side trades aggressively and the other steps back Definition. Volume is thin along the way.

Balance edges (biên vùng cân bằng): the high and low of a balance Definition. Here we use the overnight range, 18:00 to 09:30 ET, as an easy-to-measure stand-in for the latest balance. Not every overnight session is balanced; some trend all night.

Probe (thăm dò): a trade beyond a balance edge, testing whether anyone will do business at the new prices Definition. Acceptance (được chấp nhận): the auction keeps trading beyond the edge, with time and volume, until a new area of value forms there Definition. Rejection (bị từ chối): price returns inside the old range quickly.

Terms you need: the value area is the price range holding about 70% of a period’s volume, and the POC (point of control) is its busiest price. M1.01 introduced both; M2.01 and M2.02 build them step by step.

Chart first: one cycle on real NQ prices

How it works

Two states, alternating

The auction (M1.01) is always in one of two states. In balance both sides accept the current prices, so price rotates and volume builds in the middle. In imbalance one side is no longer satisfied and moves price until it finds the other side again Definition. Then a new balance forms at a new price, and the cycle repeats. The figure shows one full turn: overnight value at 30,755 to 30,880, a morning break, then two-way trade again a night later, the POC 255 points higher.

The transition is the event

Inside a balance nothing new is happening: it is context. Inside a strong imbalance the move is already underway. The moment worth your attention is the switch, when one side shows its hand:

• Balance to imbalance: someone acts with initiative (M1.03) and pushes price beyond an edge.
• Imbalance back to balance: the push runs out and two-sided trade resumes, at the new prices (the probe succeeded) or back inside the old range (it failed).

A print is a claim; acceptance is the verdict

The first trade beyond an edge only tells you that someone paid that price. Acceptance shows up as three things beyond the edge: time (price stays there), volume (real business is done there) and value (a new value area starts to form there) Definition. M4.09 turns these into a written, checkable rule; here you only need to see them.

On 22 September all three appeared. Of the volume traded between the 09:42 break and noon, about 70% was above 30,916.5, and the 09:30 to 12:00 value area (30,890 to 30,955) sat entirely above the overnight value area (30,755 to 30,880). Notice what acceptance did not require: the pullbacks at 10:40 and 11:40 dipped to 30,890.5 and 30,885.75, below the old top. Acceptance is about where business gets done, not about a line never being touched again.

Vocabulary: one-time framing

One-time framing up (OTFU, khung một chiều đi lên) means each bar’s low is above the previous bar’s low; one-time framing down (OTFD) means each bar’s high is below the previous bar’s high Definition. It is usually read on 30-minute bars; any bar size works if you say which.

On 22 September, 10-minute bars framed up for seven bars, 09:30 to 10:39, lows rising from 30,763.5 to 30,936.5; the 10:40 bar’s low of 30,890.5 ended it. Whether framing tends to continue is not yet measured by our lab: it describes who has been in control, not what comes next.

What the data says

Two popular ideas grow out of this lesson. The first is “balance has memory”: old balance edges keep acting as support and resistance. Our lab tested overnight highs and lows against random prices at the same distance from the open.

The second idea is “a failed break travels to the other side of the range”. A public practitioner study of NQ tested it on prior-day highs and lows.

So balance edges are for describing the auction: where the range was, which side probed, whether it was accepted. They are not shown to hold price better than any other price.

Myth / hypothesis: “The first breakout from a balance usually fails, so fade it.” A common profile-trader observation; our lab has not measured it against a placebo, and failed breaks did not travel further than baseline in the study above. Treat the first break as a question, not a signal either way.

Worked example: the long side, 22 September 2026

Historical NQ prices; the trade framing is an illustration, not a call.

1. Before the open: mark the balance. Overnight range 30,670 to 30,916.5, value 30,755 to 30,880. The open at 30,764.25 sits inside value: the auction is still balanced.
2. 09:42 ET (20:42 ICT): the probe. Price trades above 30,916.5. You note it; you do not act on the print alone.
3. 09:42 to 10:40: watch for acceptance. Price holds above the edge, volume builds there, the bars frame up. By late morning the busiest price, 30,922.5, sits above the old top.
4. Write the conditional plan. If acceptance above 30,916.5 holds, buyers are in control. Invalid if price returns into the old value area, below 30,880, and stays there: that line is where a stop or exit would go.
5. What happened. Value built higher and the session closed at 31,029.25, near its high of 31,065.5.

