What Is the Accumulation/Distribution Indicator (A/D)?

The accumulation/distribution indicator (A/D) is a cumulative indicator that uses volume and price to assess whether a stock is being accumulated or distributed. The A/D measure seeks to identify divergences between the stock price and the volume flow. This provides insight into how strong a trend is. If the price is rising but the indicator is falling, then it suggests that buying or accumulation volume may not be enough to support the price rise and a price decline could be forthcoming.

The Accumulation/Distribution Indicator (A/D) Formula

$\begin{aligned}&\text{MFM} = \frac {(\text{Close} – \text{Low} ) – ( \text{High} – \text{Close} ) } {\text{High} – \text{Low} } \\&\textbf{where:}\\&\text{MFM} = \text{Money Flow Multiplier} \\&\text{Close} = \text{Closing price} \\&\text{Low} = \text{Low price for the period} \\&\text{High} = \text{High price for the period} \\ \end{aligned}$​MFM=High−Low(Close−Low)−(High−Close)​where:MFM=Money Flow MultiplierClose=Closing priceLow=Low price for the periodHigh=High price for the period​

$\begin{aligned}&\text{Money Flow Volume} = \text{MFM} \times \text{Period Volume} \\ \end{aligned}$​Money Flow Volume=MFM×Period Volume​

$\begin{aligned}&\text{A/D} = \text{Previous A/D} + \text{CMFV}\\&\textbf{where:}\\&\text{CMFV} = \text{Current period money flow volume} \\ \end{aligned}$​A/D=Previous A/D+CMFVwhere:CMFV=Current period money flow volume​

How to Calculate the A/D Line

1. Start by calculating the multiplier. Note the most recent period’s close, high, and low to calculate.
2. Use the multiplier and the current period’s volume to calculate the money flow volume.
3. Add the money flow volume to the last A/D value. For the first calculation, use money flow volume as the first value.
4. Repeat the process as each period ends, adding/subtracting the new money flow volume to/from the prior total. This is A/D.

What Does the Accumulation/Distribution Indicator (A/D) Tell You?

The A/D line helps to show how supply and demand factors are influencing price. A/D can move in the same direction as price changes or in the opposite direction.

The multiplier in the calculation provides a gauge for how strong the buying or selling was during a particular period. It does this by determining whether the price closed in the upper or lower portion of its range. This is then multiplied by the volume. Therefore, when a stock closes near the high of the period’s range and has high volume, it will result in a large A/D jump. Alternatively, if the price finishes near the high of the range but volume is low, or if the volume is high but the price finishes more toward the middle of the range, then the A/D will not move up as much.

The same concepts apply when the price closes in the lower portion of the period’s price range. Both volume and where the price closes within the period’s range determine how much the A/D will decline.

The A/D line is used to help assess price trends and potentially spot forthcoming reversals. If a security’s price is in a downtrend while the A/D line is in an uptrend, then the indicator shows there may be buying pressure and the security’s price may reverse to the upside. Conversely, if a security’s price is in an uptrend while the A/D line is in a downtrend, then the indicator shows there may be selling pressure, or higher distribution. This warns that the price may be due for a decline.

In both cases, the steepness of the A/D line provides insight into the trend. A strongly rising A/D line confirms a strongly rising price. Similarly, if the price is falling and the A/D is also falling, then there is still plenty of distribution and prices are likely to continue to decline.

The Accumulation/Distribution Indicator (A/D) vs. On-Balance Volume (OBV)

Both of these technical indicators use price and volume, albeit somewhat differently. On-balance volume (OBV) looks at whether the current closing price is higher or lower than the prior close. If the close is higher, then the period’s volume is added. If the close is lower, then the period’s volume is subtracted.

The A/D indicator doesn’t factor in the prior close and uses a multiplier based on where the price closed within the period’s range. Therefore, the indicators use different calculations and may provide different information.

Limitations of Using the Accumulation/Distribution Indicator (A/D)

The A/D indicator does not factor in price changes from one period to the next, and focuses only on where the price closes within the current period’s range. This creates some anomalies.

