--- title: Using Fibonacci Retracement for VN-Index Support Levels description: Learn how to apply Fibonacci retracement in stock trading to identify technical support levels for the VN-Index during late 2026. url: https://ginity.vn/en/blog/using-fibonacci-retracement-for-vn-index-support-levels canonical: https://ginity.vn/en/blog/using-fibonacci-retracement-for-vn-index-support-levels markdown: https://ginity.vn/en/blog/using-fibonacci-retracement-for-vn-index-support-levels.md language: en datePublished: 2026-10-31T00:00:00+07:00 dateModified: 2026-10-31T00:00:00+07:00 author: name: Gini url: https://ginity.vn/en/authors/gini reviewer: Ban biên tập Ginity 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: [] 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 --- # Using Fibonacci Retracement for VN-Index Support Levels > Learn how to apply Fibonacci retracement in stock trading to identify technical support levels for the VN-Index during late 2026. Gini · Learn investing · 2026-10-31 · https://ginity.vn/en/blog/using-fibonacci-retracement-for-vn-index-support-levels _Lead analyst: Đào Ngọc Bảo Linh · Finance and securities specialist · Ho Chi Minh City · 0932 439 639_ ## Key takeaways - Fibonacci retracement measures 4 primary ratios including 23.6%, 38.2%, 50.0%, and 61.8% to identify potential technical support zones. - The VN-Index settled at 1,741.62 points on October 30, 2026 during a market corrective phase. - Applying Fibonacci retracement requires selecting swing anchor points, tracking 20-day and 50-day moving averages, and waiting for volume confirmation. Fibonacci retracement is a popular technical analysis tool used to find potential support and resistance levels. In an uptrend, stock prices rarely rise in a straight line. Instead, the market often pulls back to test earlier gains. Identifying potential support areas helps investors understand market structure during pullbacks. To see how this works in practice, investors can review [how the VN-Index is calculated](/en/blog/vn-index-vn30-index-calculation) alongside mathematical tools. Retracement ratios provide clear benchmarks to observe buyer and seller behavior around key price zones. ## Determining Fibonacci Retracement Ratios The sequence starts with 0 and 1 according to classical number theory recorded in the [Fibonacci sequence A000045](https://oeis.org/A000045). Each subsequent number is the sum of the two preceding numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, and so on. Dividing any number by the next number approaches 61.8%. Dividing a number by the value two places ahead approaches 38.2%. The 23.6% ratio comes from dividing a number by the value three places ahead. Charting tools express these ratios as percentages of the prior upward swing according to technical analysis literature on [Fibonacci retracement](https://en.wikipedia.org/wiki/Fibonacci_retracement). The 50.0% level is not in the mathematical Fibonacci sequence, but charting tools include it as a halfway benchmark. The retracement formula in an uptrend is expressed as follows: $$\text{Retracement Price Level} = \text{Swing High Price} - \text{Retracement Ratio} \times (\text{Swing High Price} - \text{Swing Low Price})$$ These percentages provide technical reference levels to track price pullbacks on the chart. ```flow Step 1: Identify the Primary Trend Mark the swing low and swing high of the recent upward move on the chart. Step 2: Draw Retracement Levels Connect the swing low to the swing high to plot key support levels. Step 3: Monitor Price and Volume Reactions Observe candlestick patterns and trading volume as prices approach support levels. ``` ## VN-Index Market Consolidation in Late October 2026 In late October 2026, the Vietnamese stock market underwent a technical correction following earlier gains. The VN-Index closed at 1,741.62 points on October 30, 2026 according to reports from [Vietstock](https://vietstock.vn/2026/10/chung-khoan-tuan-26-30102026-no-luc-phuc-hoi-bat-thanh-1636-1509392.htm) and [VnEconomy](https://vneconomy.vn/dong-tien-bo-qua-dinh-gia-chuyen-gia-20-nam-kinh-nghiem-cung-phai-thua-nhan-vn-index-rat-kho-doan.htm) on October 30, 2026. Market trading operates under the legal framework established in [Luật Chứng khoán 54/2019/QH14](https://vanban.chinhphu.vn/?docid=198541&pageid=27160) enacted on November 26, 2019. Operational rules follow Circular No. 08/2026/TT-BTC issued by the [Ministry of Finance](https://ssc.gov.vn/cs/idcplg?IdcService=GET_FILE&allowInterrupt=1&dDocName=APPSSCGOVVN1620163868&dID=171953&filename=Circular+No+08.pdf) on February 2, 2026, which amends Circulars 96, 120, and 121/2020/TT-BTC. | Market Index | Trading Session | Closing Level | Data Sources | | :--- | :--- | :--- | :--- | | VN-Index | October 30, 2026 | 1,741.62 points | Vietstock and VnEconomy | *Source: Compiled from market reports on October 30, 2026 by Vietstock and VnEconomy.