Stock FAQs

what do stock moving averages mean

by Hilbert Miller Published 3 years ago Updated 2 years ago
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Summary

  • A moving average is a technical indicator that investors and traders use to determine the trend direction of securities.
  • It is calculated by adding up all the data points during a specific period and dividing the sum by the number of time periods.
  • Moving averages help technical traders to generate trading signals.

The moving average (MA) is a simple technical analysis tool that smooths out price data by creating a constantly updated average price. The average is taken over a specific period of time, like 10 days, 20 minutes, 30 weeks, or any time period the trader chooses.

Full Answer

How to use moving average to buy stocks?

  • Every stock market security comes with a unique price history. ...
  • The main reason why investors want to identify a trend is to be able to predict future stock prices. ...
  • Stocks may show a cyclical pattern that cannot be accurately interpreted by using a moving average.

More items...

How do you calculate moving average price?

The moving average can be primarily of three types:

  • Simple Moving Average
  • Weighted Moving Average
  • Exponential Moving Average

How do you calculate a simple moving average?

  • VWAP is used in lower time frame (1min to 4hr).This is very effective for intra trade.
  • Exponential moving average gives cushion for price. This one can be used for lower time frame. Most common used are 5,15,21.
  • SMA is preffered for weekly time frame and monthly time frame. Very effective.

What is a moving average, and why is it useful?

Where:

  • The coefficient α {\displaystyle \alpha } represents the degree of weighting decrease, a constant smoothing factor between 0 and 1. ...
  • Y t {\displaystyle Y_ {t}} is the value at a time period t {\displaystyle t} .
  • S t {\displaystyle S_ {t}} is the value of the EMA at any time period t {\displaystyle t} .

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What does moving average of a stock tell you?

Moving averages are usually calculated to identify the trend direction of a stock or to determine its support and resistance levels. It is a trend-following—or lagging—indicator because it is based on past prices. The longer the time period for the moving average, the greater the lag.

What is a good moving average value?

Short moving averages (5-20 periods) are best suited for short-term trends and trading. Chartists interested in medium-term trends would opt for longer moving averages that might extend 20-60 periods. Long-term investors will prefer moving averages with 100 or more periods.

What does 50-day moving average tell you?

The 50-day moving average (also called "50 DMA" is a reliable technical indicator used by several investors to analyze price trends. It's simply a security's average closing price over the previous 50 days.

What is the 50 and 200-day moving average?

The 50-day moving average is calculated by summing up the past 50 data points and then dividing the result by 50, while the 200-day moving average is calculated by summing the past 200 days and dividing the result by 200.

When should I buy stock based on moving average?

As a general guideline, if the price is above a moving average, the trend is up. If the price is below a moving average, the trend is down. However, moving averages can have different lengths (discussed shortly), so one MA may indicate an uptrend while another MA indicates a downtrend.

Which moving average is best for trading?

The 200-day moving average is considered especially significant in stock trading. As long as the 50-day moving average of a stock price remains above the 200-day moving average, the stock is generally thought to be in a bullish trend. A crossover to the downside of the 200-day moving average is interpreted as bearish.

Why is the 200 day moving average important?

Key Takeaways. The 200-day moving average is represented as a line on charts and represents the average price over the past 200 days (or 40 weeks). The moving average can give traders a sense regarding whether the trend is up or down, while also identifying potential support or resistance areas.

What happens when stock crosses 200 day moving average?

The 200-day moving average is a popular technical indicator which investors use to analyse price trends. A stock that is trading above its 200 Day Moving Average is considered to be in a long term uptrend.

How do you analyze moving averages?

A moving average is a technical indicator that investors and traders use to determine the trend direction of securities. It is calculated by adding up all the data points during a specific period and dividing the sum by the number of time periods. Moving averages help technical traders to generate trading signals.

What is the golden cross in trading?

The golden cross is a bullish breakout pattern formed from a crossover involving a security's short-term moving average (such as the 15-day moving average) breaking above its long-term moving average (such as the 50-day moving average) or resistance level.

What is a buy signal?

A buy signal is an event or condition selected by a trader or investor as an alert for entering a purchase order for an investment. Buy signals can be either observed by analyzing chart patterns or calculated and automated by trading systems.

When should you buy stocks?

The upshot: Like early market trading, the hour before market close from 3 p.m. to 4 p.m. ET is one of the best times to buy and sell stock because of significant price movements, higher trading volume and inexperienced investors placing last-minute trades.

How does moving average work?

A moving average simplifies price data by smoothing it out and creating one flowing line. This makes seeing the trend easier. Exponential moving averages react quicker to price changes than simple moving averages. In some cases, this may be good, and in others, it may cause false signals.

How long is a moving average?

