The Opening Range Breakout (ORB) is the most-traded and most-misunderstood strategy on the Indian intraday tape. It works — when you respect the filters. It fails badly — when you ignore them.
This is the cleanest possible version.
What is the Opening Range?
The opening range is the high and low of the first N minutes of the session.
- 15-min ORB: range of 9:15 – 9:30. Most popular.
- 5-min ORB: range of 9:15 – 9:20. Aggressive, more whipsaws.
- 30-min ORB: range of 9:15 – 9:45. Slower, fewer signals, better quality.
For Indian large-caps and Bank Nifty, 15-min ORB is the sweet spot.
The rule (one-liner version)
When price closes above the 15-min opening range high on a 5-min candle, go long. Stop = range low. Target = range size projected upward. Inverse for shorts.
That’s the entire core. Everything else is filters.
Why most people fail at ORB
- They take every breakout, including doji wicks and low-volume pokes.
- They place stops inside the range — guaranteed to get hunted.
- They trade ORB on illiquid mid-caps where the range is a single candle.
- They ignore index context (Nifty falling but you’re long an ORB breakout — bad odds).
The setup that actually works
Use these as hard filters:
Filter 1 — Universe Only Nifty 100 stocks. Liquid, real ranges, real volume.
Filter 2 — Range quality The opening range must be 0.4% – 1.2% of price. Smaller → too tight, prone to false breaks. Larger → too wide, R:R already gone.
Filter 3 — Volume confirmation The breakout candle must close with above-average volume (≥ 1.3× 20-period average). No volume = no conviction.
Filter 4 — Index alignment Nifty / Bank Nifty must be moving in the same direction. Don’t long a stock breakout while the index breaks down.
Filter 5 — Time-of-day Take the breakout only before 11:00 IST. After that, chop kicks in and ORB win-rate collapses.
Entry, stop, target
- Entry: the close of the 5-min candle that breaks the range.
- Stop: the opposite side of the opening range (range low for longs).
- Target 1: range size projected from the breakout level (1R from entry-to-range-low).
- Target 2 / trail: trail with SuperTrend(10,3) or move stop to break-even at 1R hit.
See stop-loss strategies for intraday for the full sizing discussion.
Worked example
Reliance opens at ₹2,500.
- 9:15 – 9:30 range: high ₹2,512, low ₹2,498. Range = ₹14 (0.56%) ✓.
- 9:35 5-min candle closes at ₹2,514, volume = 1.6× average ✓.
- Nifty also broke its 15-min opening range upward ✓.
- Long at ₹2,514, stop at ₹2,498 (₹16 risk), T1 at ₹2,528 (1R), T2 trail.
On a ₹2,00,000 account at 1% risk: position size = ₹2,000 / ₹16 = 125 shares.
When not to take an ORB
- Big news night before (results, RBI policy day, US Fed). Volatility distorts the range. See gap-up gap-down trading.
- Range > 1.5% of price. The R:R is gone.
- First candle prints inside-bar after a gap. Wait for confirmation.
- Expiry day on Bank Nifty (Thursday) — directionless tape.
ORB on Bank Nifty futures vs cash equity
ORB on Bank Nifty futures: works on most days but range tends to be wider. Use 30-min ORB.
ORB on cash equity: 15-min works well. Stick to top-50 by market cap.
ORB on options (buying): theta will kill you on chop. Don’t.
How AI overlays change ORB
A well-built AI overlay (see AI stock analysis in India) can pre-filter the universe to stocks with the right pre-market setup — yesterday’s close near a high, gap-up of < 1%, positive overnight news. That cuts a 100-stock universe to 5–10 worth watching at 9:30.
FAQs
Why does ORB fail so often after 11:00 AM? Indian intraday volume drops sharply between 11:00 and 13:30. Breakouts in low-volume regimes are mostly false.
Should I use SL-M or limit for ORB entry? SL-M (buy-stop above the range high) for entry, SL-M for the stop. Avoid limits — you’ll miss the move.
Does ORB work in F&O contracts? Yes, but slippage and lot-size risk are larger. Stick to liquid contracts.