* ## Applying Fibonacci Retracement via Hypothetical Modeling To see how support levels are calculated, analysts can build a hypothetical model. The numbers in the example below represent a hypothetical educational model, not actual market levels or investment recommendations for the VN-Index. Assume an upward swing begins from a low at 1,600.00 points and reaches a high of 1,800.00 points, creating a 200.00-point swing. Applying common retracement ratios gives the following theoretical support levels: $$\text{Support Level 38.2\%} = 1800 - 38.2\% \times (1800 - 1600) = 1800 - 76.4 = 1723.6 \text{ points}$$ $$\text{Support Level 50.0\%} = 1800 - 50.0\% \times (1800 - 1600) = 1800 - 100.0 = 1700.0 \text{ points}$$ $$\text{Support Level 61.8\%} = 1800 - 61.8\% \times (1800 - 1600) = 1800 - 123.6 = 1676.4 \text{ points}$$ The 38.2% level at 1,723.6 points and the 50.0% level at 1,700.0 points act as rough reference points to track market movements according to this hypothetical calculation model. In practice, investors combine these mathematical levels with [support and resistance price zones](/en/blog/support-resistance-price-zones) from prior market swings to evaluate key technical levels. ## Candlestick Formations and Volume Dynamics at Key Levels Checking Fibonacci support levels requires watching candlestick patterns and trading volume. When an index pulls back to technical support, candlestick bodies and shadows offer clues about supply and demand. Narrow candle bodies or long lower shadows near support levels indicate that selling momentum is slowing down. Analysts often pair these chart patterns with the [RSI momentum indicator](/en/blog/rsi-indicator-divergence-and-momentum-zones) to see if a pullback has reached oversold levels. When buying volume increases around a support line, the market shows stronger evidence of price stability. ## Key Considerations When Applying Fibonacci Retracement Fibonacci retracement is a probabilistic measuring tool rather than a guarantee that prices will pause or reverse. According to [Wikipedia](https://en.wikipedia.org/wiki/Fibonacci_retracement), extensive backtests over thousands of stocks show that retracement values of 38%, 50%, and 62% are no likelier to appear than any other retracement values. Because these levels act as rough reference points rather than absolute barriers, the tool cannot guarantee that prices will stop or rebound at any specific ratio. Analysts avoid relying on isolated signals. Combining Fibonacci levels with 20-day and 50-day moving averages helps verify support areas alongside prior swing points. In addition, defining swing highs and lows requires precision because misplaced anchor points distort the calculation across the entire chart. Finally, volume confirmation remains essential, as support holds only when buying demand actively absorbs selling pressure. ## Sources - Integer Sequences Database: [Fibonacci Sequence A000045](https://oeis.org/A000045) (October 31, 2026) - Wikipedia: [Fibonacci retracement](https://en.wikipedia.org/wiki/Fibonacci_retracement) (October 31, 2026) - Vietstock: [Chứng khoán tuần 26-30/10/2026: Nỗ lực phục hồi bất thành](https://vietstock.vn/2026/10/chung-khoan-tuan-26-30102026-no-luc-phuc-hoi-bat-thanh-1636-1509392.htm) (October 30, 2026) - VnEconomy: [Dòng tiền bỏ qua định giá, chuyên gia 20 năm kinh nghiệm cũng phải thừa nhận VN-Index rất khó đoán](https://vneconomy.vn/dong-tien-bo-qua-dinh-gia-chuyen-gia-20-nam-kinh-nghiem-cung-phai-thua-nhan-vn-index-rat-kho-doan.htm) (October 30, 2026) - Government Portal: [Luật Chứng khoán 54/2019/QH14](https://vanban.chinhphu.vn/?docid=198541&pageid=27160) (November 26, 2019) - Ministry of Finance: [Circular No. 08/2026/TT-BTC amending Circulars 96, 120, and 121/2020/TT-BTC](https://ssc.gov.vn/cs/idcplg?IdcService=GET_FILE&allowInterrupt=1&dDocName=APPSSCGOVVN1620163868&dID=171953&filename=Circular+No+08.pdf) (February 2, 2026) *Disclaimer: Information in this article is for research and data synthesis purposes only, and does not constitute financial advice or investment recommendations. Please refer to our [Disclaimer](/en/legal/disclaimer) for details. Cover image: Illustrative AI image with watermark.* ## Frequently asked questions ### What is Fibonacci retracement in stock trading? Fibonacci retracement is a technical analysis method that uses mathematical ratios to identify potential support and resistance zones when prices pull back within an established trend. ### Which Fibonacci retracement levels are most widely tracked? The primary ratios include 23.6%, 38.2%, 50.0%, and 61.8%, to identify potential technical support levels. ### How did the VN-Index perform during late October 2026? The VN-Index closed at 1,741.62 points on October 30, 2026 as the market experienced a technical pullback. --- _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._