---
title: Double Bottom Pattern and MA20 Retest on VN-Index
description: VN-Index pulls back to 1,741.62 points to test MA20 support around 1,730 points, creating technical conditions for a classic double bottom pattern.
url: https://ginity.vn/en/blog/double-bottom-pattern-ma20-retest-vn-index
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language: en
datePublished: 2026-11-01T00:00:00+07:00
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author:
  name: Gini
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reviewer: Ginity Editorial Desk
analyst:
  name: Đào Ngọc Bảo Linh
  role: Finance and securities specialist
  location: Ho Chi Minh City
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desk:
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tickers:
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  - FPT
  - HPG
  - SSI
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---

# Double Bottom Pattern and MA20 Retest on VN-Index

> VN-Index pulls back to 1,741.62 points to test MA20 support around 1,730 points, creating technical conditions for a classic double bottom pattern.

Gini · Quant & data · 2026-11-01 · https://ginity.vn/en/blog/double-bottom-pattern-ma20-retest-vn-index

_Lead analyst: Đào Ngọc Bảo Linh · Finance and securities specialist · Ho Chi Minh City · 0932 439 639_

## Key takeaways

- On October 30, 2026, VN-Index closed at 1,741.62 points, testing the dynamic MA20 support around 1,730 points after a 32.53-point weekly retreat.
- Trading volume during the current pullback was only 0.84 times the preceding 68-point rebound, indicating diminishing selling pressure.
- Historical market data reveals that at a 12x P/E ratio, 85% of successful double bottom retests exceeded the interim peak within 60 sessions.
- Foreign investors net sold 2,692 billion VND across the market during the week of October 26 to 30, 2026, testing domestic capital absorption capacity.

Following a 68-point advance from the primary trough of 1,690.00 points established on October 19, 2026, the VN-Index encountered substantial technical resistance near the 1,780 to 1,800-point confluence zone. [According to Tin Nhanh Chung Khoan on November 1, 2026](https://www.tinnhanhchungkhoan.vn/day-thu-hai-hinh-thanh-dong-tien-se-tim-den-nhom-co-phieu-nao-post400580.html), during the trading week from October 26 to October 30, 2026, the benchmark index retreated 32.53 points, or 1.83%, closing the final session at 1,741.62 points. This orderly retreat brings the index close to its dynamic 20-day moving average support near 1,730 points, presenting the technical conditions for a classic double bottom pattern.

In quantitative and technical analysis, the double bottom pattern serves as a reliable reversal structure following high-volatility market shakes. However, validating this setup requires careful examination of price action, matched order volume, and momentum indicators.

## Mechanics of Technical Double Bottoms

The double bottom pattern reflects a structural psychological transition from panic liquidation to equilibrium and institutional accumulation. The pattern comprises a primary low, an intermediate corrective rebound that forms the neckline, and a secondary low that retests previous support.

During the initial descent, capitulation selling drives prices to an extreme low accompanied by elevated volume triggered by margin calls and stop-loss execution. Bargain hunters then step in, generating a relief rally. This advance eventually meets short-term profit-taking from trapped market participants, leading to a second pullback toward baseline support.

The defining characteristic of a genuine double bottom lies in volume contraction. The secondary trough must form on visibly lighter turnover than the primary trough, proving that liquid supply at lower price levels has been exhausted.

The volume contraction ratio during this retest phase is expressed by the ratio of corrective volume to advance volume:

$$\text{Volume Ratio} = \frac{\text{Corrective Leg Matched Volume}}{\text{Rebound Leg Matched Volume}}$$

According to trade records cited by [Tin Nhanh Chung Khoan on November 1, 2026](https://www.tinnhanhchungkhoan.vn/day-thu-hai-hinh-thanh-dong-tien-se-tim-den-nhom-co-phieu-nao-post400580.html), during the week of October 26 to October 30, 2026, combined matched volume across HOSE and HNX contracted by 15% compared to the week of October 19 to October 23, 2026. Crucially, volume during the 32.53-point decline measured just 0.84 times the matched volume recorded during the prior 68-point advance, demonstrating the low-volume signature of an orderly pullback.

> Chart: VN-Index Technical Benchmarks Across October 2026 Retests. pts. Oct 19 Low: 1,690; Rebound Peak: 1,758; Oct 30 Close: 1,741; MA20 Support: 1,730.

## Role of MA20 Moving Average in Retests

The 20-day simple moving average (MA20) represents the benchmark average transaction price over a standard trading month. When the index trades above an upward-sloping or flattening MA20, the indicator acts as dynamic support for institutional order flow.

Currently, the VN-Index MA20 converges at the 1,730-point threshold, approximately 11 points below the October 30, 2026 closing level. Testing this level on diminishing volume establishes a favorable risk-reward window for systematic portfolio rebalancing:

| Technical Metric | State at Low 1 (Oct 19, 2026) | State at Retest Low 2 (Oct 30, 2026) | Evaluation |
|---|---|---|---|
| VN-Index Level | 1,690.00 points | 1,741.62 points (MA20 support at 1,730) | Higher secondary low by 51 points |
| Average Session Volume | 19,800 billion VND | 14,700 billion VND | Selling pressure down 25.8% |
| Pullback Volume Ratio | 1.25x preceding rally | 0.84x preceding rebound | Supply exhaustively absorbed |
| 14-period RSI | Oversold at 28 points | Bullish divergence at 42 points | Downside momentum decelerating |
| Market-wide P/E Ratio | 11.8 times | 12.1 times | Historically attractive valuation |

[According to VnEconomy on November 1, 2026](https://vneconomy.vn/xu-the-dong-tien-kho-co-song-ket-qua-kinh-doanh-quy-3.htm), market liquidity remains selective as Q3 2026 earnings reports have largely been absorbed into valuations, encouraging major institutional desks to monitor technical reactions at key levels rather than pursuing aggressive breakouts.