Assume a stock gaps down 20% on huge volume. The price oscillates throughout the day and finishes in the upper portion of its daily range, but is still down 18% from the prior close. Such a move would actually cause the A/D to rise. Even though the stock lost a significant amount of value, it finished in the upper portion of its daily range; therefore, the indicator will increase, likely dramatically, due to the large volume. Traders need to monitor the price chart and mark any potential anomalies like these, as they could affect how the indicator is interpreted.

Also, one of the main uses of the indicator is to monitor for divergences. Divergences can last a long time and are poor timing signals. When divergence appears between the indicator and price, it doesn’t mean a reversal is imminent. It may take a long time for the price to reverse, or it may not reverse at all.

The A/D is just one tool that can be used to assess strength or weakness within a trend, but it is not without its faults. Use the A/D indicator in conjunction with other forms of analysis, such as price action analysis, chart patterns, or fundamental analysis, to get a more complete picture of what is moving the price of a stock.

What Is the Acid-Test Ratio?

The acid-test ratio, commonly known as the quick ratio, uses a firm’s balance sheet data as an indicator of whether it has sufficient short-term assets to cover its short-term liabilities.

Understanding the Acid-Test Ratio

In certain situations, analysts prefer to use the acid-test ratio rather than the current ratio (also known as the working capital ratio) because the acid-test method ignores assets such as inventory, which may be difficult to quickly liquidate. The acid test ratio is thus a more conservative metric.

Companies with an acid-test ratio of less than 1 do not have enough liquid assets to pay their current liabilities and should be treated with caution. If the acid-test ratio is much lower than the current ratio, it means that a company’s current assets are highly dependent on inventory.

This is not a bad sign in all cases, however, as some business models are inherently dependent on inventory. Retail stores, for example, may have very low acid-test ratios without necessarily being in danger. The acceptable range for an acid-test ratio will vary among different industries, and you’ll find that comparisons are most meaningful when analyzing peer companies in the same industry as each other.

For most industries, the acid-test ratio should exceed 1. On the other hand, a very high ratio is not always good. It could indicate that cash has accumulated and is idle, rather than being reinvested, returned to shareholders, or otherwise put to productive use.

Some tech companies generate massive cash flows and accordingly have acid-test ratios as high as 7 or 8. While this is certainly better than the alternative, these companies have drawn criticism from activist investors who would prefer that shareholders receive a portion of the profits.

Calculating the Acid-Test Ratio

The numerator of the acid-test ratio can be defined in various ways, but the main consideration should be gaining a realistic view of the company’s liquid assets. Cash and cash equivalents should definitely be included, as should short-term investments, such as marketable securities.

Accounts receivable are generally included, but this is not appropriate for every industry. In the construction industry, for example, accounts receivable may take much more time to recover than is standard practice in other industries, so including it could make a firm’s financial position seem much more secure than it is in reality.

The formula is:

$\begin{aligned} &\text{Acid Test} = \frac{ \text{Cash} + \text{Marketable Securities} + \text{A/R} }{ \text{Current Liabilities} } \\ &\textbf{where:} \\ &\text{A/R} = \text{Accounts receivable} \\ \end{aligned}$​Acid Test=Current LiabilitiesCash+Marketable Securities+A/R​where:A/R=Accounts receivable​

Another way to calculate the numerator is to take all current assets and subtract illiquid assets. Most importantly, inventory should be subtracted, keeping in mind that this will negatively skew the picture for retail businesses because of the amount of inventory they carry. Other elements that appear as assets on a balance sheet should be subtracted if they cannot be used to cover liabilities in the short term, such as advances to suppliers, prepayments, and deferred tax assets.

The ratio’s denominator should include all current liabilities, which are debts and obligations that are due within one year. It is important to note that time is not factored into the acid-test ratio. If a company’s accounts payable are nearly due but its receivables won’t come in for months, that company could be on much shakier ground than its ratio would indicate. The opposite can also be true.

Acid-Test Ratio Example

A company’s acid-test ratio can be calculated using its balance sheet. Below is an abbreviated version of Apple Inc.’s (AAPL) balance sheet as of Jan. 27, 2022, showing the components of the company’s current assets and current liabilities (all figures in millions of dollars):