I'll (TSE:3854) Cyclically Adjusted Book per Share: 円222.10 (As of Jan. 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.

TSE:3854 I'll Inc TSE:3854
89 GF Score
Price 円2,380.00
GF Value 円3,210.52
Valuation Modestly Undervalued
! 3 Warning Signs
View Full Analysis

What is I'll Cyclically Adjusted Book per Share?

I'll TSE:3854 -0.83% 89 Cyclically Adjusted Book per Share is 円222.10 as of Jan. 2026. GuruFocus rates TSE:3854 with a GF Score™ of 89/100 and a GF Value™ of 円3,210.52 (Modestly Undervalued). The stock has 3 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.

I'll's adjusted book value per share for the three months ended in Jan. 2026 was 円494.647. 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 円222.10 for the trailing ten years ended in Jan. 2026.

During the past 12 months, I'll's average Cyclically Adjusted Book Growth Rate was 16.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 22.60% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 21.20% 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 I'll was 22.60% per year. The lowest was 13.20% per year. And the median was 19.60% per year.

As of today (2026-07-16), I'll's current stock price is 円2380.00. I'll's Cyclically Adjusted Book per Share for the quarter that ended in Jan. 2026 was 円222.10. I'll's Cyclically Adjusted PB Ratio of today is 10.72.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of I'll was 31.69. The lowest was 6.97. And the median was 16.31.


I'll  (TSE:3854) 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.

I'll's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=2380.00/222.10
=10.72

* 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 I'll was 31.69. The lowest was 6.97. And the median was 16.31.


Be Aware

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


I'll Cyclically Adjusted Book per Share Related Terms


I'll Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for I'll'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.

I'll Cyclically Adjusted Book per Share Chart

I'll Annual Data
Trend Jul16 Jul17 Jul18 Jul19 Jul20 Jul21 Jul22 Jul23 Jul24 Jul25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 90.45 108.94 133.74 165.55 200.84

I'll Quarterly Data
Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Oct24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
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 190.98 200.84 211.73 222.10 0.00

TSE:3854 vs IBM, ACN, FISV: Cyclically Adjusted Book per Share Comparison

For the Information Technology Services subindustry, I'll'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.


I'll Cyclically Adjusted PB Ratio vs Software Industry

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

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


TSE:3854
89GF Score
I'll Inc TSE:3854
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

I'll 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, I'll's adjusted Book Value per Share data for the three months ended in Jan. 2026 was:

Adj_Book= Book Value per Share /CPI of Jan. 2026 (Change)*Current CPI (Jan. 2026)
=494.647/112.9000*112.9000
=494.647

Current CPI (Jan. 2026) = 112.9000.

I'll Quarterly Data

Book Value per Share CPI Adj_Book
201604 75.821 98.100 87.260
201607 75.769 97.900 87.378
201610 70.810 98.600 81.080
201701 76.933 98.200 88.449
201704 81.431 98.500 93.336
201707 86.060 98.300 98.842
201710 85.103 98.800 97.248
201801 87.697 99.500 99.507
201804 91.840 99.100 104.629
201807 95.736 99.200 108.958
201810 94.761 100.200 106.772
201901 101.132 99.700 114.522
201904 105.187 100.000 118.756
201907 113.868 99.800 128.815
201910 130.900 100.400 147.197
202001 135.922 100.500 152.692
202004 142.997 100.200 161.121
202007 148.330 100.000 167.465
202010 155.256 99.800 175.635
202101 166.437 99.800 188.284
202104 168.841 99.100 192.353
202107 183.325 99.700 207.597
202110 189.413 99.900 214.061
202201 203.394 100.300 228.945
202204 212.858 101.500 236.765
202207 228.305 102.300 251.961
202210 236.986 103.700 258.011
202301 262.298 104.700 282.841
202304 276.120 105.100 296.612
202307 309.208 105.700 330.270
202310 318.638 107.100 335.894
202401 347.976 106.900 367.507
202404 359.330 107.700 376.679
202407 386.748 108.600 402.061
202410 391.225 109.500 403.373
202501 305.813 111.200 310.488
202504 371.990 111.500 376.661
202507 450.953 111.900 454.983
202510 453.786 112.800 454.188
202601 494.647 112.900 494.647

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 円222.10 mean?
I'll (TSE:3854) has a Cyclically Adjusted Book per Share of 円222.10 as of Jan. 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 I'll and its competitors.
Is I'll's Cyclically Adjusted Book per Share too high?
I'll's current Cyclically Adjusted Book per Share is 円222.10. Overall, I'll has a GF Score™ of 89/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does I'll's Cyclically Adjusted Book per Share compare to IBM and ACN?
I'll's Cyclically Adjusted Book per Share of 円222.10 can be compared against companies in the Software 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 Software company?
A good Cyclically Adjusted Book per Share depends on the Software 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 I'll and its competitors. I'll's current Cyclically Adjusted Book per Share is 円222.10. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is I'll stock overvalued right now?
Based on GuruFocus' analysis, I'll (TSE:3854) is currently considered Modestly Undervalued. The stock's GF Value™ is 円3,210.52, compared to a current price of 円2,380.00 — trading 25.9% below its estimated fair value. The current Cyclically Adjusted Book per Share is 円222.10. I'll's overall GF Score™ is 89/100 with 3 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 I'll (TSE:3854), the current Cyclically Adjusted Book per Share is 円222.10 as of Jan. 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 I'll (TSE:3854) Overvalued in 2026?

Based on GuruFocus' analysis, I'll stock appears to be undervalued. The current stock price of 円2,380.00 is trading 25.9% below its estimated GF Value™ of 円3,210.52. GuruFocus considers I'll to be Modestly Undervalued.

Key valuation signals for TSE:3854:

  • Cyclically Adjusted Book per Share: 円222.10
  • GF Value™: 円3,210.52 vs. price of 円2,380.00 (25.9% below fair value)
  • GF Score™: 89/100 with 3 warning signs

No single metric tells the full story. See the TSE:3854 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


I'll Business Description

Address 2-1-23, Kita-ku, Osaka, JPN
I'll Inc is engaged in the provision of system integration services for medium and small size companies. The company is engaged in two divisions namely System solution business, and Web solution business. The system solution provides customers with basic system construction, hardware maintenance, system operation support, network construction, and security management, and the Web solution offers website creation and operation, customer business analysis, and others. It is also develops unified management software, point unified management software and other operations.
89GF Score

Get the complete analysis for TSE:3854

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

円2,380.00
Price
円3,210.52
GF Value