The average is taken over a specific period of time, like 10 days, 20 minutes, 30 weeks or any time period the trader chooses. There are advantages to using a moving average in your trading, as well as options on what type of moving average to use.

What is MA in trading?

A moving average (MA) is a widely used technical indicator that smooths out price trends by filtering out the “noise” from random short-term price fluctuations. Moving averages can be constructed in several different ways, and employ different numbers of days for the averaging interval.

What is a crossover in trading?

Trading Strategies—Crossovers. Crossovers are one of the main moving average strategies. The first type is a price crossover, which is when the price crosses above or below a moving average to signal a potential change in trend. Another strategy is to apply two moving averages to a chart: one longer and one shorter.

What is the look back period on a moving average?

The time frame or length you choose for a moving average, also called the "look back period," can play a big role in how effective it is. An MA with a short time frame will react much quicker to price changes than an MA with a long look back period.

Is moving average predictive?

Moving averages are calculated based on historical data, and nothing about the calculation is predictive in nature. Therefore, results using moving averages can be random. At times, the market seems to respect MA support/resistance and trade signals, and at other times, it shows these indicators no respect.

Is the trend up or down?

As a general guideline, if the price is above a moving average, the trend is up. If the price is below a moving average, the trend is down. However, moving averages can have different lengths (discussed shortly), so one MA may indicate an uptrend while another MA indicates a downtrend.

What is moving average?

A moving average is a technical indicator that market analysts and investors may use to determine the direction of a trend. It sums up the data points of a financial security over a specific time period and divides the total by the number of data points to arrive at an average. It is called a “moving” average because it is continually recalculated ...

Why is the moving average called the moving average?

It is called a “moving” average because it is continually recalculated based on the latest price data. Analysts use the moving average to examine support and resistance by evaluating the movements of an asset’s price. A moving average reflects the previous price action/movement of a security. Analysts or investors then use ...

What is an exponential moving average?

An exponential moving average tends to be more responsive to recent price changes, as compared to the simple moving average which applies equal weight to all price changes in the given period. When calculating the exponential moving average, the following three steps are used: 1.

How do moving averages work?

It is calculated by adding up all the data points during a specific period and dividing the sum by the number of time periods. Moving averages help technical traders to generate trading signals.

What is SMA indicator?

An SMA is backward-looking, as it relies on the past price data for a given period. It can be computed for different types of prices, i.e., high, low, open, and close. In financial markets, analysts and investors use the SMA indicator to determine buy and sell signals for securities. The SMA helps to identify support and resistance prices ...

What are Moving Averages (MA)?

Moving Averages (MA) are a technical indicator used to determine the average price of a stock over a set period of time (which can range from a couple of days to six months – or sometimes even longer).

Why Do Stock Traders Use Moving Averages?

Moving averages are mega-popular amongst traders of various different financial markets out there.

Calculating Moving Averages

Now, if you want to calculate an MA, you’ll need a certain amount of data, depending on the length of the moving average you choose.

Simple Moving Average s (SMA)

The first (and most popular) type of moving average we will cover is a simple moving average (SMA).

Simple Moving Averages on a Stock chart

Now, let’s take a look at different examples of Simple Moving Averages and compare how they smooth out the price action on a stock chart.

Exponential Moving Average s (EMA)

Moving on to the second type of moving averages, let’s dig deeper into exponential moving averages (EMA).

Comparing Exponential Moving Averages (EMA) vs Simple Moving Averages ( SMA)

A picture speaks a thousand words so let’s take a look at a simple moving average (SMA) and exponential moving average (EMA) side by side on a chart.

What Is the Moving Average?

The moving average is a technical indicator used to determine whether to buy or sell securities, usually stocks or commodities, and it compares the latest price with the average price during a specific timeframe. The moving average smooths out the daily price movements and creates a referencing trend for historical prices.

What Are the Most Common Days Used in the Moving Average?

The most common days used in calculating the moving average are 50 and 200, though it isn’t unusual to see 10, 20, 30, 40, or 100 days, depending on the need of the analysis.

How Does the Moving Average Compare With Other Technical Indicators?

The moving average is part of quantitative analysis, and can be used in conjunction with other technical indicators such as Bollinger bands or the relative strength index in determining whether a stock or commodity is overbought or oversold.

What Are the Limitations of a Moving Average?

Just like any indicator that uses historical pricing data, the moving average is a lagging indicator, and it cannot predict future trends. Daily, sharp up and down price changes can make it difficult to implement a short-term trading strategy.

How to Calculate a Simple Moving Average

Because the moving average is best illustrated graphically, the best way to calculate and visualize it is by creating a spreadsheet. For the simple moving average, add the closing price for each day in the period together, then divide the result by the total number of days in the period.

How to Interpret the Moving Average

Latest prices that are above or below the moving average indicate buy or sell signals. The latest trades that are below the moving average suggest buying. Conversely, the latest prices above the average suggest selling.

