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KossKOSS -0.66%61 Shiller PE Ratio is 375.00 as of Aug. 11, 2026, which is 306% above its 10-year median of 92.40. GuruFocus rates KOSS with a GF Score™ of 61/100 and a GF Value™ of $4.33 (Modestly Undervalued). The stock has 2 warning signs investors should review. Among 1,425 Hardware companies, Koss ranks worse than 96.21% on this metric.
As of today (2026-08-11), Koss's current share price is $3.75. Koss's E10 for the quarter that ended in Mar. 2026 was $0.01. Koss's Shiller PE Ratio for today is 375.00.
The historical rank and industry rank for Koss's Shiller PE Ratio or its related term are showing as below:
KOSS'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 8.73 Med: 92.4 Max: 1737
Current: 375
During the past years, Koss's highest Shiller PE Ratio was 1737.00. The lowest was 8.73. And the median was 92.40.
KOSS's Shiller PE Ratio is ranked worse than 96.21% of 1425
companies
in the Hardware industry
Industry Median: 30.32
vs KOSS: 375.00
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Koss's adjusted earnings per share data for the three months ended in Mar. 2026 was $-0.060. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.01 for the trailing ten years ended in Mar. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Koss Shiller PE Ratio Related Terms
Koss Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Koss's Shiller PE Ratio can be seen below:
* 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.
KOSS vs AXIL, FOXX, UEIC: Shiller PE Ratio Comparison
For the Consumer Electronics subindustry, Koss's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
Koss Shiller PE Ratio vs Hardware Industry
For the Hardware industry and Technology sector, Koss's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Koss's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Koss's Shiller PE Ratio for today is calculated as
* 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.
Koss's E10 for the quarter that ended in Mar. 2026 is calculated as:
For example, Koss's adjusted earnings per share data for the three months ended in Mar. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Koss (KOSS) has a Shiller PE Ratio of 375.00 as of Aug. 11, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Koss and its competitors. This is 306% above median its historical median of 92.40. Over the past decade, Koss' Shiller PE Ratio has ranged from 8.73 to 1,737.00. According to the industry distribution chart, Koss ranks #1371 out of 1425 companies in the Hardware industry, placing it in the top 96.2%.
Is Koss' Shiller PE Ratio too high?
Koss' current Shiller PE Ratio of 375.00 is 306% above median its 10-year median of 92.40. Over the past 10 years, this metric has ranged from a low of 8.73 to a high of 1,737.00. The Hardware industry median Shiller PE Ratio is 30.32. Koss' value of 375.00 is 1136.8% above this industry median. Based on the distribution chart, Koss ranks #1371 out of 1425 companies in the Hardware industry, which is in the bottom quartile relative to peers. Overall, Koss has a GF Score™ of 61/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Koss' Shiller PE Ratio compare to AXIL and FOXX?
According to the Hardware industry distribution chart, Koss ranks #1371 out of 1425 companies for Shiller PE Ratio. This places Koss in the lower half of its industry. The industry median Shiller PE Ratio is 30.32. Koss' value of 375.00 is 1136.8% above this benchmark. Historically, Koss' own Shiller PE Ratio has ranged from 8.73 to 1,737.00 over the past decade. While the company's 10-year median is 92.40 vs. the industry median of 30.32, Koss has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for a Hardware company?
The median Shiller PE Ratio among Hardware companies is 30.32, based on 1,425 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Koss's current Shiller PE Ratio of 375.00 is 1136.8% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Koss and its competitors. For the Hardware industry, the median Shiller PE Ratio is 30.32 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Koss's current Shiller PE Ratio is 375.00, which is 306% above median its own 10-year median of 92.40. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Koss stock overvalued right now?
Based on GuruFocus' analysis, Koss (KOSS) is currently considered Modestly Undervalued. The stock's GF Value™ is $4.33, compared to a current price of $3.75 — trading 13.4% below its estimated fair value. The current Shiller PE Ratio is 375.00, which is 306% above median its 10-year median of 92.40 and 1136.8% above the Hardware industry median of 30.32. Koss' overall GF Score™ is 61/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Koss (KOSS), the current Shiller PE Ratio is 375.00 as of Aug. 11, 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 Koss (KOSS) Overvalued in 2026?
Based on GuruFocus' analysis, Koss stock appears to be undervalued.
The current stock price of $3.75 is trading 13.4% below its estimated GF Value™ of $4.33.
GuruFocus considers Koss to be Modestly Undervalued.
Key valuation signals for KOSS:
Shiller PE Ratio: 375.00 (306% above median its 10-year median of 92.40)
GF Value™: $4.33 vs. price of $3.75 (13.4% below fair value)
Industry Position: 1136.8% above the Hardware median (#1371 of 1425)
No single metric tells the full story. See the KOSS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Koss Corp is engaged in the design, manufacture, and sale of stereo headphones and related accessory products. It operates in the audio/video industry segment of the home entertainment industry. The company markets a line of headphones, wireless Bluetooth headphones, wireless Bluetooth speakers, computer headsets, telecommunications headsets, and active noise-canceling headphones. The majority of the firm's revenue is derived from sales of stereo headphones. The Company also sells products to distributors for resale to school systems, and directly to other manufacturers for inclusion with their own products.
61GF Score
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