The price-to-earnings ratio is the ratio for valuing a company that measures its current share price relative to its earnings per share (EPS). The price-to-earnings ratio is also sometimes known as the price multiple or the earnings multiple.https://www.youtube.com/watch?v=EPbujyrWnl0
P/E ratios are used by investors and
analysts to determine the relative value of a company's shares in an
apples-to-apples comparison. It can also be used to compare a company against
its own historical record or to compare aggregate markets against one another
or over time.
P/E
Ratio Formula and Calculation
To determine the P/E value, one must simply divide the current stock price by the earnings per share (EPS).
The current stock price (P) can be found simply by
plugging a stock’s ticker symbol into any finance website, and although this
concrete value reflects what investors must currently pay for a stock, the
EPS is a slightly more nebulous figure.
EPS comes in two main varieties. TTM is a Wall
Street acronym for "trailing 12 months". This number signals the company's performance
over the past 12 months. The second type of EPS is found in a
company's earnings release, which often provides EPS guidance. This is
the company's best-educated guess of what it expects to earn in the future.
These different versions of EPS form the basis of trailing and forward P/E,
respectively.
Understanding the P/E Ratiohttps://www.youtube.com/watch?v=EPbujyrWnl0
The price-to-earnings ratio (P/E) is one of the most widely used tools by which investors and analysts determine a stock's relative valuation. The P/E ratio helps one determine whether a stock is overvalued or undervalued. A company's P/E can also be benchmarked against other stocks in the same industry or against the broader market
Sometimes, analysts are interested in long-term valuation
trends and consider the P/E 10 or P/E 30 measures, which average the past 10 or
past 30 years of earnings, respectively. These measures are often used when
trying to gauge the overall value of a stock index.
Analysts and investors review a company's
P/E ratio when they determine if the share price accurately represents the projected
earnings per share.
Forward Price-to-Earnings
These two types of EPS metrics factor into the most common types of P/E ratios: the forward P/E and the trailing P/E. A third and less common variation uses the sum of the last two actual quarters and the estimates of the next two quarters.
The forward (or leading) P/E uses future earnings guidance rather than trailing figures. Sometimes called
"estimated price to earnings," this forward-looking indicator is
useful for comparing current earnings to future earnings and helps provide a
clearer picture of what earnings will look like—without changes and other
accounting adjustments.
However, there are inherent problems with the forward P/E
metric—namely, companies could underestimate earnings in order to beat the
estimated P/E when the next quarter's earnings are announced. Other companies
may overstate the estimate and later adjust it going into their next earnings announcement. Furthermore, external analysts may also provide
estimates, which may diverge from the company estimates, creating confusion.
Trailing Price-to-Earnings
The trailing P/E relies on past performance by dividing the current share price by the total EPS earnings over the past 12 months. It's the most popular P/E metric because it's the most objective—assuming the company reported earnings accurately. Some investors prefer to look at the trailing P/E because they don't trust another individual’s earnings estimates. But the trailing P/E also has its share of shortcomings—namely, that a company’s past performance doesn’t signal future behavior.
Investors should thus commit money based on
future earnings power, not
the past. The fact that the EPS number remains constant, while the stock prices
fluctuate, is also a problem. If a major company event drives the stock price
significantly higher or lower, the trailing P/E will be less reflective of
those changes.
The trailing P/E ratio will change as the price of a
company’s stock moves because earnings are only released each quarter, while
stocks trade day in and day out. As a result, some investors prefer the forward
P/E. If the forward P/E ratio is lower than the trailing P/E ratio, it means
analysts are expecting earnings to increase; if the forward P/E is higher than
the current P/E ratio, analysts expect them to decrease.
Valuation From P/E
The price-to-earnings ratio or P/E is one
of the most widely used stock analysis tools by which investors and
analysts determine stock valuation. In addition to showing whether
a company's stock price is overvalued or undervalued, the P/E can
reveal how a stock's valuation compares to its industry group or a
benchmark like the S&P 500 Index.
