What Is the Altman Z-Score?

The Altman Z-score is the output of a credit-strength test that gauges a publicly traded manufacturing company’s likelihood of bankruptcy.

Understanding the Altman Z-Score

The Altman Z-score, a variation of the traditional z-score in statistics, is based on five financial ratios that can be calculated from data found on a company’s annual 10-K report. It uses profitability, leverage, liquidity, solvency, and activity to predict whether a company has a high probability of becoming insolvent.

NYU Stern Finance Professor Edward Altman developed the Altman Z-score formula in 1967, and it was published in 1968. Over the years, Altman has continued to reevaluate his Z-score. From 1969 until 1975, Altman looked at 86 companies in distress, then 110 from 1976 to 1995, and finally 120 from 1996 to 1999, finding that the Z-score had an accuracy of between 82% and 94%.

In 2012, he released an updated version called the Altman Z-score Plus that one can use to evaluate public and private companies, manufacturing and non-manufacturing companies, and U.S. and non-U.S. companies. One can use Altman Z-score Plus to evaluate corporate credit risk. The Altman Z-score has become a reliable measure of calculating credit risk.

How to Calculate the Altman Z-Score

One can calculate the Altman Z-score as follows:

Altman Z-Score = 1.2A + 1.4B + 3.3C + 0.6D + 1.0E

Where:

• A = working capital / total assets
• B = retained earnings / total assets
• C = earnings before interest and tax / total assets
• D = market value of equity / total liabilities
• E = sales / total assets

A score below 1.8 means it’s likely the company is headed for bankruptcy, while companies with scores above 3 are not likely to go bankrupt. Investors can use Altman Z-scores to determine whether they should buy or sell a stock if they’re concerned about the company’s underlying financial strength. Investors may consider purchasing a stock if its Altman Z-Score value is closer to 3 and selling or shorting a stock if the value is closer to 1.8.

In more recent years, however, a Z-Score closer to 0 indicates a company may be in financial trouble. In a lecture given in 2019 titled “50 Years of the Altman Score,” Professor Altman himself noted that recent data has shown that 0—not 1.8—is the figure at which investors should worry about a company’s financial strength. The two-hour lecture is available to view for free on YouTube.

2008 Financial Crisis

In 2007, the credit ratings of specific asset-related securities had been rated higher than they should have been. The Altman Z-score indicated that the companies’ risks were increasing significantly and may have been heading for bankruptcy.

Altman calculated that the median Altman Z-score of companies in 2007 was 1.81. These companies’ credit ratings were equivalent to a B. This indicated that 50% of the firms should have had lower ratings, were highly distressed and had a high probability of becoming bankrupt.

Altman’s calculations led him to believe a crisis would occur and there would be a meltdown in the credit market. He believed the crisis would stem from corporate defaults, but the meltdown, which brought about the 2008 financial crisis, began with mortgage-backed securities (MBS). However, corporations soon defaulted in 2009 at the second-highest rate in history.

What Is an American Depositary Receipt (ADR)?

The term American depositary receipt (ADR) refers to a negotiable certificate issued by a U.S. depositary bank representing a specified number of shares—usually one share—of a foreign company’s stock. The ADR trades on U.S. stock markets as any domestic shares would.

ADRs offer U.S. investors a way to purchase stock in overseas companies that would not otherwise be available. Foreign firms also benefit, as ADRs enable them to attract American investors and capital without the hassle and expense of listing on U.S. stock exchanges.

How American Depositary Receipts (ADRs) Work

American depositary receipts are denominated in U.S. dollars. The underlying security is held by a U.S. financial institution, often by an overseas branch. These securities are priced and traded in dollars and cleared through U.S. settlement systems.

In order to begin offering ADRs, a U.S. bank must purchase shares on a foreign exchange. The bank holds the stock as inventory and issues an ADR for domestic trading. ADRs list on either the New York Stock Exchange (NYSE) or the Nasdaq, but they are also sold over-the-counter (OTC).

U.S. banks require that foreign companies provide them with detailed financial information. This requirement makes it easier for American investors to assess a company’s financial health.

