Longwell Co (ROCO:6290) Cyclically Adjusted PB Ratio: (As of Aug. 18, 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.

ROCO:6290 Longwell Co ROCO:6290
70 GF Score
Price NT$209.50
GF Value NT$112.56
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Longwell Co Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Longwell Co  (ROCO:6290) 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.


Longwell Co Cyclically Adjusted PB Ratio Related Terms


Longwell Co Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Longwell Co'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.

Longwell Co Cyclically Adjusted PB Ratio Chart

Longwell Co 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 1.77 1.66 1.94 2.10 4.93

Longwell Co 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 2.67 3.36 4.93 5.12 0.00

ROCO:6290 vs VRT, BE: Cyclically Adjusted PB Ratio Comparison

For the Electrical Equipment & Parts subindustry, Longwell Co'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.


Longwell Co Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Longwell Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


ROCO:6290
70GF Score
Longwell Co ROCO:6290
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Longwell Co 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.

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

For example, Longwell Co'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)
=46.587/333.9520*333.9520
=46.587

Current CPI (Jun. 2026) = 333.9520.

Longwell Co Quarterly Data

Book Value per Share CPI Adj_Book
201609 26.599 241.428 36.793
201612 27.822 241.432 38.484
201703 26.705 243.801 36.580
201706 24.794 244.955 33.802
201709 25.318 246.819 34.256
201712 25.823 246.524 34.981
201803 25.913 249.554 34.677
201806 25.106 251.989 33.272
201809 24.934 252.439 32.985
201812 25.383 251.233 33.740
201903 26.737 254.202 35.125
201906 26.945 256.143 35.130
201909 28.420 256.759 36.964
201912 29.495 256.974 38.330
202003 29.757 258.115 38.500
202006 27.302 257.797 35.367
202009 28.705 260.280 36.830
202012 30.156 260.474 38.663
202103 31.386 264.877 39.571
202106 32.085 271.696 39.437
202109 28.760 274.310 35.013
202112 29.195 278.802 34.970
202203 31.072 287.504 36.092
202206 30.209 296.311 34.047
202209 32.514 296.808 36.583
202212 33.774 296.797 38.002
202303 34.966 301.836 38.686
202306 33.186 305.109 36.323
202309 36.401 307.789 39.495
202312 36.478 306.746 39.713
202403 38.882 312.332 41.573
202406 37.942 314.175 40.330
202409 39.186 315.301 41.504
202412 41.200 315.605 43.595
202503 39.278 319.799 41.016
202506 38.053 322.561 39.397
202509 42.213 324.800 43.402
202512 47.480 324.054 48.930
202603 44.545 330.213 45.049
202606 46.587 333.952 46.587

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 Longwell Co (ROCO:6290) Overvalued in 2026?

Based on GuruFocus' analysis, Longwell Co stock appears to be overvalued. The current stock price of NT$209.50 is trading 86.1% above its estimated GF Value™ of NT$112.56. GuruFocus considers Longwell Co to be Significantly Overvalued.

Key valuation signals for ROCO:6290:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: NT$112.56 vs. price of NT$209.50 (86.1% above fair value)
  • GF Score™: 70/100 with 2 warning signs

No single metric tells the full story. See the ROCO:6290 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Longwell Co Business Description

Address Chang An E. Road, Section 1, No. 36, 10th Floor, Taipei, TWN
Longwell Co is a cable and electronic components producer based in Taiwan. Its product offerings include high-amperage cables, busbar and busbar connectors, optical cables, power cords, cable assemblies, jumper cords, EV charging kits, data cables, Type-C and USB cables, and other similar products and components. Geographically, the Group generates maximum revenue from China, and the rest from America, Taiwan, Japan, and other markets.
70GF Score

Get the complete analysis for ROCO:6290

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

NT$209.50
Price
NT$112.56
GF Value