Tirathai PCL (BKK:TRT-R) Shiller PE Ratio: (As of Sep. 20, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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BKK:TRT-R Tirathai PCL BKK:TRT-R
58 GF Score
Price ฿3.52
GF Value ฿0.86
! 4 Warning Signs
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What is Tirathai PCL Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Tirathai PCL  (BKK:TRT-R) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


Tirathai PCL Shiller PE Ratio Related Terms


Tirathai PCL Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Tirathai PCL's Shiller PE 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.

Tirathai PCL Shiller PE Ratio Chart

Tirathai PCL Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 24.19 30.56 39.81 20.80 20.47

Tirathai PCL Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE 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 19.89 19.03 20.71 16.07 13.97

BKK:TRT-R vs VRT, BE: Shiller PE Ratio Comparison

For the Electrical Equipment & Parts subindustry, Tirathai PCL's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.


Tirathai PCL Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Tirathai PCL's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Tirathai PCL's Shiller PE Ratio falls into.


BKK:TRT-R
58GF Score
Tirathai PCL BKK:TRT-R
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Tirathai PCL Shiller PE Ratio Calculation

For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Tirathai PCL's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Tirathai PCL's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.4135/333.9520*333.9520
=0.414

Current CPI (Jun. 2026) = 333.9520.

Tirathai PCL Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 -0.050 241.428 -0.069
201612 0.110 241.432 0.152
201703 -0.100 243.801 -0.137
201706 -0.170 244.955 -0.232
201709 -0.240 246.819 -0.325
201712 0.290 246.524 0.393
201803 0.009 249.554 0.012
201806 -0.016 251.989 -0.022
201809 -0.108 252.439 -0.143
201812 0.016 251.233 0.021
201903 -0.062 254.202 -0.081
201906 -0.062 256.143 -0.081
201909 -0.003 256.759 -0.004
201912 0.372 256.974 0.483
202003 -0.197 258.115 -0.255
202006 -0.054 257.797 -0.070
202009 -0.027 260.280 -0.035
202012 0.316 260.474 0.406
202103 -0.114 264.877 -0.143
202106 0.109 271.696 0.134
202109 0.199 274.310 0.242
202112 0.042 278.802 0.050
202203 -0.078 287.504 -0.091
202206 -0.164 296.311 -0.185
202209 -0.083 296.808 -0.094
202212 0.027 296.797 0.030
202303 -0.114 301.836 -0.126
202306 -0.082 305.109 -0.090
202309 0.314 307.789 0.341
202312 0.303 306.746 0.330
202403 0.313 312.332 0.334
202406 0.173 314.175 0.184
202409 0.311 315.301 0.329
202412 -0.071 315.605 -0.075
202503 0.151 319.799 0.158
202506 0.111 322.561 0.115
202509 0.014 324.800 0.014
202512 0.096 324.054 0.099
202603 0.529 330.213 0.535
202606 0.414 333.952 0.414

Add all the adjusted EPS together and divide 10 will get our E10.

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 Tirathai PCL (BKK:TRT-R) Overvalued in 2026?

Based on GuruFocus' analysis, Tirathai PCL stock appears to be overvalued. The current stock price of ฿3.52 is trading 309.3% above its estimated GF Value™ of ฿0.86.

Key valuation signals for BKK:TRT-R:

  • Shiller PE Ratio:
  • GF Value™: ฿0.86 vs. price of ฿3.52 (309.3% above fair value)
  • GF Score™: 58/100 with 4 warning signs

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


Tirathai PCL Business Description

Other Exchanges TRT:Thailand
Address 516/1 Moo 4, Sukhumvit Road, Bangpoo Industrial Estate, Amphoe Mueang, Samut Prakan, THA, 10280
Tirathai PCL is a Thailand-based company mainly involved in the business of manufacturing, repairing, and maintenance services of transformers and the sales of transformer equipment. In addition, it is also involved in general custom metalwork services. It offers Power transformers, Distribution transformers, and Special transformers. The company's operations are located in Thailand and other countries, of which key revenue is derived from Thailand.
58GF Score

Get the complete analysis for BKK:TRT-R

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

฿3.52
Price
฿0.86
GF Value