DAL (Delta Air Lines) 1-Year Sharpe Ratio: 2.16 (As of Jul. 15, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

DAL Delta Air Lines Inc DAL
81 GF Score
Price $85.51
GF Value $58.19
Valuation Significantly Overvalued
! 6 Warning Signs
View Full Analysis

What is Delta Air Lines 1-Year Sharpe Ratio?

Delta Air Lines DAL -0.79% 81 1-Year Sharpe Ratio is 2.16 as of Jul. 15, 2026. GuruFocus rates DAL with a GF Score™ of 81/100 and a GF Value™ of $58.19 (Significantly Overvalued). The stock has 6 warning signs investors should review.

The 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past year. As of today (2026-07-15), Delta Air Lines's 1-Year Sharpe Ratio is 2.16.

Delta Air Lines  (NYSE:DAL) 1-Year Sharpe Ratio Explanation

The 1-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past year. It is calculated as the annualized result of the average monthly excess return divided by its standard deviation over the past year. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.

Delta Air Lines 1-Year Sharpe Ratio Related Terms

DAL vs UAL, LUV, AAL: 1-Year Sharpe Ratio Comparison

For the Airlines subindustry, Delta Air Lines's 1-Year Sharpe Ratio, along with its competitors' market caps and 1-Year Sharpe Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

Delta Air Lines 1-Year Sharpe Ratio vs Transportation Industry

For the Transportation industry and Industrials sector, Delta Air Lines's 1-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where Delta Air Lines's 1-Year Sharpe Ratio falls into.


DAL
81GF Score
Delta Air Lines Inc DAL
1-Year Sharpe Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Delta Air Lines 1-Year Sharpe Ratio Calculation

The 1-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset. A stock / portfolio's 1-Year Sharpe Ratio can be calculated by dividing the difference between the one-year returns of the investment and the risk-free rate, by the standard deviation of the investment returns over one year.

Frequently Asked Questions Learn more about 1-Year Sharpe Ratio →
What does a 1-Year Sharpe Ratio of 2.16 mean?
Delta Air Lines (DAL) has a 1-Year Sharpe Ratio of 2.16 as of Jul. 15, 2026. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Delta Air Lines and its competitors.
Is Delta Air Lines' 1-Year Sharpe Ratio too high?
Delta Air Lines' current 1-Year Sharpe Ratio is 2.16. Overall, Delta Air Lines has a GF Score™ of 81/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Delta Air Lines' 1-Year Sharpe Ratio compare to UAL and LUV?
Delta Air Lines' 1-Year Sharpe Ratio of 2.16 can be compared against companies in the Transportation industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 1-Year Sharpe Ratio for a Transportation company?
A good 1-Year Sharpe Ratio depends on the Transportation industry context. However, 1-Year Sharpe Ratio 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 1-Year Sharpe Ratio mean?
A high 1-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Delta Air Lines and its competitors. Delta Air Lines's current 1-Year Sharpe Ratio is 2.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Delta Air Lines stock overvalued right now?
Based on GuruFocus' analysis, Delta Air Lines (DAL) is currently considered Significantly Overvalued. The stock's GF Value™ is $58.19, compared to a current price of $85.51 — trading 46.9% above its estimated fair value. The current 1-Year Sharpe Ratio is 2.16. Delta Air Lines' overall GF Score™ is 81/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 1-Year Sharpe Ratio calculated?
1-Year Sharpe Ratio is calculated from a company's financial statements. For Delta Air Lines (DAL), the current 1-Year Sharpe Ratio is 2.16 as of Jul. 15, 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.

Is Delta Air Lines (DAL) Overvalued in 2026?

Based on GuruFocus' analysis, Delta Air Lines stock appears to be overvalued. The current stock price of $85.51 is trading 46.9% above its estimated GF Value™ of $58.19. GuruFocus considers Delta Air Lines to be Significantly Overvalued.

Key valuation signals for DAL:

  • 1-Year Sharpe Ratio: 2.16
  • GF Value™: $58.19 vs. price of $85.51 (46.9% above fair value)
  • GF Score™: 81/100 with 6 warning signs

No single metric tells the full story. See the DAL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Delta Air Lines Business Description

Address Post Office Box 20706, Atlanta, GA, USA, 30320-6001
Atlanta-based Delta Air Lines is one of the world's largest airlines, with a network of over 300 destinations in more than 50 countries. Delta operates a hub-and-spoke network, where it gathers and distributes passengers across the globe through its biggest hubs in Atlanta, New York, Salt Lake City, Detroit, Seattle, and Minneapolis-St. Paul. Delta has historically earned most of its international revenue and profits from flying passengers over the Atlantic Ocean.
81GF Score

Get the complete analysis for DAL

1-Year Sharpe Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$85.51
Price
$58.19
GF Value