VN Pullback Methodology

Last updated: 2026-05-13

Why pullback entries?

Pullback entries are a lower-risk alternative to breakout entries:

Aspect	Breakout entry	Pullback entry
Where you buy	At the pivot (recent high)	At a support test (lower than recent high)
Stop distance	5-7% from pivot	2-5% from MA20 / MA50
Risk per share	Higher	Lower
Hit rate	Lower (many false breakouts)	Higher (uptrend resumption common)
T+2.5 fit	Tight — must catch intraday	Loose — can wait for confirmation

For Vietnam swing traders constrained by T+2.5, pullbacks are particularly attractive because you don't need intraday execution.

The healthy pullback profile

1. Long-term uptrend must remain intact

Before considering a pullback, the long-term trend must be unambiguously up:

• Price > MA200 — primary uptrend marker
• MA50 > MA200 — confirmed intermediate trend
• MA200 sloping up — long-term direction. Check MA200 today vs MA200 one month ago: should be higher.

If MA200 is sloping down or flat, what looks like a pullback is more likely a topping pattern. Skip.

2. Pullback magnitude: 3-12%

Measure from the 20-day high (recent peak) to the current close:

• < 3%: too shallow — no real pullback yet
• 3-7%: normal pullback to MA20 area
• 7-12%: deeper pullback, likely testing MA50
• > 12%: large drawdown — could be reversal, not pullback

For VN's ±7% band, even a single-session 7% drop is dramatic. So pullbacks usually unfold over 3-10 sessions.

3. Support test

A genuine pullback should test a known support:

• MA20 test: distance to MA20 < 3% (price within 3% above or 1% below MA20)
• MA50 test: distance to MA50 < 5% (price within 5% of MA50)

If the pullback overshoots MA50 by more than 5%, it's no longer a "test" — it may be a fail.

4. RSI sweet spot: 35-50

RSI(14) values during a healthy pullback:

• < 30: oversold — could be panic selling, not orderly pullback
• 30-35: at the edge — needs other confirmation
• 35-50: sweet spot for pullback entries
• 50-60: pullback is shallow or already recovering
• > 60: not pulled back enough to call this a pullback

5. Volume dry-up at the pullback low

A healthy pullback shows decreasing volume as price falls toward support:

• Volume on the down days should be lower than the rally volume
• Volume at the trough should be ≤ 85% of MA50 volume
• A volume spike at the low is suspicious — could be capitulation, but more often institutional distribution

VN-specific tweaks

Adjusted pullback bounds

For HOSE blue-chips (typical):

• Pullback range: 3-10% is the sweet spot

• 10% pullback in a single week suggests trend change

For HNX and mid-caps:

• Pullback range: 5-15% (more natural volatility)

Floor price interaction

The ±7% daily floor means a stock can hit the daily floor (-7%) only once per session. If you see 2-3 consecutive floor sessions, this is not a healthy pullback — that's a panic / news event. Skip and re-evaluate after the dust settles.

Foreign room context

Pullbacks combined with foreign net buying are particularly bullish:

• Use vn-foreign-room-tracker to check if foreign accumulation is happening during the pullback
• Pullback + foreign buying = institutional accumulation signal

Sector context

Pullbacks in leading sectors recover; pullbacks in lagging sectors often deepen:

• Pair with vn-sector-analyst RS_20D > 0 filter
• If sector is in "deteriorating" or "falling" signal → skip the pullback

Scoring

5 components, 25 / 20 / 20 / 20 / 15 → total 100.

Long-term uptrend (25)

Condition	Points
Price > MA200, MA50 > MA200, MA200 slope > +1% per month	25
Price > MA200, MA50 > MA200, MA200 slope > 0	18
Price > MA200, MA50 > MA200, MA200 flat	10
Else	0

Pullback magnitude (20)

Pullback % from 20D high	Points
4-8	20
3-4 or 8-10	15
10-12	10
Else	0

Support test (20)

Condition	Points
Distance to MA20 < 3% AND price > MA20	20
Distance to MA50 < 5% AND price > MA50	15
Distance to MA50 < 8% AND price > MA50	8
Else	0

RSI sweet spot (20)

RSI(14)	Points
38-48	20
35-38 or 48-52	14
30-35 or 52-55	8
Else	0

Volume dry-up (15)

Vol at low / MA50 vol	Points
≤ 0.70	15
0.70-0.85	10
0.85-1.0	5
> 1.0	0

Entry, stop, target

Entry

Place a buy limit at:

• MA20 + 0.5% (or current price if already at MA20)
• For deeper pullback: midpoint between current and MA50

Stop

Stop loss at:

• Pullback low × 0.97 (3% below recent low), OR
• MA50 × 0.97 (3% below MA50), OR
• Pivot from before pullback × 0.93 (7% below pre-pullback peak)

Use the highest of these three (tightest stop that still gives the trade room).

Target

R-multiple based:

• T1: 1R (cover risk)
• T2: 2R (typical pullback rally)
• T3: revisit previous high + breakout extension

Common pullback failure modes

Failure	Recognition	Action
Pullback turns to reversal	Price breaks below MA50 with volume	Exit on close below MA50
Fake bottom	Pullback "ends" but new low arrives within 5 sessions	Re-evaluate; may not be ready
News-driven gap down	Overnight gap takes out stop	Accept loss, don't re-enter same day
Sector failure	Sector RS_20D drops below -1	Cut size 50% or exit

Defaults

Parameter	Default	Reason
--min-pullback-pct	3	Below this, no real pullback
--max-pullback-pct	12	Above this, likely reversal
--rsi-low	35	Lower bound of sweet spot
--rsi-high	50	Upper bound
--max-distance-ma20-pct	3	MA20 test threshold
--max-distance-ma50-pct	5	MA50 test threshold
--volume-dryup-threshold	0.85	Healthy pullback volume