What Is The 50-Day Moving Average?

The 50-day moving average that IBD uses is a simple moving average, meaning it's not an exponential average that weighs recent action more heavily.

Using The 50-Day Line To Analyze Growth Stocks

The 50-day line is powerful. You may be wondering why this magical line works so consistently across all stocks as a universal point of reference.

50-Day Line: When To Buy Or Sell A Stock

The most important thing about the 50-day line? This chart tool comes with its own special set of buy and sell rules.

Netflix, Vertex Test Cases

In 2020, Netflix ( NFLX) lifted off from the 50-day line a couple of times in June. While shares traded below the 50-day line on June 5 and 8, the stock never closed below it. Therefore, there was no decisive break of the moving average. Rebounds from those levels gave Netflix new energy to extend its advance.

Simple Moving Average Explained

Mike Price is a personal finance writer with more than six years of prior experience working in the banking industry. He specializes in writing about investing, real estate and accounting for The Balance. His work has also been featured in other notable financial websites such as The Motley Fool.

Definition and Examples of Simple Moving Average

A simple moving average is the average stock price over a past period. The most common moving average time periods are 50 days and 200 days. This is because, once you subtract weekends and holidays, 50 days approximates the number of trading days in a quarter and 200 days approximates a year.

How Simple Moving Average Works

A simple moving average is calculated using an average of prices over the past 50 or 200 days. You can calculate this number manually, but it is also available on most financial websites and should be on your broker’s website as well.

Simple Moving Average vs. Exponential Moving Average vs. Weighted Moving Average

Exponential moving average (EMA) and weighted moving average (WMA) are similar to the simple moving average, but both are adjusted to give more impact to more recent trading days.

What is moving average?

The moving average is a tool that can help investors decide whether and when to buy or sell a stock. It presents a smoothed-out picture of where a stock’s price has been in the past and where it’s trending now.

What is exponential moving average?

An exponential moving average is a type of weighted moving average that calculates changes in a price cumulatively, rather than based on previous average. That means that all previous data values impact the EMA, since there is less variation over time.

Is moving average useful?

If prices are trending in one direction or another, a moving average may be a helpful metric. But if prices are choppy or volatile, the moving average becomes less useful, since it will swing along with the price. Allowing for a lengthier time frame may resolve this issue, but it can still occur.

Can moving averages tell you what stocks will do next?

As with all investments, past performance is not an indicator of future performance, so a moving average–no matter which type you use–can’t tell you what a stock will do next.

Is a moving average line a short term indicator?

As an analytical tool, a simple moving average is easy to interpret. If a stock’s current price is higher than an upward trending moving average line, the stock is headed up in the short-term. If a stock’s price is lower than a downward trending moving average line, the stock is headed down in the short-term.

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Understanding A Moving Average

  • Moving average is a simple, technical analysis tool. Moving averages are usually calculated to identify the trend direction of a stock or to determine its support and resistance levels. It is a trend-following—or lagging—indicator because it is based on past prices. The longer the time pe…
See more on investopedia.com

Types of Moving Averages

  • Simple Moving Average
    The simplest form of a moving average, known as a simple moving average (SMA), is calculated by taking the arithmetic mean of a given set of values over a specified period of time. In other words, a set of numbers–or prices in the case of financial instruments–are added together and t…
  • Exponential Moving Average
    The exponential moving average is a type of moving average that gives more weight to recent prices in an attempt to make it more responsive to new information. To calculate an EMA, you must first compute the simple moving average (SMA) over a particular time period. Next, you m…
See more on investopedia.com

Simple Moving Average

  • The calculation for EMA puts more emphasis on the recent data points. Because of this, EMA is considered a weighted averagecalculation. In the figure below, the number of time periods used in each average is identical–15–but the EMA responds more quickly to the changing prices than the SMA. You can also observe in the figure that the EMA has a higher value when the price is rising …
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Example of A Moving Average

  • The moving average is calculated differently depending on the type: SMA or EMA. Below, we look at a simple moving average (SMA) of a security with the following closing prices over 15 days: 1. Week 1 (5 days): 20, 22, 24, 25, 23 2. Week 2 (5 days): 26, 28, 26, 29, 27 3. Week 3 (5 days): 28, 30, 27, 29, 28 A 10-day moving average would average out the closing pricesfor the first 10 days as …
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Example of A Moving Average Indicator

  • A Bollinger Band® technical indicator has bands generally placed two standard deviations away from a simple moving average. In general, a move toward the upper band suggests the asset is becoming overbought, while a move close to the lower band suggests the asset is becoming oversold. Since standard deviation is used as a statistical measure of volatility, this indicator adj…
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Why Use A Moving Average

