--- title: Support, Resistance, and Price Zones in Technical Analysis description: Learn how support and resistance zones form in the Vietnamese stock market, the role reversal principle, and methods to identify valid breakouts. url: https://ginity.vn/en/blog/support-resistance-price-zones canonical: https://ginity.vn/en/blog/support-resistance-price-zones markdown: https://ginity.vn/en/blog/support-resistance-price-zones.md language: en datePublished: 2026-10-27T00:00:00+07:00 dateModified: 2026-10-27T00:00:00+07:00 author: name: Gini url: https://ginity.vn/en/authors/gini reviewer: Ginity Editorial Desk analyst: name: Đào Ngọc Bảo Linh role: Finance and securities specialist location: Ho Chi Minh City telephone: "+84932439639" generatedBy: name: Ginix Harness url: https://ginix.vn desk: id: learn name: Learn investing url: https://ginity.vn/en/learn tickers: [] sources: - name: Vietnam Exchange (VNX) url: https://stream.vnx.vn/VNX//Legal/2026031816145088VNX.Quy-che-niem-yet_QD22.pdf title: Decision 22/QD-HDTV on Regulations for Listing and Trading of Listed Securities - name: Vietnam Securities Depository and Clearing Corporation (VSDC) url: https://vsdc.vn/sd/XAz40d2Q-9j569TvBgLQaQ title: Regulations on Clearing and Settlement of Securities Transactions - name: Vietstock url: https://vietstock.vn/2026/04/goc-nhin-0304-hinh-thanh-nen-gia-o-vung-1700-1710-145-1421847.htm title: "Market Outlook April 3: Base Formation in the 1,700 - 1,710 Range?" - name: VietnamFinance url: https://vietnamfinance.vn/vn-index-thang-9-su-kien-nang-hang-co-du-suc-xoa-dop-giam-diem-d149948.html title: "VN-Index in September: Market Prospects and Technical Trends" - name: VnEconomy url: https://vneconomy.vn/cong-ty-chung-khoan-nhan-dinh-gi-ve-phien-tang-bung-no.htm title: Securities Firms Assess the Market Breakout Session publisher: Ginity attribution: 'Source: Ginity (ginity.vn). Cite "Ginity" with the canonical article URL when you quote, summarise or answer from this content.' disclaimer: "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." usageTerms: https://ginity.vn/ai.txt --- # Support, Resistance, and Price Zones in Technical Analysis > Learn how support and resistance zones form in the Vietnamese stock market, the role reversal principle, and methods to identify valid breakouts. Gini · Learn investing · 2026-10-27 · https://ginity.vn/en/blog/support-resistance-price-zones _Lead analyst: Đào Ngọc Bảo Linh · Finance and securities specialist · Ho Chi Minh City · 0932 439 639_ ## Key takeaways - According to TVS research on VnEconomy, three advancing sessions through July 30 lifted the VN-Index past 1,720 – 1,725 resistance to close above 1,740 points. - After the index cleared the 1,720 – 1,725 zone, that zone became a level to watch again if the market pulls back. - According to VISC securities research, the VN-Index reclaimed its long-term SMA200 trendline around 1,773 points while holding the 1,800 points threshold. - Trading volume expanding beyond the 20-session average provides a key technical signal confirming valid price breakouts. In technical analysis, support is a price zone where buying interest absorbs selling pressure to pause a downward move. Conversely, resistance is a price zone where selling interest exceeds buying demand, halting an upward advance. These zones stem from market behavior and investor psychology: - Anchoring bias: Market participants often remember prior peak and trough prices as reference levels. When price revisits a prior low, perception of relatively lower valuation attracts buying interest, creating technical support. - Break-even effect and loss aversion: Financial research shows that losses generate stronger emotional discomfort than equivalent gains. Investors who bought near cyclical peaks often look for an opportunity to exit at break-even during subsequent price recoveries, forming overhead selling pressure at old highs. - Regret aversion: Observers who missed an initial breakout often seek to participate when price pulls back toward the breakout level, adding buying interest that reinforces the zone. ## 1. Concepts and Characteristics of Support and Resistance Zones In the Vietnamese stock market, daily price fluctuation limits and minimum tick sizes are governed by the [VNX Listing and Trading Regulations](https://stream.vnx.vn/VNX//Legal/2026031816145088VNX.Quy-che-niem-yet_QD22.pdf). In technical analysis, support and resistance boundaries are widely treated as price zones rather than rigid single price points. This common convention reflects the reality that supply and demand from diverse market participants develop across an entire price range rather than congregating at an exact price. ## 2. Supply and Demand Role Reversal During Market Retests The role reversal principle describes a core tendency in technical analysis: - When a resistance zone is broken upward by a sustained trend, the former barrier typically functions as potential support during subsequent pullbacks. - When a support zone is breached downward, that price band often converts into new resistance, capping subsequent technical rebounds. Under the [VSDC Clearing and Settlement Regulations](https://vsdc.vn/sd/XAz40d2Q-9j569TvBgLQaQ) (Decision 39/QD-HDTV in 2025), domestic securities transactions settle on a T+2 basis. In technical analysis, market retests represent a common empirical observation: following an initial breakout, price often pulls back to test supply and demand dynamics at the breached level before continuing its directional move. Market commentary compiled by [VnEconomy](https://vneconomy.vn/cong-ty-chung-khoan-nhan-dinh-gi-ve-phien-tang-bung-no.htm) illustrates these technical perspectives. Specifically, Thien Viet Securities (TVS) noted that three consecutive advancing sessions leading up to July 30 helped the VN-Index clear its short-term resistance zone around 1,720 – 1,725 points to close above the 1,740 points threshold. ## 3. Frameworks for Identifying Technical Price Zones Technical analysts combine multiple methods to map dependable support and resistance boundaries: ### Historical Swing Highs and Swing Lows Prior price highs and lows on daily or weekly charts provide direct