What is Double Bottom?
Double bottom shows two distinct lows at similar prices with a peak between. Break above the intervening peak confirms for many traders.
Formula
Target = Neckline Price + (Neckline Price − Bottom Price)
Indian market context (NSE)
Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how Double Bottom shows up on Indian index, equity, and futures books — update to live quotes in your journal.
Nifty 50 perspective
Double Bottom on Nifty (24,300): on the 15-minute chart, combine with session VWAP and 9:15–10:00 liquidity — index double bottom signals misfire on expiry Tuesdays without volume confirmation.
Reliance Industries perspective
Double Bottom on Reliance at ₹1,300: daily vs hourly settings diverge around results and ex-dividend dates; note corporate events in journal when double bottom readings spike.
Bank Nifty futures perspective
Double Bottom on Bank Nifty futures (55,000): first-hour signals differ from post-14:30 behaviour; avoid standalone entries when banking names lead the move.
How to validate
- Forward-test Double Bottom on paper or sim for two weeks after rule changes.
- Validate only on trades where Double Bottom settings matched the written playbook.
- Split results by trending vs range weeks on Nifty before trusting the signal.
- Require higher-timeframe bias agreement if that is part of your rule.
How to track in TradeLyser
- Add Double Bottom reading to trade entry notes (value + timeframe).
- Create tags: “Double Bottom aligned” / “Double Bottom ignored”.
- Monthly: filter trades by alignment tag and compare win rate and avg R.
- Screenshot chart context for mentor review on disputed trades.
Best practices
- Combine Double Bottom with higher-timeframe bias — not as a lone trigger.
- Avoid curve-fitting settings on less than three months of tagged data.
- Refresh playbook screenshots when changing Double Bottom parameters.
- Skip trading when Double Bottom conflicts with written risk limits.
Common pitfalls
- Treating Double Bottom as a guaranteed reversal signal.
- Optimising parameters on one bullish month only.
- Trading against higher-timeframe bias because Double Bottom “said so”.
- Failing to log when you overrode Double Bottom discretionally.
How to use this in TradeLyser
Screenshot pattern at entry. Monthly stats for confirmed vs early entries.
Related terms
A breakout occurs when price closes beyond a boundary — range high, triangle, or prior day level — that traders were watching.
Cup and handle forms a rounded base (cup) and a shallow pullback (handle) before continuation. Breakout above handle resistance is the classic entry.
A head and shoulders pattern shows a peak, higher peak, and lower peak with a neckline. A break below the neckline signals potential trend reversal.
Support is a price area where demand previously stepped in, slowing or reversing declines. It is a zone — not a single tick — and can fail.
FAQ
How do you confirm a double bottom pattern?
A double bottom is confirmed only when price closes above the neckline — the peak formed between the two troughs — on a daily or higher timeframe. An intraday spike above the neckline that closes below it does not count as confirmation.
How far apart should the two bottoms be in a double bottom?
The two troughs should be within 3–5% of each other in price. A second bottom that is significantly lower than the first invalidates the pattern — that is a lower-low continuation, not a reversal signal.
What is the price target for a double bottom?
The measured move target is calculated as the neckline price plus the distance from the neckline to the bottom. For example, if the neckline is at $168 and the bottom is at $150, the target is $168 + $18 = $186.
What does volume tell you about a double bottom?
Ideal volume behavior shows declining volume on the second trough — indicating less selling pressure — and rising volume on the neckline breakout. A second bottom formed on unusually low volume without a capitulation spike increases failure risk.
How reliable is the double bottom pattern?
According to Thomas Bulkowski's research in Encyclopedia of Chart Patterns, the double bottom has a 64% breakout success rate after confirmation, with an average post-confirmation gain of approximately 35% in bull market conditions.
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