In essence, the price-to-earnings ratio indicates the
dollar amount an investor can expect to invest in a company in order to receive
$1 of that company’s earnings. This is why the P/E is sometimes referred to as
the price multiple because it shows how much investors are willing to pay per
dollar of earnings. If a company was currently trading at a P/E multiple of
20x, the interpretation is that an investor is willing to pay $20 for $1 of
current earnings.
The P/E ratio helps investors determine the market
value of a stock as compared to the company's earnings. In short, the
P/E ratio shows what the market is willing to pay today for a stock based
on its past or future earnings. A high P/E could mean that a stock's price
is high relative to earnings and possibly overvalued. Conversely, a low P/E
might indicate that the current stock price is low relative to earnings.
Example of the P/E Ratio
As a
historical example, let's calculate the P/E ratio for Walmart Inc. (WMT) as of
Feb. 3, 2021, when the company's stock price closed at $139.55.2 The
company's earnings per share for the fiscal year ending Jan. 31, 2021, was
$4.75, according to The
Wall Street Journal.3
Therefore, Walmart's P/E ratio was:
$139.55 / $4.75 = 29.38
Comparing Companies Using P/E
As an additional example, we can look at two financial
companies to compare their P/E ratios and see which is relatively over- or
undervalued.
Bank of America Corporation (BAC) closed out
the year 2020 with the following stats:
- Stock
Price = $30.31
- Diluted EPS = $1.87
- P/E = 16.21x ($30.31 / $1.87)4
- https://www.youtube.com/watch?v=EPbujyrWnl0
In other words, Bank of America traded at roughly
16x trailing earnings. However, the 16.21 P/E multiple by itself
isn't helpful unless you have something to compare it with, such as the stock's
industry group, a benchmark index, or Bank of America's historical P/E range.
Bank of America's P/E at 16x was slightly higher than the
S&P 500, which over time trades at about 15x trailing earnings. To
compare Bank of America's P/E to a peer's, we can calculate the P/E for JPMorgan
Chase & Co. (JPM) as of the
end of 2020 as well:
- Stock Price = $127.07
- Diluted EPS = $8.88
- P/E = 14.31x5
When you compare Bank of America's P/E of 16x to
JPMorgan's P/E of roughly 14x, Bank of America's stock does not appear as
overvalued as it did when compared with the average P/E of 15 for
the S&P 500. Bank of America's higher P/E ratio might mean
investors expected higher earnings growth in the future compared
to JPMorgan and the overall market.
However, no single ratio can tell you all you need to
know about a stock. Before investing, it is wise to use a variety of financial
ratios to determine whether a stock is fairly valued and whether a company's
financial health justifies its stock valuation.
Investor Expectations
In general, a high P/E suggests that investors are
expecting higher earnings growth in the future compared to companies with a
lower P/E. A low P/E can indicate either that a company may currently be undervalued
or that the company is doing exceptionally well relative to its past trends.
When a company has no earnings or is posting losses, in both cases, the P/E will be expressed as N/A. Though it is possible to calculate a negative P/E, this
is not the common convention.
The price-to-earnings ratio can also be seen as a means
of standardizing the value of $1 of earnings throughout the stock market. In
theory, by taking the median of P/E ratios over a period of several years, one
could formulate something of a standardized P/E ratio, which could then be seen
as a benchmark and used to indicate whether or not a stock is worth buying.
N/A Meaning
A P/E ratio of N/A means the ratio is not available or
not applicable for that company's stock. A company can have a P/E ratio of N/A
if it's newly listed on the stock exchange and has not yet reported earnings,
such as in the case of an initial public offering (IPO), but it also means a
company has zero or negative earnings, Investors can thus interpret seeing N/A
as a company reporting a net loss.
P/E vs. Earnings Yield
The inverse of the P/E ratio is the earnings yield (which
can be thought of as the E/P ratio). The earnings yield is thus defined as EPS
divided by the stock price, expressed as a percentage.
