Turkiye Is Bankasi AS (IST:ISBTR) Cyclically Adjusted Book per Share: ₺0.00 (As of Jun. 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.

IST:ISBTR Turkiye Is Bankasi AS IST:ISBTR
12 GF Score
Price ₺515,550.00
GF Value ₺561,950.65
Valuation Fairly Valued
! 2 Warning Signs
View Full Analysis

What is Turkiye Is Bankasi AS Cyclically Adjusted Book per Share?

Turkiye Is Bankasi AS IST:ISBTR -2.36% 12 Cyclically Adjusted Book per Share is ₺0.00 as of Jun. 2026. GuruFocus rates IST:ISBTR with a GF Score™ of 12/100 and a GF Value™ of ₺561,950.65 (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.

Turkiye Is Bankasi AS's adjusted book value per share for the three months ended in Jun. 2026 was ₺18.164. 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 ₺0.00 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Turkiye Is Bankasi AS's average Cyclically Adjusted Book Growth Rate was 33.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 33.20% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 30.90% 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 Turkiye Is Bankasi AS was 33.80% per year. The lowest was 22.00% per year. And the median was 30.50% per year.

As of today (2026-08-27), Turkiye Is Bankasi AS's current stock price is ₺515550.00. Turkiye Is Bankasi AS's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was ₺0.00. Turkiye Is Bankasi AS's Cyclically Adjusted PB Ratio of today is .

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Turkiye Is Bankasi AS was 4.58. The lowest was 0.52. And the median was 1.67.


Turkiye Is Bankasi AS  (IST:ISBTR) 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Turkiye Is Bankasi AS was 4.58. The lowest was 0.52. And the median was 1.67.


Be Aware

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


Turkiye Is Bankasi AS Cyclically Adjusted Book per Share Related Terms


Turkiye Is Bankasi AS Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Turkiye Is Bankasi AS'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.

Turkiye Is Bankasi AS Cyclically Adjusted Book per Share Chart

Turkiye Is Bankasi AS Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 69,724.37 24,422.09 203,743.69 169,499.45 185,731.21

Turkiye Is Bankasi AS 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 181,759.55 225,851.59 185,731.21 193,842.37 0.00

Turkiye Is Bankasi AS Cyclically Adjusted Book per Share Competitor Comparison

For the Banks - Regional subindustry, Turkiye Is Bankasi AS'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.


Turkiye Is Bankasi AS Cyclically Adjusted PB Ratio vs Banks Industry

For the Banks industry and Financial Services sector, Turkiye Is Bankasi AS's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Turkiye Is Bankasi AS's Cyclically Adjusted PB Ratio falls into.


IST:ISBTR
12GF Score
Turkiye Is Bankasi AS IST:ISBTR
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Turkiye Is Bankasi AS 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, Turkiye Is Bankasi AS'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)
=18.164/333.9520*333.9520
=18.164

Current CPI (Jun. 2026) = 333.9520.

Turkiye Is Bankasi AS Quarterly Data

Book Value per Share CPI Adj_Book
201609 1.423 241.428 1.968
201612 1.593 241.432 2.203
201703 1.528 243.801 2.093
201706 1.713 244.955 2.335
201709 1.645 246.819 2.226
201712 1.717 246.524 2.326
201803 1.787 249.554 2.391
201806 1.805 251.989 2.392
201809 1.872 252.439 2.476
201812 1.984 251.233 2.637
201903 2.003 254.202 2.631
201906 2.092 256.143 2.727
201909 2.179 256.759 2.834
201912 2.346 256.974 3.049
202003 2.335 258.115 3.021
202006 2.508 257.797 3.249
202009 2.585 260.280 3.317
202012 2.698 260.474 3.459
202103 2.653 264.877 3.345
202106 2.780 271.696 3.417
202109 2.991 274.310 3.641
202112 3.477 278.802 4.165
202203 4.342 287.504 5.043
202206 4.995 296.311 5.630
202209 5.864 296.808 6.598
202212 7.650 296.797 8.608
202303 7.867 301.836 8.704
202306 8.330 305.109 9.117
202309 8.843 307.789 9.595
202312 10.728 306.746 11.679
202403 11.009 312.332 11.771
202406 11.422 314.175 12.141
202409 11.622 315.301 12.309
202412 12.727 315.605 13.467
202503 13.044 319.799 13.621
202506 14.416 322.561 14.925
202509 15.215 324.800 15.644
202512 17.122 324.054 17.645
202603 16.842 330.213 17.033
202606 18.164 333.952 18.164

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 ₺0.00 mean?
Turkiye Is Bankasi AS (IST:ISBTR) has a Cyclically Adjusted Book per Share of ₺0.00 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 Turkiye Is Bankasi AS and its competitors.
Is Turkiye Is Bankasi AS's Cyclically Adjusted Book per Share too high?
Turkiye Is Bankasi AS's current Cyclically Adjusted Book per Share is ₺0.00. Overall, Turkiye Is Bankasi AS has a GF Score™ of 12/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Turkiye Is Bankasi AS's Cyclically Adjusted Book per Share compare to competitors?
Turkiye Is Bankasi AS's Cyclically Adjusted Book per Share of ₺0.00 can be compared against companies in the Banks 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 Banks company?
A good Cyclically Adjusted Book per Share depends on the Banks 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 Turkiye Is Bankasi AS and its competitors. Turkiye Is Bankasi AS's current Cyclically Adjusted Book per Share is ₺0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Turkiye Is Bankasi AS stock overvalued right now?
Based on GuruFocus' analysis, Turkiye Is Bankasi AS (IST:ISBTR) is currently considered Fairly Valued. The stock's GF Value™ is ₺561,950.65, compared to a current price of ₺515,550.00 — trading 8.3% below its estimated fair value. The current Cyclically Adjusted Book per Share is ₺0.00. Turkiye Is Bankasi AS's overall GF Score™ is 12/100 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 Turkiye Is Bankasi AS (IST:ISBTR), the current Cyclically Adjusted Book per Share is ₺0.00 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 Turkiye Is Bankasi AS (IST:ISBTR) Overvalued in 2026?

Based on GuruFocus' analysis, Turkiye Is Bankasi AS stock appears to be undervalued. The current stock price of ₺515,550.00 is trading 8.3% below its estimated GF Value™ of ₺561,950.65. GuruFocus considers Turkiye Is Bankasi AS to be Fairly Valued.

Key valuation signals for IST:ISBTR:

  • Cyclically Adjusted Book per Share: ₺0.00
  • GF Value™: ₺561,950.65 vs. price of ₺515,550.00 (8.3% below fair value)
  • GF Score™: 12/100 with 2 warning signs

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


Turkiye Is Bankasi AS Business Description

Other Exchanges ISCTR:Turkey
Address Is Kuleleri, Levent, Istanbul, TUR, 34330
Turkiye Is Bankasi AS is a Turkish financial services group with operations in Europe, Asia, and the Middle East. The group provides banking services as well as insurance, pension, asset management, venture capital, investment banking, leasing and factoring, and brokerage and custody, among other services.
12GF Score

Get the complete analysis for IST:ISBTR

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

₺515,550.00
Price
₺561,950.65
GF Value