Koss (KOSS) Cyclically Adjusted Book per Share: $3.08 (As of Mar. 2026)


KOSS Koss Corp KOSS
60 GF Score
Price $4.01
GF Value $4.38
Valuation Fairly Valued
! 2 Warning Signs
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What is Koss Cyclically Adjusted Book per Share?

Koss KOSS +1.26% 60 Cyclically Adjusted Book per Share is $3.08 as of Mar. 2026. GuruFocus rates KOSS with a GF Score™ of 60/100 and a GF Value™ of $4.38 (Fairly Valued). The stock has 2 warning signs investors should review.

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Koss's adjusted book value per share for the three months ended in Mar. 2026 was $3.141. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $3.08 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Koss's average Cyclically Adjusted Book Growth Rate was 3.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 3.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 4.90% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 0.80% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Koss was 11.40% per year. The lowest was -3.90% per year. And the median was 3.90% per year.

As of today (2026-06-25), Koss's current stock price is $4.01. Koss's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $3.08. Koss's Cyclically Adjusted PB Ratio of today is 1.30.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Koss was 26.78. The lowest was 0.35. And the median was 1.18.


Koss  (NAS:KOSS) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Koss's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=4.01/3.08
=1.30

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Koss was 26.78. The lowest was 0.35. And the median was 1.18.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Koss Cyclically Adjusted Book per Share Related Terms


Koss Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Koss's Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share Chart

Koss Annual Data
Trend Jun16 Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.49 2.68 2.79 2.89 3.01

Koss Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 2.98 3.01 3.04 3.03 3.08

KOSS vs AXIL, UEIC, FOXX: Cyclically Adjusted Book per Share Comparison

For the Consumer Electronics subindustry, Koss's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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 Cyclically Adjusted PB Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Koss's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Koss's Cyclically Adjusted PB Ratio falls into.


KOSS
60GF Score
Koss Corp KOSS
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
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Koss Cyclically Adjusted Book per Share Calculation

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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.

For example, Koss's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=3.141/330.2130*330.2130
=3.141

Current CPI (Mar. 2026) = 330.2130.

Koss Quarterly Data

Book Value per Share CPI Adj_Book
201606 2.463 241.018 3.374
201609 2.487 241.428 3.402
201612 2.518 241.432 3.444
201703 2.378 243.801 3.221
201706 2.380 244.955 3.208
201709 2.394 246.819 3.203
201712 2.007 246.524 2.688
201803 1.908 249.554 2.525
201806 1.924 251.989 2.521
201809 1.947 252.439 2.547
201812 1.978 251.233 2.600
201903 2.014 254.202 2.616
201906 2.035 256.143 2.623
201909 2.014 256.759 2.590
201912 2.003 256.974 2.574
202003 2.009 258.115 2.570
202006 2.047 257.797 2.622
202009 2.085 260.280 2.645
202012 2.174 260.474 2.756
202103 2.219 264.877 2.766
202106 2.274 271.696 2.764
202109 2.296 274.310 2.764
202112 2.373 278.802 2.811
202203 2.430 287.504 2.791
202206 2.481 296.311 2.765
202209 3.573 296.808 3.975
202212 3.455 296.797 3.844
202303 3.433 301.836 3.756
202306 3.444 305.109 3.727
202309 3.384 307.789 3.631
202312 3.393 306.746 3.653
202403 3.363 312.332 3.556
202406 3.349 314.175 3.520
202409 3.299 315.301 3.455
202412 3.306 315.605 3.459
202503 3.273 319.799 3.380
202506 3.237 322.561 3.314
202509 3.263 324.800 3.317
202512 3.202 324.054 3.263
202603 3.141 330.213 3.141

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of $3.08 mean?
Koss (KOSS) has a Cyclically Adjusted Book per Share of $3.08 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Koss and its competitors.
Is Koss' Cyclically Adjusted Book per Share too high?
Koss' current Cyclically Adjusted Book per Share is $3.08. Overall, Koss has a GF Score™ of 60/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Koss' Cyclically Adjusted Book per Share compare to AXIL and UEIC?
Koss' Cyclically Adjusted Book per Share of $3.08 can be compared against companies in the Hardware industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Hardware company?
A good Cyclically Adjusted Book per Share depends on the Hardware industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Koss and its competitors. Koss's current Cyclically Adjusted Book per Share is $3.08. 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 Fairly Valued. The stock's GF Value™ is $4.38, compared to a current price of $4.01 — trading 8.4% below its estimated fair value. The current Cyclically Adjusted Book per Share is $3.08. Koss' overall GF Score™ is 60/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Koss (KOSS), the current Cyclically Adjusted Book per Share is $3.08 as of Mar. 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 $4.01 is trading 8.4% below its estimated GF Value™ of $4.38. GuruFocus considers Koss to be Fairly Valued.

Key valuation signals for KOSS:

  • Cyclically Adjusted Book per Share: $3.08
  • GF Value™: $4.38 vs. price of $4.01 (8.4% below fair value)
  • GF Score™: 60/100 with 2 warning signs

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 Business Description

Address 4129 North Port Washington Avenue, Milwaukee, WI, USA, 53212
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.
60GF Score

Get the complete analysis for KOSS

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$4.01
Price
$4.38
GF Value