If Stock A is trading at $10, and its EPS for the past
year was 50 cents (TTM), it has a P/E of 20 (i.e., $10 / 50 cents) and an
earnings yield of 5% (50 cents / $10). If Stock B is trading at $20 and its EPS
(TTM) was $2, it has a P/E of 10 (i.e., $20 / $2) and an earnings yield of
10% = ($2 / $20).
https://www.youtube.com/watch?v=EPbujyrWnl0
The earnings yield as an investment valuation metric is
not as widely used as the P/E ratio. Earnings yields can be useful when
concerned about the rate of return on investment. For equity investors,
however, earning periodic investment income may be secondary to growing their
investments' values over time. This is why investors may refer to value-based
investment metrics such as the P/E ratio more often than earnings yield when
making stock investments.
The earnings yield is also useful in producing a metric
when a company has zero or negative earnings. Because such a case is common
among high-tech, high-growth, or startup companies, EPS will be negative
producing an undefined P/E ratio (denoted as N/A). If a company has negative
earnings, however, it will produce a negative earnings yield, which can be interpreted
and used for comparison.
P/E vs. PEG Ratio
A P/E ratio, even one calculated using a forward earnings estimate, doesn't always tell you whether the P/E is appropriate
for the company's forecasted growth rate. So, to address this limitation,
investors turn to another ratio called the PEG ratio.
A variation on the forward P/E ratio is the price/earnings-to-growth ratio, or PEG. The PEG ratio measures the relationship between
the price/earnings ratio and earnings growth to provide investors
with a more complete story than the P/E can on its own. In other words,
the PEG ratio allows investors to calculate whether a stock's
price is overvalued or undervalued by analyzing
both today's earnings and the expected growth rate for the
company in the future. The PEG ratio is calculated as a company’s trailing
price-to-earnings (P/E) ratio divided by the growth rate of its earnings for a
specified time period.
The PEG ratio is used to determine a stock's value based
on trailing earnings while also taking the company's future earnings growth
into account and is considered to provide a more complete picture than the P/E
ratio can. For example, a low P/E ratio may suggest that a stock is undervalued
and therefore should be bought—but factoring in the company's growth rate to
get its PEG ratio can tell a different story. PEG ratios can be termed
“trailing” if using historic growth rates or “forward” if using projected
growth rates.
Although earnings growth rates can vary among
different sectors, a stock with a PEG of less than 1 is typically
considered undervalued because its price is considered low compared to the
company's expected earnings growth. A PEG greater than 1 might
be considered overvalued because it might indicate the stock price is too
high compared to the company's expected earnings growth.
Absolute vs. Relative P/E
Analysts may also make a distinction between absolute P/E
and relative P/E ratios
in their analysis.
Absolute P/E
The numerator of this ratio is usually the current stock
price, and the denominator may be the trailing EPS (TTM), the
estimated EPS for the next 12 months (forward P/E), or a mix of the trailing
EPS of the last two quarters and the forward P/E for the next two quarters.
When distinguishing absolute P/E from relative P/E, it is
important to remember that absolute P/E represents the P/E of the current time
period. For example, if the price of the stock today is $100, and the TTM
earnings are $2 per share, the P/E is 50 = ($100 / $2).
Relative P/E
The relative P/E compares
the current absolute P/E to a benchmark or a range of past P/Es over a relevant
time period, such as the past 10 years. The relative P/E shows what portion or
percentage of the past P/Es the current P/E has reached. The relative P/E
usually compares the current P/E value to the highest value of the range, but
investors might also compare the current P/E to the bottom side of the range,
measuring how close the current P/E is to the historic low.
The relative P/E will have a value below 100% if the
current P/E is lower than the past value (whether the past high or low). If the
relative P/E measure is 100% or more, this tells investors that the current P/E
has reached or surpassed the past value.
Limitations of Using the P/E Ratio
Like any other fundamental designed to inform investors
as to whether or not a stock is worth buying, the price-to-earnings ratio comes
with a few limitations that
are important to take into account because investors may often be led to
believe that there is one single metric that will provide complete insight into
an investment decision, which is virtually never the case.
