Skip to content

Learn · Zone patterns

Rally Base Drop (RBD): How to Spot, Mark and Use the Reversal Supply Zone

Rally base drop (RBD) is a green leg in, a 1 to 6 candle base and a red leg out. Learn to spot it, mark proximal and distal lines, and use it to plan exits.

Zone patternsIntermediate6 min readLesson 05 of 17

Short answer

What is a rally base drop pattern?

A rally base drop (RBD) is a reversal supply zone: price rises with a strong green candle, stalls in 1 to 6 small indecisive candles, then falls away with a strong red candle. The stall is where large sellers placed orders that could not all be filled, so price often meets supply when it rallies back to that base.

StockNotify Editorial Team Published Reviewed
Rally-Base-Drop (RBD) supply zoneIllustrative prices
ProximalDistalRBD supply zoneLeg inBaseLeg outProximalDistalRBD supply zoneLeg inBaseLeg outProximalDistalRBD supply zoneLeg inBaseLeg outProximalDistalRBD supply zoneLeg inBaseLeg out

Price rallies into a short base and drops out. The supply zone spans the base from its lowest body to its highest wick.

RBD: a green leg in, a short base, then a red leg out. The supply zone runs from the lowest base body to the highest base wick.

Key takeaways

  • RBD has three parts: a green exciting leg-in candle, a base of 1 to 6 base candles and a red exciting leg-out candle.
  • It is a reversal pattern, because the move turns from up to down, so it is usually ranked ahead of a drop base drop when two supply zones compete.
  • Mark the zone body to wick: the proximal line at the lowest base body and the distal line at the highest base wick.
  • RBD's exception uses the leg-in candle: if the green leg-in's upper wick rises above the base, the distal line can move up to that wick.
  • A valid RBD needs good closing: one of the first three leg-out candles must close below the low of the green leg-in candle.
  • Swing traders in Indian cash stocks mostly use an RBD to plan exits and avoid fresh buys, because a short sale in the cash segment must be closed the same day.

What is a rally base drop (RBD) pattern?

A rally base drop is one of the four demand and supply zone patterns and the mirror image of a drop base rally. Price rallies with a green exciting candle, stalls in a short base of indecisive candles, and then drops with a red exciting candle. The rally shows buyers in control. The base is where large sellers began distributing. The drop shows that sellers won and that some of their orders were left unfilled when price fell away.

The three parts of a rally base drop
PartCandle typeWhat it tells you
Leg in (rally)Green exciting candle: body more than 50% of its rangeBuyers were in control as price arrived
Base1 to 6 base candles: wicks more than 50% of their range, any colourBuyers and sellers were roughly balanced while large sell orders were placed
Leg out (drop)Red exciting candle, ideally largeSellers overwhelmed buyers and left pending orders behind

Because the move turns from up to down, RBD is a reversal supply pattern. Its continuation cousin is the drop base drop (DBD), where price was already falling before the base. Both create supply zones and use the same normal marking.

How do you identify a rally base drop on a chart?

Start from the current price and look left and up for a strong red candle; the leg out is the easiest part of an RBD to see. Then confirm the rest of the structure working backwards from it.

  1. Draw a horizontal line at the current market price on the timeframe you trade.
  2. Look left and above it for an explosive red candle with a body larger than half its range.
  3. Step back from that candle and count the base: 1 to 6 candles whose wicks are larger than their bodies.
  4. Check the candle before the base: it must be a green exciting candle. If it is red, the pattern is a DBD instead.
  5. Confirm good closing: within the first three leg-out candles, one must close below the low of the green leg-in candle.
  6. Check freshness: no later candle body has entered the base, and the zone has not produced a second leg out.

How do you mark an RBD supply zone?

Mark every RBD body to wick. The proximal line, the edge nearest the current price, goes at the lowest candle body inside the base. The distal line, the far edge, goes at the highest wick inside the base. For a short trade the proximal line is the entry reference and the distal line is the stop-loss reference; for a long position you already hold, the proximal line is where you plan the exit.

Is a rally base drop stronger than a drop base drop?

Usually yes, as a tie-breaker. An RBD marks the point where a rising market turned, so the sellers there had to absorb an active wave of buying. Pattern type is still only one factor: a fresh DBD with a one-candle base and a large leg out can matter more than a tested RBD with a long base.

Rally base drop vs drop base drop
FeatureRally base drop (RBD)Drop base drop (DBD)
Leg inGreen exciting candleRed exciting candle
Leg outRed exciting candleRed exciting candle
TypeReversalContinuation
Where it appearsAt the top of a riseIn the middle of a downtrend
Normal markingLowest base body to highest base wickSame
Exceptional markingLeg-in upper wick can raise the distal lineLeg-out upper wick can raise the distal line
Priority when zones competeHigherLower

How do you use a rally base drop in Indian stocks?

In the Indian cash segment a short sale must be squared off on the same day, so swing and positional traders mostly use an RBD in three ways rather than holding shorts.

  • Plan exits: if you hold the stock, a fresh RBD above is a natural target area, because sellers may be waiting there.
  • Filter new buys: a demand-zone buy only qualifies when the nearest RBD sits at least twice the risk above entry. If supply is closer, the 1:2 target does not fit.
  • Short trades through derivatives or intraday: traders who do short use futures, options or intraday positions, with entry just below the proximal line and the stop-loss just above the distal line.
Minimum 1:2 target for a short from an RBDTarget = Entry − 2 × (Stop-loss − Entry)

What are the common mistakes with rally base drop zones?

  • Calling any pullback an RBD: without a green exciting leg in and a red exciting leg out, it is not the pattern.
  • Using the leg-out wick for the exception: RBD's exceptional distal comes from the leg-in candle.
  • Skipping the good-closing check: a drop that never closes below the leg-in low shows sellers did not take control.
  • Buying just under a fresh RBD: the reward to the supply zone is usually too small for 1:2.
  • Holding a cash-market short overnight: it is not allowed for a regular cash-segment short sale; plan it as intraday or use derivatives.
  • Treating a tested RBD as fresh: part of the supply was filled on the earlier visit.

Frequently asked questions

Is a rally base drop bearish?

Yes. A rally base drop creates a supply zone, so traders treat it as a bearish area where a rally may stall or reverse. It is not a signal on its own: strong buying can break through, and a close above the distal line invalidates the zone.

What is the difference between RBD and DBR?

They are mirror images. DBR is a drop, a base and a rally, and creates a demand zone below price. RBD is a rally, a base and a drop, and creates a supply zone above price. Both are reversal patterns, but DBR's exceptional marking uses the leg-out wick while RBD's uses the leg-in wick.

How many base candles can an RBD have?

Between one and six. Fewer base candles usually mean a stronger zone. With seven or more the area is treated as a range rather than a tradeable supply zone.

Can I short a stock from an RBD and hold it for days?

Not in the regular cash segment, where a short sale has to be closed the same trading day. Traders who want to hold a short position for longer use stock futures or options, which carry their own margin and risks.

How StockNotify applies this

StockNotify labels rally base drop zones RBD on its charts and in the free Nifty 100 supply zone scan, with the proximal line at the lowest base body, the distal line at the highest wick and a score out of 7. Save an alert at an RBD proximal line and StockNotify notifies you on Telegram or email when price rallies into the zone.

Educational content only. Nothing here is investment advice or a recommendation to buy or sell any security. Chart diagrams use illustrative prices, not market data. Trading involves risk of loss; verify prices independently and apply your own risk process.

Set your first price alert
in two minutes.

Sign up free, pick a stock, set a price. We’ll message you when it gets there.

Get started freeFree during beta. See what’s included