Types of American Depositary Receipts

American depositary receipts come in two basic categories:

Sponsored ADRs

A bank issues a sponsored ADR on behalf of the foreign company. The bank and the business enter into a legal arrangement. The foreign company usually pays the costs of issuing an ADR and retains control over it, while the bank handles the transactions with investors. Sponsored ADRs are categorized by what degree the foreign company complies with Securities and Exchange Commission (SEC) regulations and American accounting procedures.

Unsponsored ADRs

A bank also issues an unsponsored ADR. However, this certificate has no direct involvement, participation, or even permission from the foreign company. Theoretically, there could be several unsponsored ADRs for the same foreign company, issued by different U.S. banks. These different offerings may also offer varying dividends. With sponsored programs, there is only one ADR, issued by the bank working with the foreign company.

One primary difference between the two types of ADRs is where they trade. All except the lowest level of sponsored ADRs register with the SEC and trade on major U.S. stock exchanges. Unsponsored ADRs will trade only over the counter. Unsponsored ADRs never include voting rights.

ADR Levels

ADRs are additionally categorized into three levels, depending on the extent to which the foreign company has accessed the U.S. markets.

Level I

This is the most basic type of ADR where foreign companies either don’t qualify or don’t want to have their ADR listed on an exchange. This type of ADR can be used to establish a trading presence but not to raise capital.

Level I ADRs found only on the over-the-counter market have the loosest requirements from the Securities and Exchange Commission (SEC) and they are typically highly speculative. While they are riskier for investors than other types of ADRs, they are an easy and inexpensive way for a foreign company to gauge the level of U.S. investor interest in its securities.

Level II

As with Level I ADRs, Level II ADRs can be used to establish a trading presence on a stock exchange, and they can’t be used to raise capital. Level II ADRs have slightly more requirements from the SEC than do Level I ADRs, but they get higher visibility and trading volume. 

Level III

Level III ADRs are the most prestigious. With these, an issuer floats a public offering of ADRs on a U.S. exchange. They can be used to establish a substantial trading presence in the U.S. financial markets and raise capital for the foreign issuer. Issuers are subject to full reporting with the SEC.

American Depositary Receipt Pricing and Costs

An ADR may represent the underlying shares on a one-for-one basis, a fraction of a share, or multiple shares of the underlying company. The depositary bank will set the ratio of U.S. ADRs per home-country share at a value that they feel will appeal to investors. If an ADR’s value is too high, it may deter some investors. Conversely, if it is too low, investors may think the underlying securities resemble riskier penny stocks.

Because of arbitrage, an ADR’s price closely tracks that of the company’s stock on its home exchange. Remember that arbitrage is buying and selling the same asset at the same time in different markets. This allows traders to profit from any differences in the asset’s listed price. 

ADR Fees

Investing in an ADR may incur additional fees that are not charged for domestic stocks. The depositary bank that holds the underlying stock may charge a fee, known as a custody fee, to cover the cost of creating and issuing an ADR.

This fee will be outlined in the ADR prospectus, and typically ranges from one to three cents per share. The fee will be either deducted from dividends, or passed on to the investor’s brokerage firm.

ADRs and Taxes

Holders of ADRs realize any dividends and capital gains in U.S. dollars. However, dividend payments are net of currency conversion expenses and foreign taxes. Usually, the bank automatically withholds the necessary amount to cover expenses and foreign taxes.

Since this is the practice, American investors would need to seek a credit from the IRS or a refund from the foreign government’s taxing authority to avoid double taxation on any capital gains realized.

Those interested in learning more about ADRs and other financial topics may want to consider enrolling in one of the best investing courses currently available.

Advantages and Disadvantages of American Depositary Receipts

As with any investment, there are distinct advantages and disadvantages of investing in ADRs. We’ve listed some of the main ones below.

Advantages

As noted above, ADRs are just like stocks. This means they trade on a stock exchange or over the counter, making them fairly easy to access and trade. Investors can also easily track their performance by reviewing market data.

Purchasing ADRs is easy because they’re available directly through American brokers. This eliminates the need to go through foreign channels to buy stock in a company in which you may be interested. Since they’re available domestically, shares are denominated in U.S. dollars. But that doesn’t mean you avoid any direct risks associated with fluctuations in currency rates.

One of the most obvious benefits of investing in ADRs is that they provide investors with a way to diversify their portfolios. Investing in international securities allows you to open your investment portfolio up to greater rewards (along with the risks).

