# How Support and Resistance Form as Areas on a Chart This educational primer explains how support and resistance price levels and zones are defined, drawn from prior highs and lows, and misread on a chart. By OPT Team | Published 2026-10-13 | Updated 2026-10-13 [Read the canonical HTML article](https://www.onepurposetrading.com/blog/how-support-and-resistance-form-as-areas-on-a-chart) ## What does Support and Resistance measure? ## Summary Support and resistance describe price areas, not a single calculated value, where buying or selling pressure has shown up in the past. Support is the price level at which demand is thought to be strong enough to keep price from declining further. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Resistance is the price level at which selling is thought to be strong enough to keep price from rising further. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Support levels are usually below the current price, though a security can also trade at or near a support level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Resistance levels are usually above the current price, though a security can also trade at or near a resistance level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Every reading in this article comes from past market data; none of it is a forecast. ## How is Support and Resistance calculated? ## Summary There is no formula to run; support and resistance areas are drawn by locating places on a chart where price has previously reversed. Support levels can be drawn from prior reaction lows, and resistance levels can be drawn from prior reaction highs. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) A trading range is a period when price moves within a relatively tight band, reflecting a balance between supply and demand, and a move beyond that band, up or down, shows that one side has taken control. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Because technical analysis is not an exact science, some traders define support and resistance as zones rather than single exact prices. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) As a general guideline, shorter trading ranges with a tight price span are more suited to exact support and resistance levels, while longer trading ranges with a wide price span are more suited to support and resistance zones. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) ## Where did Support and Resistance come from? ## Summary Our sources do not document this. ## What does published research say? ## Summary General reviews of technical trading rules, like those cited below, can include tests of support and resistance rules; the findings quoted here do not report a separate result for support and resistance rules. Our sources include reviews of technical trading rules in general. A 2007 review by Cheol-Ho Park and Scott Irwin looked at 95 modern studies of technical trading rules in general: 56 reported positive results, 20 negative results, and 19 mixed results. Despite that positive evidence, the review found that most of the studies had problems in their testing, such as data snooping and difficulty estimating risk and transaction costs, and said future research must fix them before the evidence can be called conclusive. [RePEc IDEAS](https://ideas.repec.org/a/bla/jecsur/v21y2007i4p786-826.html) A 2011 St. Louis Fed working paper by Christopher Neely and Paul Weller reviewed research on technical trading rules in general in currency markets. It reported that simple rules on dollar exchange rates gave positive returns, after accounting for risk, for 15 years in the 1970s and 1980s before those returns disappeared, and that more complex, less studied rules have since produced more modest returns. [Fed in Print (Federal Reserve)](https://fedinprint.org/item/fedlwp/9562/original) ## How is Support and Resistance commonly used? ## Summary A support or resistance area marks a price area that has previously slowed or reversed a move, which a person can note on their own chart alongside other context. Support does not always hold; a break below a support level shows that sellers have gained control over buyers at that level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Resistance does not always hold; a break above a resistance level shows that buyers have gained control over sellers at that level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Once a support level is broken, that former support level can become a new resistance level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) A broken resistance level can likewise become a new support level once price moves back above it. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) For example, a chart might show a prior reaction low acting as a support area across several sessions. If price later closes below that area, the same area may act as a resistance area if price returns to it afterward. This example is illustrative only and does not indicate typical results. ## What are the limits and common misreads? ## Summary Support and Resistance are read from past market data; they are not a forecast. As a general guideline, shorter trading ranges with a tight price span are more suited to exact support and resistance levels, while longer trading ranges with a wide price span are more suited to support and resistance zones. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) Marking a wide trading range with a single exact price line skips that guideline, and normal movement inside the same area can look like a break when it has not left the area at all. A support or resistance area reflects past price action only. No indicator predicts the next move. ## How is Support and Resistance read alongside other context? ## Summary A support or resistance area is one piece of information among several that can appear on the same chart. A support or resistance area sits next to other context a person already has in front of them, such as the broader trend on the chart or other tools in use. No indicator or combination of indicators makes an outcome certain. Trading involves the risk of loss. ## Key takeaways - Support is the price level at which demand is thought to be strong enough to keep price from declining further. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) - Resistance is the price level at which selling is thought to be strong enough to keep price from rising further. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) - Because technical analysis is not an exact science, some traders define support and resistance as zones rather than single exact prices. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) - Once a support level is broken, that former support level can become a new resistance level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) - Every reading in this article comes from past market data; none of it is a forecast. ## Disclosure This article is educational and is not personalized financial advice. Examples are illustrative only and do not indicate typical results. No outcome is assured. Trading involves the risk of loss. ## Next step If you want a place to record the support and resistance areas you mark before a session, see [what to record about the chart before you enter](/blog/what-to-record-about-the-chart-before-you-enter). ## Frequently asked questions ### Are support and resistance the same for every chart? As a general guideline, shorter trading ranges with a tight price span are more suited to exact support and resistance levels, while longer trading ranges with a wide price span are more suited to support and resistance zones. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) ### Can a support level turn into a resistance level? Once a support level is broken, that former support level can become a new resistance level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) ### Does price always react at a support or resistance area? Support does not always hold; a break below a support level shows that sellers have gained control over buyers at that level. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) ### Why do some charts show an area instead of a single line? Because technical analysis is not an exact science, some traders define support and resistance as zones rather than single exact prices. [StockCharts ChartSchool](https://chartschool.stockcharts.com/table-of-contents/chart-analysis/support-and-resistance) ## Risk disclosure This article is educational content from One Purpose Trading. It is not financial, investment, tax, or legal advice, and nothing here is a recommendation to buy or sell any security or instrument. Trading involves substantial risk of loss and is not suitable for everyone. You can lose more than your initial investment. Any examples, figures, or scenarios are illustrative only. Results are not typical, and past performance does not guarantee future results. You are responsible for your own decisions. Trade only with capital you can afford to lose, and consider consulting a licensed professional about your individual situation.