Mercury Systems (STU:MCY) Cyclically Adjusted Book per Share: €24.24 (As of Jun. 2026)

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STU:MCY Mercury Systems Inc STU:MCY
66 GF Score
Price €75.20
GF Value €40.80
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Mercury Systems Cyclically Adjusted Book per Share?

Mercury Systems STU:MCY +7.52% 66 Cyclically Adjusted Book per Share is €24.24 as of Jun. 2026. GuruFocus rates STU:MCY with a GF Score™ of 66/100 and a GF Value™ of €40.80 (Significantly Overvalued). The stock has 4 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.

Mercury Systems's adjusted book value per share for the three months ended in Jun. 2026 was €21.976. 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 €24.24 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Mercury Systems's average Cyclically Adjusted Book Growth Rate was 7.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 7.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 9.60% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 11.70% 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 Mercury Systems was 15.60% per year. The lowest was 1.10% per year. And the median was 5.70% per year.

As of today (2026-09-16), Mercury Systems's current stock price is €75.20. Mercury Systems's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €24.24. Mercury Systems's Cyclically Adjusted PB Ratio of today is 3.10.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Mercury Systems was 6.68. The lowest was 1.17. And the median was 3.29.


Mercury Systems  (STU:MCY) 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.

Mercury Systems's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=75.20/24.237
=3.10

* 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 Mercury Systems was 6.68. The lowest was 1.17. And the median was 3.29.


Be Aware

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


Mercury Systems Cyclically Adjusted Book per Share Related Terms


Mercury Systems Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Mercury Systems'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.

Mercury Systems Cyclically Adjusted Book per Share Chart

Mercury Systems Annual Data
Trend Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25 Jun26
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 18.01 19.98 21.93 23.34 24.83

Mercury Systems Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 22.67 23.03 23.16 23.80 24.24

STU:MCY vs AIR, BETA, KRMN: Cyclically Adjusted Book per Share Comparison

For the Aerospace & Defense subindustry, Mercury Systems'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.


Mercury Systems Cyclically Adjusted PB Ratio vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, Mercury Systems's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:MCY
66GF Score
Mercury Systems Inc STU:MCY
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Mercury Systems 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, Mercury Systems's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book= Book Value per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=21.976/333.9520*333.9520
=21.976

Current CPI (Jun. 2026) = 333.9520.

Mercury Systems Quarterly Data

Book Value per Share CPI Adj_Book
201609 10.812 241.428 14.956
201612 11.711 241.432 16.199
201703 14.409 243.801 19.737
201706 13.736 244.955 18.727
201709 13.290 246.819 17.982
201712 13.323 246.524 18.048
201803 13.120 249.554 17.557
201806 14.089 251.989 18.672
201809 14.175 252.439 18.752
201812 14.739 251.233 19.592
201903 15.307 254.202 20.109
201906 20.796 256.143 27.113
201909 21.787 256.759 28.337
201912 21.506 256.974 27.948
202003 22.519 258.115 29.135
202006 22.539 257.797 29.197
202009 21.811 260.280 27.985
202012 21.209 260.474 27.192
202103 22.426 264.877 28.274
202106 22.878 271.696 28.120
202109 23.001 274.310 28.002
202112 23.527 278.802 28.181
202203 24.256 287.504 28.175
202206 26.407 296.311 29.762
202209 27.962 296.808 31.461
202212 25.668 296.797 28.881
202303 25.350 301.836 28.047
202306 25.210 305.109 27.593
202309 25.410 307.789 27.570
202312 23.660 306.746 25.758
202403 23.565 312.332 25.196
202406 23.655 314.175 25.144
202409 22.377 315.301 23.701
202412 24.040 315.605 25.438
202503 22.826 319.799 23.836
202506 21.274 322.561 22.025
202509 21.124 324.800 21.719
202512 20.936 324.054 21.575
202603 21.555 330.213 21.799
202606 21.976 333.952 21.976

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 €24.24 mean?
Mercury Systems (STU:MCY) has a Cyclically Adjusted Book per Share of €24.24 as of Jun. 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 Mercury Systems and its competitors.
Is Mercury Systems' Cyclically Adjusted Book per Share too high?
Mercury Systems' current Cyclically Adjusted Book per Share is €24.24. Overall, Mercury Systems has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Mercury Systems' Cyclically Adjusted Book per Share compare to AIR and BETA?
Mercury Systems' Cyclically Adjusted Book per Share of €24.24 can be compared against companies in the Aerospace & Defense 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 an Aerospace & Defense company?
A good Cyclically Adjusted Book per Share depends on the Aerospace & Defense 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 Mercury Systems and its competitors. Mercury Systems's current Cyclically Adjusted Book per Share is €24.24. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Mercury Systems stock overvalued right now?
Based on GuruFocus' analysis, Mercury Systems (STU:MCY) is currently considered Significantly Overvalued. The stock's GF Value™ is €40.80, compared to a current price of €75.20 — trading 84.3% above its estimated fair value. The current Cyclically Adjusted Book per Share is €24.24. Mercury Systems' overall GF Score™ is 66/100 with 4 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 Mercury Systems (STU:MCY), the current Cyclically Adjusted Book per Share is €24.24 as of Jun. 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 Mercury Systems (STU:MCY) Overvalued in 2026?

Based on GuruFocus' analysis, Mercury Systems stock appears to be overvalued. The current stock price of €75.20 is trading 84.3% above its estimated GF Value™ of €40.80. GuruFocus considers Mercury Systems to be Significantly Overvalued.

Key valuation signals for STU:MCY:

  • Cyclically Adjusted Book per Share: €24.24
  • GF Value™: €40.80 vs. price of €75.20 (84.3% above fair value)
  • GF Score™: 66/100 with 4 warning signs

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


Mercury Systems Business Description

Address 50 Minuteman Road, Andover, MA, USA, 01810
Mercury Systems Inc is a commercial technology company serving the aerospace and defense industry. The company envisions, creates, and delivers secure open architecture solutions powering a broad range of mission-critical applications in challenging and demanding environments. Its Mercury Processing Platform spans the full breadth of signal processing from radio frequency front end to the human-machine interface to convert meaningful data, gathered in remote and hostile environments, into critical decisions. The company manufactures components, products, modules, and subsystems and sells to defense prime contractors, the U.S. government, original equipment manufacturers, and commercial aerospace companies. Geographically, it derives maximum revenue from the United States.
66GF Score

Get the complete analysis for STU:MCY

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

€75.20
Price
€40.80
GF Value