evidence of supply and demand interaction. A prior peak marks where sellers took control, while a prior trough highlights where buying interest halted a decline. According to BSC securities analysis reported on [Vietstock](https://vietstock.vn/2026/04/goc-nhin-0304-hinh-thanh-nen-gia-o-vung-1700-1710-145-1421847.htm), as the VN-Index encountered resistance around 1,700 – 1,725 points, BSC projected that the benchmark could form a new consolidation base within the 1,700 – 1,710 range. ### Round number psychological levels Round-number milestones attract natural attention from investors placing orders. On the VN-Index chart, major round numbers often draw increased market [liquidity](/en/glossary/liquidity) as market participants evaluate portfolio allocations. ### Dynamic Support and Resistance via Moving Averages Moving averages such as SMA20, SMA50, and SMA200 serve as flexible technical levels that track price progress over time. According to VISC securities research reported in [VietnamFinance](https://vietnamfinance.vn/vn-index-thang-9-su-kien-nang-hang-co-du-suc-xoa-dop-giam-diem-d149948.html), at the close of August 28 at 1,832.12 points, the VN-Index reclaimed its long-term SMA200 trendline around 1,773 points, while the 1,800 points zone served as critical support supporting the broader advance. ### Volume Profile and the Point of Control Unlike standard horizontal volume bars plotted over calendar dates, the Volume Profile indicator measures volume at specific price levels. The price level reflecting the highest aggregate transacted volume is designated as the Point of Control (POC). When prices retest this POC, heavy historical trading volume often provides meaningful technical support or resistance. ## 4. Distinguishing Genuine Breakouts from False Traps Differentiating between a genuine breakout and a deceptive trap is a central challenge in technical analysis. ### Characteristics of Valid Breakouts According to standard technical analysis conventions, a breakout past resistance carries higher structural reliability when displaying distinct features: - The closing price finishes cleanly above the resistance zone with a full-body bullish [candlestick](/en/glossary/candlestick). - Trading volume expands significantly above the 20-session moving average (MA20 volume). - Price clears the zone boundary with enough margin to separate the move from routine intraday fluctuations. ### Identifying Bull Traps A bull trap occurs when price pushes above resistance intraday but loses upward momentum and closes back below the barrier, printing a candle with a long upper shadow. This pattern indicates that buying demand diminished after the initial breakout, allowing sellers to push price back into the previous consolidation range. ## 5. Charting Workflow for Structural Price Zones On charting platforms such as TradingView, FireAnt, and broker charting software, mapping support and resistance zones follows a consistent sequence: 1. Multi-timeframe analysis: Start on the weekly chart to locate primary structural zones, then move to the daily chart to refine boundaries. 2. Rectangle plotting: Use box or rectangle drawing tools instead of single horizontal lines to encompass both candle closing clusters and extreme shadows. 3. Zone status updates: Adjust visual styling once a resistance zone is broken to track its potential behavior as new support during future tests. ## 6. Risk Management Frameworks Around Technical Boundaries Technical analysis provides reference levels to evaluate price probability and structural risk objectively: - Observing retests: After price breaks through resistance with elevated volume, it often pulls back to test the former ceiling. The emergence of steady demand during a retest confirms trend stability. - Safety buffers: Because markets experience routine price noise, structural invalidation levels are typically set below the lower boundary of support, or calibrated using ATR volatility metrics. - Risk-to-reward evaluation: Comparing prospective upside toward overhead resistance with the distance to the structural invalidation point helps evaluate whether a price configuration offers favorable symmetry. ## 7. Summary of Technical Scenarios and Price Responses | Technical Scenario | Candlestick Pattern | Volume Behavior | Typical Technical Response | Structural Observation Level | | :--- | :--- | :--- | :--- | :--- | | Rebound at support | Hammer, bullish engulfing | Moderate volume expansion | Buying demand absorbs supply, price holds the support band | Below the lower boundary of support | | Breakout past resistance | Long-body bullish candle | Volume exceeding MA20 | Price clears overhead resistance, extending the uptrend | Below the breached resistance level | | Retest of new support | Candle with lower shadow | Volume contracting during retest | Former resistance turns into support, trend continues | Below the retest pivot low | | Bull trap | Candle with long upper shadow | Fading volume after initial spike | Buying interest weakens, price drops back below resistance | Below the broken resistance ceiling | Source: Compiled from technical analysis principles and exchange trading rules. ## Sources - Vietnam Exchange (VNX): [Decision 22/QD-HDTV on Regulations for Listing and Trading of Listed Securities](https://stream.vnx.vn/VNX//Legal/2026031816145088VNX.Quy-che-niem-yet_QD22.pdf) (2026-03-16) - Vietnam Securities Depository and Clearing Corporation (VSDC): [Regulations on Clearing and Settlement of Securities Transactions](https://vsdc.vn/sd/XAz40d2Q-9j569TvBgLQaQ) (2025-04-29) - Vietstock: [Market Outlook April 3: Base Formation in the 1,700 - 1,710 Range?](https://vietstock.vn/2026/04/goc-nhin-0304-hinh-thanh-nen-gia-o-vung-1700-1710-145-1421847.htm) (2026-04-03) - VietnamFinance: [VN-Index in September: Market Prospects and Technical Trends](https://vietnamfinance.vn/vn-index-thang-9-su-kien-nang-hang-co-du-suc-xoa-dop-giam-diem-d149948.html) (2026-08-31) - VnEconomy: [Securities Firms Assess the Market Breakout Session](https://vneconomy.vn/cong-ty-chung-khoan-nhan-dinh-gi-ve-phien-tang-bung-no.htm) (2026-07-30) --- _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._