ORB Box + VWAP Stats - opening range box, 1R/2R targets, session VWAP and historical break statistics - indicator for MetaTrader 5

What it does

For each session the indicator takes the high and low of the opening range (default 13:30 GMT, 30 minutes, i.e. the first half hour of the US cash session) and draws a box over it. Once the range has finished, the high and low are extended to the session end (default 20:00 GMT) together with the targets.

• Targets use the box height as "R": long 1R = range high + R, long 2R = range high + 2R, short 1R = range low - R, short 2R = range low - 2R. (A breakout entered at the box edge with the opposite edge as stop would risk exactly R.)
• Session VWAP: cumulative typical price ((H+L+C)/3) weighted by volume, restarted at the session start. Tick volume by default; with the "real volume" option it uses real volume when the symbol has it and falls back to tick volume otherwise (the Experts tab says which one is used).
• Session hours are entered in GMT and shifted by Server time = GMT + N hours . To type server time directly, set the offset to 0. Sessions that cross midnight are supported.
• The range length must be a multiple of the chart timeframe (for example 30 minutes on M1, M5, M10, M15 or M30; 15 minutes on M5 or M15).

Statistics panel (historical, not a forecast)

Over the last N finished sessions (default 20) that have a complete opening range, it shows the share of sessions in which a bar CLOSED:

• above the range high only, below the range low only, on both sides, or on neither side;
• and, among the sessions with a break, the share in which price afterwards reached 1R and 2R in the direction of the first break (bars after the break bar, using their high/low, until the session end).

Please read these numbers for what they are. They are counts of what happened in the sample, with a small N, on your broker's data. They do not tell you what will happen next, they do not include costs or slippage, and "reached 1R" does not check whether the opposite side of the box was touched first, so it is not a win rate. The still-running session is not counted.

No repainting

• Range, targets and break state are computed only from bars that have already closed. The range levels are shown only after the range bars are complete and never change afterwards.
• The VWAP buffer of the still-forming bar repeats the value of the last closed bar; every closed bar keeps its final value.
• Break alerts are evaluated on closed bars only. An alert is raised once per direction per session. History is not alerted when the indicator is attached or reloaded.

Buffers for Expert Advisors (iCustom)

Buffers 0-5 and 7 are EMPTY_VALUE until the range has finished (from the first bar that opens at or after the range end) and again after the session end. Buffer 6 starts with the first closed bar of the session and ends with the session. Read shift 1 for the value that is valid for the last closed bar. Buffers 0-6 are plotted as lines; buffer 7 is not drawn (see the Data Window).

Example (EA side), reading the range high and the VWAP of the last closed bar:

int h = iCustom(_Symbol, PERIOD_M5, "ORBVWAPStats");
double hi[1], vw[1];
if(CopyBuffer(h, 0, 1, 1, hi) == 1 && hi[0] != EMPTY_VALUE &&
   CopyBuffer(h, 6, 1, 1, vw) == 1 && vw[0] != EMPTY_VALUE)
   Print("OR high: ", hi[0], "  VWAP: ", vw[0]);

Passing only the indicator name uses the default inputs.

Inputs

• Session: GMT offset (default 2), range start (default 13:30), range length (30 min), session end (20:00).
• VWAP: show, volume type (tick / real if available).
• Statistics: number of sessions (20), show panel, corner and offsets, optional print of the numbers to the Experts log.
• Look: sessions to draw (10), fill, colours, line width.
• Alerts: popup, push, sound and file name.

Notes

• Timeframes above M30 are rejected with a message in the Experts tab. Bars belong to the range or the session by their open time.
• The server offset is fixed by you. Brokers and exchanges change their offset with daylight saving time (the US cash open moves between 13:30 and 14:30 GMT); adjust the input when that happens, past bars are not shifted automatically.
• Days follow the broker server time and the hours you enter; weekends and holidays without bars are simply skipped.
• Tick volume is not exchange volume; the VWAP built on it is an approximation.
• Not financial advice; it only marks levels and counts events that already happened.

Testing

Checked in the Strategy Tester (EURUSD M5, September-October 2026, broker data) against an independent calculation from the raw rates: the opening range levels, targets, VWAP and break state matched on every bar compared (about 200,000 values), the buffer values read live on each closed bar were identical to the final values (no repainting), the statistics panel showed exactly the expected counts, and the break alerts raised were exactly the ones expected from the raw data.