Disadvantages

The main problems associated with ADRs are that they may involve double taxation—locally and abroad—and how many companies are listed. Unlike domestic companies, there are a limited number of foreign entities whose ADRs are listed for the public to trade.

As noted above, some ADRs may not comply with SEC regulations. These are called unsponsored ADRs, which have no direct involvement by the company. In fact, some companies may not even provide permission to list their shares this way.

Although investors can avoid any of the direct risks that come with currency exchange, they may incur currency conversion fees when they invest in ADRs. These fees are established in order to directly link the foreign security and the one traded on the domestic market.

History of American Depositary Receipts

Before American depositary receipts were introduced in the 1920s, American investors who wanted shares of a non-U.S. listed company could only do so on international exchanges—an unrealistic option for the average person back then.

While easier in the contemporary digital age, there are still drawbacks to purchasing shares on international exchanges. One particularly daunting roadblock is currency exchange issues. Another important drawback is the regulatory differences between U.S. and foreign exchanges.

Before investing in an internationally traded company, U.S. investors have to familiarize themselves with the different financial authority’s regulations, or they could risk misunderstanding important information, such as the company’s financials. They might also need to set up a foreign account, as not all domestic brokers can trade internationally.

ADRs were developed because of the complexities involved in buying shares in foreign countries and the difficulties associated with trading at different prices and currency values. J.P. Morgan’s (JPM) predecessor firm Guaranty Trust pioneered the ADR concept. In 1927, it created and launched the first ADR, enabling U.S. investors to buy shares of famous British retailer Selfridges and helping the luxury depart store tap into global markets. The ADR was listed on the New York Curb Exchange.

A few years later, in 1931, the bank introduced the first sponsored ADR for British music company Electrical & Musical Industries (also known as EMI), the eventual home of the Beatles. Today, J.P. Morgan and BNY Mellon, another U.S. bank, continue to be actively involved in the ADR markets.

Real-World Example of ADRs

Between 1988 and 2018, German car manufacturer Volkswagen AG traded OTC in the U.S. as a sponsored ADR under the ticker VLKAY. In August 2018, Volkswagen terminated its ADR program. The next day, J.P. Morgan established an unsponsored ADR for Volkswagen, now trading under the ticker VWAGY.

Investors who held the old VLKAY ADRs had the option of cashing out, exchanging the ADRs for actual shares of Volkswagen stock—trading on German exchanges—or exchanging them for the new VWAGY ADRs.

The Bottom Line

American Depositary Receipts, or ADRs, allow Americans to invest in foreign companies. Although these companies do not ordinarily trade on the U.S. stock market, an ADR allows an investor to buy these stocks as easily as they would invest in any domestic stock. The arrangement also benefits foreign firms, allowing them to raise capital from the U.S. market.

Correction—Jan. 24, 2023: A previous version of this article wrongly stated that foreign currency exchange rate fluctuations do not affect the price of ADR and therefore ADR holders avoid any direct risks associated with fluctuations in currency rates. Actually, ADR have exchange rate risk and the price of an ADR is affected by the movements of both the company’s local share price and the national currency rate of exchange against the U.S. dollar.

What Is an American Depositary Share (ADS)?

An American depositary share (ADS) is an equity share of a non-U.S. company that is held by a U.S. depositary bank and is available for purchase by U.S. investors.

The entire issuance of shares by a foreign company is called an American Depositary Receipt (ADR), while the individual shares are referred to as ADSs. But the terms American Depositary Shares and American Depositary Receipts are often used interchangeably.

Understanding American Depositary Shares

An ADR is a negotiable certificate issued by a U.S. bank, under agreement with the foreign company, and is evidence of ownership of ADSs, much the same way a stock certificate denotes ownership of equity shares.

ADSs are meant to facilitate trading of the shares. They can trade over-the-counter (OTC) or on a major exchange such as the New York Stock Exchange (NYSE) or the Nasdaq (Nasdaq), depending on how much the foreign company is willing to comply with U.S. regulations. Listing on a major exchange generally requires the same level of reporting as that done by domestic companies, as well as adherence to Generally Accepted Accounting Principles (GAAP).

The Benefits of ADSs

Foreign companies that choose to offer shares on U.S. exchanges gain the advantage of a wider investor base, which can also lower costs of future capital. For U.S. investors, ADSs offer the opportunity to invest in foreign companies without dealing with currency conversions and other cross-border administrative hoops.