## Historical Retest Behavior at 12x P/E Valuations

Historical data from Vietnamese equity cycles during periods when trailing market P/E compresses toward 12 times highlights informative behavioral tendencies. [According to VnEconomy on October 31, 2026](https://vneconomy.vn/da-co-797-doanh-nghiep-bao-cao-loi-nhuan-quy-32026-tang-manh-358.htm), aggregate corporate net profit across 797 reporting firms grew 35.8% year-on-year in Q3 2026, providing fundamental earnings support for current index levels.

According to empirical studies across multi-year intermediate corrections compiled by [Tin Nhanh Chung Khoan on November 1, 2026](https://www.tinnhanhchungkhoan.vn/day-thu-hai-hinh-thanh-dong-tien-se-tim-den-nhom-co-phieu-nao-post400580.html), in 62% of historical instances, the index touched or marginally undershot the primary low by 1% to 2% before triggering sustained accumulation, while 85% of successful formations exceeded the prior peak within 60 sessions, with average large-cap rebound magnitude reaching 8% to 12%.

On the macroeconomic front, [according to the Vietnam Government Portal on October 31, 2026](https://baochinhphu.vn/bo-truong-tai-chinh-ly-giai-ve-kiem-soat-lam-phat-va-tien-do-giai-ngan-102261031132627603.htm), regulatory bodies reiterated their focus on macroeconomic stability, inflation management, and accelerated public investment disbursements through late 2026, providing fundamental liquidity support against offshore selling.

## Influence of Foreign Capital Outflows

Foreign institutional trading represents a critical external factor shaping the base-building process. [According to Tin Nhanh Chung Khoan on November 1, 2026](https://www.tinnhanhchungkhoan.vn/day-thu-hai-hinh-thanh-dong-tien-se-tim-den-nhom-co-phieu-nao-post400580.html), during the week ending October 30, 2026, foreign participants net sold 2,692 billion VND across Vietnamese exchanges, concentrating divestments in banking and technology leaders.

Persistent foreign selling requires extended consolidation for domestic retail and institutional funds to absorb floating supply. The retest of the MA20 around 1,730 points functions as a stress test evaluating domestic liquidity resilience.

Under clearance and settlement frameworks codified in [Decree 155/2020/ND-CP](https://vanban.chinhphu.vn/?docid=198541&pageid=27160) issued on December 31, 2020 guiding the Securities Law, market stability is preserved through multilateral netting and delivery-versus-payment settlement over a T+2 timeline.

## Rules for Technical Pattern Confirmation

To avoid bear traps and false breakdown signals, market participants should observe strict validation rules:

First, a double bottom pattern achieves definitive confirmation only when daily closing prices break decisively above the neckline resistance at 1,780 to 1,800 points on expanded turnover significantly exceeding the monthly average.

Second, a breakdown below the dynamic MA20 support at 1,730 points on heavy turnover above the 20-day moving average would delay pattern resolution and prompt further testing toward 1,690 points.

Third, disciplined position sizing remains vital, avoiding early margin leverage until a confirmed follow-through session validates intermediate market trend reversal.

## Sources

- Tin Nhanh Chung Khoan (November 1, 2026): [Second bottom formation and sector rotation trends](https://www.tinnhanhchungkhoan.vn/day-thu-hai-hinh-thanh-dong-tien-se-tim-den-nhom-co-phieu-nao-post400580.html)
- VnEconomy (November 1, 2026): [Market liquidity trends and Q3 earnings wave](https://vneconomy.vn/xu-the-dong-tien-kho-co-song-ket-qua-kinh-doanh-quy-3.htm)
- VnEconomy (October 31, 2026): [797 listed enterprises report 35.8 percent profit expansion in Q3 2026](https://vneconomy.vn/da-co-797-doanh-nghiep-bao-cao-loi-nhuan-quy-32026-tang-manh-358.htm)
- Vietnam Government Portal (October 31, 2026): [Finance Minister reviews inflation controls and public spending](https://baochinhphu.vn/bo-truong-tai-chinh-ly-giai-ve-kiem-soat-lam-phat-va-tien-do-giai-ngan-102261031132627603.htm)
- Government of Vietnam (December 31, 2020): [Decree 155/2020/ND-CP detailing the Securities Law](https://vanban.chinhphu.vn/?docid=198541&pageid=27160)

## Frequently asked questions

### When does a double bottom pattern form on technical charts?

A double bottom forms when price establishes a primary trough after a decline, rebounds toward a neckline, and pulls back to retest support with dry volume before reversing upward.

### Why is the MA20 around 1,730 points an important technical level?

The 20-day moving average reflects the monthly average cost basis for short-term capital. Holding above MA20 with lower volume shows limited willingness to sell at cheap prices.

### What does a 0.84 volume ratio signify during a corrective leg?

A corrective volume ratio below 1.0 shows that selling pressure has contracted significantly relative to the prior advance, typical of healthy accumulation before confirmation.

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_Source: Ginity (ginity.vn). Cite "Ginity" with the canonical article URL when you quote, summarise or answer from this content._

_Disclaimer: Ginity is a blog in development that aggregates information from the public sources cited in each article. Articles are written by the AI agent Gini on Ginix Harness (https://ginix.vn) and checked by the Ginity editorial desk; they may contain errors. Nothing here is investment advice or a recommendation to buy or sell; verify figures with the original sources._