American Express Co (STU:AEC2.PFD) Volatility: N/A% (As of Jun. 24, 2026)


What is American Express Co Volatility?

American Express Co STU:AEC2.PFD 78 Volatility is N/A% as of Jun. 24, 2026. GuruFocus rates STU:AEC2.PFD with a GF Score™ of 78/100. The stock has 3 warning signs investors should review.

Volatility is a statistical measure of the dispersion of returns for a given security or market index, it shows how the price swings around its mean. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year. In most cases, the higher the volatility, the riskier the security.

American Express Co does not have enough data to calculate Volatility.

American Express Co  (STU:AEC2.PFD) Volatility Explanation

Volatility is a statistical measure of the dispersion of returns for a given security or market index. It’s often measured as standard deviation or variance of historical returns over a certain period. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year.

Volatility reflects the uncertainty or risk of a security’s value. Generally speaking, a higher volatility suggests a higher risk, because it implies a wider fluctuation around average price. This means the price of the security can change dramatically in either direction within a short period. Conversely, a lower volatility means that the security's price is more steady, which suggests a lower risk.

Another measurement of relative volatility is Beta. Beta is a measure of systematic risk of a security or a portfolio in comparison to the market as a whole. Beta is usually compared to 1. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

American Express Co Volatility Related Terms

American Express Co  (STU:AEC2.PFD) Volatility Calculation

The annualized volatility is calculated as following:

σA=σM * √12
=√ 1/(n-1) ∑(Ri - R')^2 * √12

Where: σM is the monthly volatility, n is the number of months in the period, Ri is the security's historical monthly returns and R' is the arithmetic mean of monthly returns.

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Frequently Asked Questions Learn more about Volatility →
What does a Volatility of N/A% mean?
American Express Co (STU:AEC2.PFD) has a Volatility of N/A% as of Jun. 24, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on American Express Co and its competitors.
Is American Express Co's Volatility too high?
American Express Co's current Volatility is N/A%. Overall, American Express Co has a GF Score™ of 78/100, reflecting its overall financial health beyond just this single metric.
How does American Express Co's Volatility compare to COF and PYPL?
American Express Co's Volatility of N/A% can be compared against companies in the Credit Services industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Volatility for a Credit Services company?
A good Volatility depends on the Credit Services industry context. However, Volatility should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Volatility mean?
A high Volatility can signal that a stock is expensive relative to its fundamentals. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on American Express Co and its competitors. American Express Co's current Volatility is N/A%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is American Express Co stock overvalued right now?
American Express Co (STU:AEC2.PFD) has a current Volatility of N/A%. The current Volatility is N/A%. American Express Co's overall GF Score™ is 78/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Volatility calculated?
Volatility is calculated from a company's financial statements. For American Express Co (STU:AEC2.PFD), the current Volatility is N/A% as of Jun. 24, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

American Express Co Business Description

Address 200 Vesey Street, New York, NY, USA, 10285
American Express is a global financial institution, operating in about 130 countries, that provides consumers and businesses charge and credit card payment products. The company also operates a highly profitable merchant payment network. It operates in four segments: US consumer services, US commercial services, international card services, and global merchant and network services. In addition to payment products, the company's commercial business offers expense management tools, consulting services, and business loans.