The mirror and the failure

Short side: Wednesday 23 September. The new overnight balance ran 30,910.75 to 31,094.75. At 09:38 ET (20:38 ICT) price broke the low, and the 10-minute bars framed down for the next hour (the drill below walks through them). The day’s value area, 30,655 to 30,790, formed below the old balance; the close was 30,771.25. Same reading, mirrored.

The failure: Monday 2 November. The overnight balance ran 28,587 to 28,844. At 10:22 ET (22:22 ICT) price broke the top and reached 28,891.25, 47.25 points above it. Within a quarter of an hour it traded back inside; the 10:30 bar closed at 28,813.75. No time beyond, no value built: rejected, and anyone who bought the print near 28,850 was trapped. That afternoon NQ broke the overnight low and closed at 28,137.25. Do not turn that second half into a rule: a rejection says the auction refused those prices, not that the other edge comes next.

How often does each outcome happen? Our lab checked every regular session it recorded this autumn.

Both sides looked alike: 9 of 23 upward first breaks closed beyond, and 12 of 27 downward ones Context. Read it as context, not odds: one autumn, no placebo, and “closed back inside” does not mean a fade would have paid.

Do it on the platform

Prop-firm note. The “invalid below 30,880” line in the worked example is where a stop belongs. On an evaluation or funded account, the dollars that stop risks must fit the firm’s loss limits; the Prop Firm course shows those only on dated rule cards, and RSK1.05 owns the sizing arithmetic.

Common mistakes

Common mistake: Buying the first print beyond the edge. On 2 November that print was 47 points above the balance and back inside a quarter of an hour later. Wait for time, volume and value beyond the edge, or skip the trade.

Common mistake: Treating “balance has memory” as a measured fact. Overnight highs and lows held price at the placebo rate in our lab’s test. Mark them as context, not as a reason to trade.

Drill: read the 23 September open

Use these 10-minute bars from Wednesday 23 September 2026 (historical NQ). Overnight range: 30,910.75 to 31,094.75.

• Bar (ET): 09:30 — High: 31,013.00; Low: 30,902.00; Close: 30,914.25.

• Bar (ET): 09:40 — High: 30,925.00; Low: 30,860.75; Close: 30,879.75.

• Bar (ET): 09:50 — High: 30,888.25; Low: 30,832.75; Close: 30,846.00.

• Bar (ET): 10:00 — High: 30,871.00; Low: 30,766.25; Close: 30,769.00.

• Bar (ET): 10:10 — High: 30,773.00; Low: 30,670.75; Close: 30,672.75.

• Bar (ET): 10:20 — High: 30,700.50; Low: 30,642.75; Close: 30,678.75.

• Bar (ET): 10:30 — High: 30,738.75; Low: 30,657.75; Close: 30,697.25.

1. In which bar was the overnight low first broken, and by how many points at that bar’s low?
2. Through which bar did the 10-minute bars frame down (OTFD), and which bar ended it?
3. At the 09:50 close, would you call the probe rejected, or still being tested? Why?

Recap

• The auction has two states: balance (rotation, two-sided, volume in the middle) and imbalance (one direction, one side in control, thin volume).
• The transition is what matters: a probe beyond a balance edge is a claim, and acceptance (time, volume and value beyond the edge) is the verdict.
• OTFU and OTFD describe bars already printed; they are vocabulary, not a forecast.
• Overnight balance edges held price at the placebo rate in our lab’s test, and failed breaks did not travel to the other side more often than baseline in a public NQ study: use edges to describe, not to predict.

Further reading

• Auction Market Theory: a plain-language walk through balance and imbalance cycles.
• Trading Key Market Auction Reversals: how practitioners read failed probes at balance edges (practitioner view, untested).
• Order Flow, Measured: the public practitioner study cited above (claims AP-03 and AP-04).
• Our lab: overnight highs and lows tested against same-distance random prices over almost three years (no edge), and the first-break outcomes of 58 recorded NQ sessions from autumn 2026.

Prerequisite: M1.01 What is auction market theory. Next: M1.03 Initiative vs responsive activity names the two kinds of trader behind a probe and its rejection.

Educational content only. Not financial advice. Futures trading involves substantial risk of loss.