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A moving average helps cut down the amount of noise on a price chart. Look at the direction of the moving average to get a basic idea of which way the price is moving. If it is angled up, the price is moving up (or was recently) overall; angled down, and the price is moving down overall; moving sideways, and the price is like…
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Types of Moving Averages

  • A moving average can be calculated in different ways. A five-day simple moving average (SMA) adds up the five most recent daily closing pricesand divides the figure by five to create a new average each day. Each average is connected to the next, creating the singular flowing line. Another popular type of moving average is the exponential moving average (EMA). The calculati…
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Moving Average Length

  • Common moving average lengths are 10, 20, 50, 100, and 200. These lengths can be applied to any chart time frame (one minute, daily, weekly, etc.), depending on the trader's time horizon. The time frame or length you choose for a moving average, also called the "look back period," can play a big role in how effective it is.1 An MA with a short time frame will react much quicker to price c…
See more on investopedia.com

Trading Strategies: Crossovers

  • Crossovers are one of the main moving average strategies. The first type is a price crossover, which is when the price crosses above or below a moving average to signal a potential change in trend.2 Another strategy is to apply two moving averages to a chart: one longer and one shorter. When the shorter-term MA crosses above the longer-term MA, it's a buy signal, as it indicates th…
See more on investopedia.com

MA Disadvantages

  • Moving averages are calculated based on historical data and nothing about the calculation is predictive in nature. Therefore, results using moving averages can be random. At times, the market seems to respect MA support/resistance and trade signals, and at other times, it shows these indicators no respect.4 One major problem is that, if the price actionbecomes choppy, the …
See more on investopedia.com

The Bottom Line

  • A moving average simplifies price data by smoothing it out and creating one flowing line. This makes seeing the trend easier. Exponential moving averages react quicker to price changes than simple moving averages. In some cases, this may be good, and in others, it may cause false signals. Moving averages with a shorter look-back period (20 days, for example) will also respon…
See more on investopedia.com

What Are Moving Averages (MA)?

  • Moving Averages (MA) are a technical indicator used to determine the average price of a stock over a set period of time (which can range from a couple of days to six months – or sometimes even longer). On the price chart, the moving average is displayed as a line that smoothes out price data. Because the price action is all smoothed out, many stock...
See more on howtotrade.com

Why Do Stock Traders Use Moving Averages?

  • Moving averages are mega-popular amongst traders of various different financial markets out there. It is simply because trends don’t move in straight lines, in any market. Prices zig zag and moving averages are a fantastic tool that helps traders smooth out all these random price movements. It has the power to clear out market noise and therefore make it easier for traders t…
See more on howtotrade.com

Calculating Moving Averages

  • Now, if you want to calculate an MA, you’ll need a certain amount of data, depending on the length of the moving average you choose. For instance, a seven-day MA will require seven days of data. Fourteen-day MA will require fourteen days of data. Thirty-day MA will require thirty days of data. And so on. You get the point! The shorter the length of the MA, the fewer data points are include…
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Types of Moving Averages

  • There are two types of moving averages used by stock traders. 1. Simple Moving Averages (SMA) 2. Exponential Moving Averages (EMA) Let’s explore both of them in more detail below, shall we?
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Simple Moving Averages

  • The first (and most popular) type of moving average we will cover is a simple moving average (SMA). You calculate it by simply taking a series of prices over your chosen time period, adding these together and then dividing the result by the total number of data points used in the calculation. For example, let’s calculate the SMA for a seven-day period. All we need is to take th…
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Simple Moving Averages on A Stock Chart

  • Now, let’s take a look at different examples of Simple Moving Averages and compare how they smooth out the price action on a stock chart. And to help you visualise it better, we will plot three different SMA’s, a 10-period (short-term), a 20-period (medium-term) and a 50-period (long-term) simple moving averages. Now, out of the 10-period, 20-period and 50-period moving averages, w…
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Exponential Moving Averages

  • Moving on to the second type of moving averages, let’s dig deeper into exponential moving averages (EMA). Similar to simple moving average (SMA), exponential moving average (EMA) tracks the price of a share over time. The difference between these two, however, is that EMA gives more importance to recent price information and the closing price of the 1st candle will ha…
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Comparing Exponential Moving Averages

  • A picture speaks a thousand words so let’s take a look at a simple moving average (SMA) and exponential moving average (EMA) side by side on a chart. See how the blue line appears to be closer to the actual price than the black line? That’s because it represents the current price actionwith more accuracy. And let’s be honest, when you’re trading, you want to know what is ha…
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Is SMA Or Ema Better For Trading Stocks?

  • Truth be told, it’s all about your personal preference. Both have their own strengths and can be applied in different situations. And there’s certainly no harm in plotting both on the chart and seeing how they compare. In fact, why don’t you crack open yourtrading platformright now and have some fun with the moving averages? Remember you can experiment with different time pe…
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