Interactive Brokers Group (FRA:KY6) Cyclically Adjusted PB Ratio: (As of Aug. 08, 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.

FRA:KY6 Interactive Brokers Group Inc FRA:KY6
92 GF Score
Price €74.29
GF Value €34.63
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Interactive Brokers Group Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Interactive Brokers Group  (FRA:KY6) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Interactive Brokers Group Cyclically Adjusted PB Ratio Related Terms


Interactive Brokers Group Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Interactive Brokers Group's Cyclically Adjusted PB 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.

Interactive Brokers Group Cyclically Adjusted PB Ratio Chart

Interactive Brokers Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 4.43 3.61 3.74 7.14 9.15

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 PB 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 8.34 10.03 9.15 9.12 0.00

FRA:KY6 vs LPLA, TW, CRCL: Cyclically Adjusted PB Ratio 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.


FRA:KY6
92GF Score
Interactive Brokers Group Inc FRA:KY6
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Interactive Brokers Group Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Interactive Brokers Group's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Interactive Brokers Group'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)
=11.374/333.9520*333.9520
=11.374

Current CPI (Jun. 2026) = 333.9520.

Interactive Brokers Group Quarterly Data

Book Value per Share CPI Adj_Book
201609 3.214 241.428 4.446
201612 3.395 241.432 4.696
201703 3.428 243.801 4.696
201706 3.322 244.955 4.529
201709 3.216 246.819 4.351
201712 3.222 246.524 4.365
201803 3.211 249.554 4.297
201806 3.442 251.989 4.562
201809 3.546 252.439 4.691
201812 3.751 251.233 4.986
201903 3.903 254.202 5.127
201906 3.979 256.143 5.188
201909 4.156 256.759 5.405
201912 4.257 256.974 5.532
202003 4.380 258.115 5.667
202006 4.374 257.797 5.666
202009 4.320 260.280 5.543
202012 4.417 260.474 5.663
202103 4.708 264.877 5.936
202106 4.847 271.696 5.958
202109 5.046 274.310 6.143
202112 5.396 278.802 6.463
202203 5.675 287.504 6.592
202206 5.996 296.311 6.758
202209 6.571 296.808 7.393
202212 6.533 296.797 7.351
202303 6.804 301.836 7.528
202306 6.985 305.109 7.645
202309 7.422 307.789 8.053
202312 7.676 306.746 8.357
202403 8.015 312.332 8.570
202406 8.407 314.175 8.936
202409 8.576 315.301 9.083
202412 9.383 315.605 9.928
202503 9.556 319.799 9.979
202506 9.478 322.561 9.813
202509 9.769 324.800 10.044
202512 10.283 324.054 10.597
202603 10.845 330.213 10.968
202606 11.374 333.952 11.374

Add all the adjusted book value per share together and divide the count will get our 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.

Is Interactive Brokers Group (FRA:KY6) Overvalued in 2026?

Based on GuruFocus' analysis, Interactive Brokers Group stock appears to be overvalued. The current stock price of €74.29 is trading 114.5% above its estimated GF Value™ of €34.63. GuruFocus considers Interactive Brokers Group to be Significantly Overvalued.

Key valuation signals for FRA:KY6:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €34.63 vs. price of €74.29 (114.5% above fair value)
  • GF Score™: 92/100 with 4 warning signs

No single metric tells the full story. See the FRA:KY6 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.
92GF Score

Get the complete analysis for FRA:KY6

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

€74.29
Price
€34.63
GF Value