The Downside of ADSs

There is some currency risk involved in holding ADSs. Fluctuations in the exchange rate between the U.S. dollar and the foreign currency will have some effect on the price of shares as well as on any income payments, which must be converted into U.S. dollars.

Tax treatment of dividends from ADSs is also different. Most countries apply a withholding amount on dividends issued for ADRs. This withholding amount can vary. For example, Chile and Switzerland withhold 35% while France can withhold as much as 75% of the tax on dividends, in the case of non-cooperative countries within the EU. The withholding tax is in addition to the dividend tax already levied by U.S. authorities. The dividend tax can be avoided by ADR investors by filling out Form 1116 for foreign tax credit.

Real World Examples of ADSs

A single ADS often represents more than one share of common stock. Further, ADSs can “gap” up or down outside of U.S. trading hours, when trading is happening in the company’s home country and U.S. markets are closed.

For example, South Korea’s Woori Bank, a subsidiary of Woori Financial Group, has ADSs that are traded in the U.S. The bank’s ADS gapped up by $0.03 on July 20, 2016. A technical analysis of the price action on this ADS shows that for the past decade, its price continued higher two-thirds of the time after a gap up.

What Is After-Hours Trading?

After-hours trading is securities trading that starts at 4 p.m. U.S. Eastern Time after the major U.S. stock exchanges close. The after-hours trading session can run as late as 8 p.m., though volume typically thins out much earlier in the session. Trading in the after hours is conducted through electronic communication networks (ECNs).

Understanding After-Hours Trading

Traders and investors engage in after-hours trading for a variety of reasons. They may prefer trading with fewer market participants or their schedules may require it. They may want to take positions as a result of news that breaks after the close of the stock exchange. Or, they may want to close out a position before they leave on vacation.

Generally, after-hours trading refers to trading that takes place after normal market hours and up until about 8 pm. Premarket trading refers to trading that takes place before the start of normal market hours, generally from 7 a.m. until 9:25 a.m. Together, after-hours trading and premarket trading are referred to as extended-hours trading.

The precise times of extended-hours trading can depend on the ECN an investor uses or the financial institution where they place their orders. For instance, Wells Fargo allows after-hours trading from 4:05 p.m. ET until just 5 p.m.

Electronic markets (or ECNs) used in after-hours trading automatically attempt to match up buy and sell orders. If they can do so, trades are completed. If they can’t, trades remain unfilled.

After-hours trading typically only allows limit orders to buy, sell, or short, although a particular brokerage may be less restrictive. No stop, stop-limit, or orders with special instructions (such as fill or kill or all or none) are accepted. Moreover, orders are normally only good for the after-hours trading session in which they’re placed.

The maximum share amount per order is 25,000.

Quotes provided are limited to those available through the electronic market used. Investors may have access to other participating ECNs but it isn’t guaranteed.

Volume

In after-hours trading, the trading volume for a stock may spike on the initial release of news but most of the time thins out as the session progresses. The growth of volume generally slows significantly by 6 p.m. So, there is a substantial risk that investors will be trading illiquid stocks after-hours. 

Price

Not only does volume sometimes come at a premium in the after-hours trading sessions, so does price. It is not unusual for the spreads to be wide in the after-hours. The spread is the difference between the bid and the ask prices. Due to fewer shares trading, the spread may be significantly wider than during the normal trading session.

Participation

If liquidity and prices weren’t enough to make after-hours trading risky, the lack of participants may do the trick. That’s why certain investors and institutions may choose not to participate in after-hours trading, regardless of news or events.

It’s quite possible for a stock to fall sharply in the after hours only to rise once the regular trading session resumes the next day at 9:30 a.m. Many big institutional investors have a certain view of price action during after-hours trading sessions and express that view with their trades once the regular market re-opens.

Since volume is thin and spreads are wide in after-hours trading, it is much easier to push prices higher or lower. Fewer shares and trades are needed to make a substantial impact on a stock’s price. That’s why after-hours orders usually are restricted to limit orders. If your brokerage doesn’t restrict them, consider them anyway as a means to protect yourself from unexpected price swings and order fills.

Standard Trading vs. After-Hours Trading