Interactive Brokers Group (BSP:IBKR34) Cyclically Adjusted Book per Share: R$2.39 (As of Mar. 2026)

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BSP:IBKR34 Interactive Brokers Group Inc BSP:IBKR34
62 GF Score
Price R$28.05
GF Value R$12.61
Valuation Significantly Overvalued
! 8 Warning Signs
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What is Interactive Brokers Group Cyclically Adjusted Book per Share?

Interactive Brokers Group BSP:IBKR34 -1.89% 62 Cyclically Adjusted Book per Share is R$2.39 as of Mar. 2026. GuruFocus rates BSP:IBKR34 with a GF Score™ of 62/100 and a GF Value™ of R$12.61 (Significantly Overvalued). The stock has 8 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.

Interactive Brokers Group's adjusted book value per share for the three months ended in Mar. 2026 was R$4.098. 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 R$2.39 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Interactive Brokers Group's average Cyclically Adjusted Book Growth Rate was 14.60% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 12.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 12.50% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 8.40% 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 Interactive Brokers Group was 15.80% per year. The lowest was -5.50% per year. And the median was 11.70% per year.

As of today (2026-08-02), Interactive Brokers Group's current stock price is R$28.05. Interactive Brokers Group's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was R$2.39. Interactive Brokers Group's Cyclically Adjusted PB Ratio of today is 11.74.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Interactive Brokers Group was 13.04. The lowest was 2.16. And the median was 4.18.


Interactive Brokers Group  (BSP:IBKR34) 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.

Interactive Brokers Group's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=28.05/2.39
=11.74

* 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 Interactive Brokers Group was 13.04. The lowest was 2.16. And the median was 4.18.


Be Aware

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


Interactive Brokers Group Cyclically Adjusted Book per Share Related Terms


Interactive Brokers Group Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Interactive Brokers Group'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.

Interactive Brokers Group Cyclically Adjusted Book per Share Chart

Interactive Brokers Group 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 0.00 0.00 0.00 0.00 2.50

Interactive Brokers Group 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 0.00 2.29 2.50 2.39 0.00

BSP:IBKR34 vs LPLA, TW, CRCL: Cyclically Adjusted Book per Share Comparison

For the Capital Markets subindustry, Interactive Brokers Group'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.


Interactive Brokers Group Cyclically Adjusted PB Ratio vs Capital Markets Industry

For the Capital Markets industry and Financial Services sector, Interactive Brokers Group's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


BSP:IBKR34
62GF Score
Interactive Brokers Group Inc BSP:IBKR34
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Interactive Brokers Group 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, Interactive Brokers Group'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)
=4.098/330.2130*330.2130
=4.098

Current CPI (Mar. 2026) = 330.2130.

Interactive Brokers Group Quarterly Data

Book Value per Share CPI Adj_Book
201606 0.745 241.018 1.021
201609 0.733 241.428 1.003
201612 0.751 241.432 1.027
201703 0.717 243.801 0.971
201706 0.769 244.955 1.037
201709 0.751 246.819 1.005
201712 0.785 246.524 1.051
201803 0.811 249.554 1.073
201806 0.948 251.989 1.242
201809 1.063 252.439 1.390
201812 1.036 251.233 1.362
201903 1.059 254.202 1.376
201906 1.084 256.143 1.397
201909 1.178 256.759 1.515
201912 1.213 256.974 1.559
202003 1.478 258.115 1.891
202006 1.597 257.797 2.046
202009 1.717 260.280 2.178
202012 1.728 260.474 2.191
202103 1.974 264.877 2.461
202106 1.835 271.696 2.230
202109 1.959 274.310 2.358
202112 2.155 278.802 2.552
202203 1.944 287.504 2.233
202206 1.999 296.311 2.228
202209 2.132 296.808 2.372
202212 2.269 296.797 2.524
202303 2.372 301.836 2.595
202306 2.296 305.109 2.485
202309 2.445 307.789 2.623
202312 2.563 306.746 2.759
202403 2.711 312.332 2.866
202406 3.046 314.175 3.201
202409 3.294 315.301 3.450
202412 3.746 315.605 3.919
202503 3.718 319.799 3.839
202506 3.789 322.561 3.879
202509 3.843 324.800 3.907
202512 4.106 324.054 4.184
202603 4.098 330.213 4.098

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 R$2.39 mean?
Interactive Brokers Group (BSP:IBKR34) has a Cyclically Adjusted Book per Share of R$2.39 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 Interactive Brokers Group and its competitors.
Is Interactive Brokers Group's Cyclically Adjusted Book per Share too high?
Interactive Brokers Group's current Cyclically Adjusted Book per Share is R$2.39. Overall, Interactive Brokers Group has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Interactive Brokers Group's Cyclically Adjusted Book per Share compare to LPLA and TW?
Interactive Brokers Group's Cyclically Adjusted Book per Share of R$2.39 can be compared against companies in the Capital Markets 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 Capital Markets company?
A good Cyclically Adjusted Book per Share depends on the Capital Markets 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 Interactive Brokers Group and its competitors. Interactive Brokers Group's current Cyclically Adjusted Book per Share is R$2.39. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Interactive Brokers Group stock overvalued right now?
Based on GuruFocus' analysis, Interactive Brokers Group (BSP:IBKR34) is currently considered Significantly Overvalued. The stock's GF Value™ is R$12.61, compared to a current price of R$28.05 — trading 122.4% above its estimated fair value. The current Cyclically Adjusted Book per Share is R$2.39. Interactive Brokers Group's overall GF Score™ is 62/100 with 8 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 Interactive Brokers Group (BSP:IBKR34), the current Cyclically Adjusted Book per Share is R$2.39 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 Interactive Brokers Group (BSP:IBKR34) Overvalued in 2026?

Based on GuruFocus' analysis, Interactive Brokers Group stock appears to be overvalued. The current stock price of R$28.05 is trading 122.4% above its estimated GF Value™ of R$12.61. GuruFocus considers Interactive Brokers Group to be Significantly Overvalued.

Key valuation signals for BSP:IBKR34:

  • Cyclically Adjusted Book per Share: R$2.39
  • GF Value™: R$12.61 vs. price of R$28.05 (122.4% above fair value)
  • GF Score™: 62/100 with 8 warning signs

No single metric tells the full story. See the BSP:IBKR34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Interactive Brokers Group Business Description

Address One Pickwick Plaza, Greenwich, CT, USA, 06830
Interactive Brokers is a large, automated, retail and institutional brokerage that boasted nearly $780 billion in customer equity at the end of 2025. The company cut its teeth as a market maker, introducing US financial markets to automated and algorithmic training before expanding into brokerage services in 1993. The firm has a wide-ranging client base, with its best-in-class order execution and extremely low margin lending rates catering to a sophisticated audience of hedge funds, proprietary traders, and introducing brokers that account for about 45% of the firm's commissions. With operations spanning more than 170 electronic exchanges, 40 countries, and 29 currencies, Interactive Brokers caters to a global clientele, with more than 80% of active accounts sitting outside the US.
62GF Score

Get the complete analysis for BSP:IBKR34

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

R$28.05
Price
R$12.61
GF Value