INTZ (Intrusion) Shiller PE Ratio: (As of Aug. 27, 2026)

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Director of Data and Quant Analytics at GuruFocus
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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.

INTZ Intrusion Inc INTZ
27 GF Score
Price $0.81
GF Value $0.42
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Intrusion Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Intrusion  (NAS:INTZ) Shiller PE Ratio Explanation

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.


Intrusion Shiller PE Ratio Related Terms


Intrusion Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Intrusion'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.

Intrusion Shiller PE Ratio Chart

Intrusion Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Intrusion Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE Ratio 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 0.00 0.00 0.00 0.00 0.00

INTZ vs TGHL, RKTO, SSGC: Shiller PE Ratio Comparison

For the Software - Infrastructure subindustry, Intrusion'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.


Intrusion Shiller PE Ratio vs Software Industry

For the Software industry and Technology sector, Intrusion's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Intrusion's Shiller PE Ratio falls into.


INTZ
27GF Score
Intrusion Inc INTZ
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Intrusion Shiller PE Ratio Calculation

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.

Intrusion's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Intrusion's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=-0.13/333.9520*333.9520
=-0.130

Current CPI (Jun. 2026) = 333.9520.

Intrusion Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 -0.400 241.428 -0.553
201612 -0.600 241.432 -0.830
201703 -0.600 243.801 -0.822
201706 -0.800 244.955 -1.091
201709 0.800 246.819 1.082
201712 0.200 246.524 0.271
201803 0.400 249.554 0.535
201806 0.600 251.989 0.795
201809 0.800 252.439 1.058
201812 1.000 251.233 1.329
201903 1.200 254.202 1.576
201906 2.200 256.143 2.868
201909 1.800 256.759 2.341
201912 0.400 256.974 0.520
202003 -0.800 258.115 -1.035
202006 -1.000 257.797 -1.295
202009 -2.000 260.280 -2.566
202012 -4.600 260.474 -5.898
202103 -4.400 264.877 -5.547
202106 -5.600 271.696 -6.883
202109 -6.800 274.310 -8.278
202112 -4.000 278.802 -4.791
202203 -4.200 287.504 -4.879
202206 -4.200 296.311 -4.734
202209 -3.000 296.808 -3.375
202212 -5.000 296.797 -5.626
202303 -4.490 301.836 -4.968
202306 -2.920 305.109 -3.196
202309 -2.780 307.789 -3.016
202312 -1.800 306.746 -1.960
202403 -0.940 312.332 -1.005
202406 -0.530 314.175 -0.563
202409 -0.350 315.301 -0.371
202412 -0.360 315.605 -0.381
202503 -0.110 319.799 -0.115
202506 -0.100 322.561 -0.104
202509 -0.100 324.800 -0.103
202512 -0.140 324.054 -0.144
202603 -0.180 330.213 -0.182
202606 -0.130 333.952 -0.130

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.

Is Intrusion (INTZ) Overvalued in 2026?

Based on GuruFocus' analysis, Intrusion stock appears to be overvalued. The current stock price of $0.81 is trading 92.9% above its estimated GF Value™ of $0.42. GuruFocus considers Intrusion to be Significantly Overvalued.

Key valuation signals for INTZ:

  • Shiller PE Ratio:
  • GF Value™: $0.42 vs. price of $0.81 (92.9% above fair value)
  • GF Score™: 27/100 with 5 warning signs

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


Intrusion Business Description

Address 101 East Park Boulevard, Suite 1200, Plano, TX, USA, 75074
Intrusion Inc is a cybersecurity company based in Plano, Texas. The company offers its customers access to its exclusive threat intelligence database containing the historical data, known associations, and reputational behavior of Internet Protocol addresses. Its platform combines threat intelligence, malicious traffic identification, and automated threat response, and is designed to help organizations proactively identify and stop malicious activity in their networks. Its solutions include INTRUSION Shield, INTRUSION TraceCop, and INTRUSION Savant. The company operates in single segment.
27GF Score

Get the complete analysis for INTZ

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

$0.81
Price
$0.42
GF Value