Companies that aren't profitable and, consequently, have
no earnings—or negative earnings per share—pose a challenge when it comes to
calculating their P/E. Opinions vary as to how to deal with this. Some say there
is a negative P/E, others assign a P/E of 0, while most just say the P/E
doesn't exist (N/A or not available) or
is not interpretable until a company becomes profitable for purposes of
comparison.
One primary limitation of using P/E ratios emerges when
comparing the P/E ratios of different companies. Valuations and growth rates of
companies may often vary wildly between sectors due to both the different ways
companies earn money and the differing timelines during which companies earn
that money.
As such, one should only use P/E as a comparative tool
when considering companies in the same sector because this kind of comparison
is the only kind that will yield productive insight. Comparing the P/E ratios
of a telecommunications company and an energy company, for example, may lead
one to believe that one is clearly the superior investment, but this is not a
reliable assumption.
Other P/E Considerations
An individual company’s P/E ratio is much more meaningful
when taken alongside the P/E ratios of other companies within the same sector.
For example, an energy company may have a high P/E ratio, but this may reflect
a trend within the sector rather than one merely within the individual company.
An individual company’s high P/E ratio, for example, would be less cause for
concern when the entire sector has high P/E ratios.
Moreover, because a company’s debt can affect both the
prices of shares and the company’s earnings, leverage can
skew P/E ratios as well. For example, suppose there are two similar companies
that differ primarily in the amount of debt they assume. The one with more debt
will likely have a lower P/E value than the one with less debt. However, if
business is good, the one with more debt stands to see higher earnings because
of the risks it has taken.
Another important limitation of price-to-earnings ratios
is one that lies within the formula for calculating P/E itself. Accurate and
unbiased presentations of P/E ratios rely on accurate inputs of the market
value of shares and of accurate earnings per share estimates. The market
determines the prices of shares through its continuous auction. The printed
prices are available from a wide variety of reliable sources. However, the
source for earnings information is ultimately the company itself. This single
source of data is more easily manipulated, so analysts and investors place
trust in the company's officers to provide accurate information. If that trust
is perceived to be broken, the stock will be considered riskier and therefore
less valuable.
To reduce the risk of inaccurate information, the P/E
ratio is but one measurement that analysts scrutinize. If the company were to
intentionally manipulate the numbers to look better, and thus deceive
investors, they would have to work strenuously to be certain that all metrics
were manipulated in a coherent manner, which is difficult to do. That's why the
P/E ratio continues to be one of the most centrally referenced points of data
when analyzing a company, but by no means is it the only one.
What Is a Good
Price-to-Earnings Ratio?
The question of what is a good or bad price-to-earnings
ratio will necessarily depend on the industry in which the company is
operating. Some industries will have higher average price-to-earnings ratios,
while others will have lower ratios. For example, in January 2021, publicly
traded broadcasting companies had an average trailing P/E ratio of only about
12, compared to more than 60 for software companies.6 If you
want to get a general idea of whether a particular P/E ratio is high or low,
you can compare it to the average P/E of the competitors within its industry.
Is It Better to Have a
Higher or Lower P/E Ratio?
Many investors will say that it is better to buy shares
in companies with a lower P/E because this means you are paying less for every
dollar of earnings that you receive. In that sense, a lower P/E is like a lower
price tag, making it attractive to investors looking for a bargain. In
practice, however, it is important to understand the reasons behind a company’s
P/E. For instance, if a company has a low P/E because its business model is
fundamentally in decline, then the apparent bargain might be an illusion.
What Does a P/E Ratio of
15 Mean?
Simply put, a P/E ratio of 15 would mean that the current
market value of the company is equal to 15 times its annual earnings. Put
literally, if you were to hypothetically buy 100% of the company’s shares, it
would take 15 years for you to earn back your initial investment through the
company’s ongoing profits assuming the company never grew in the future.
Why Is the P/E Ratio
Important?
The P/E ratio helps investors determine whether the stock
of a company is overvalued or undervalued compared to its earnings. The ratio
is a measurement of what the market is willing to pay for the current
operations as well as the prospective growth of the company. If a company is
trading at a high P/E ratio, the market thinks highly of its growth potential
and is willing to potentially overspend today based on future earnings.
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