Thermo Fisher ScientificBSP:TMOS34 -0.20%74 PEG Ratio is 8.42 as of Jun. 28, 2026, which is 365% above its 10-year median of 1.81. GuruFocus rates BSP:TMOS34 with a GF Score™ of 74/100 and a GF Value™ of R$62.34 (Modestly Undervalued). The stock has 5 warning signs investors should review. Among 36 Medical Diagnostics & Research companies, Thermo Fisher Scientific ranks worse than 88.89% on this metric.
* The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
The historical rank and industry rank for Thermo Fisher Scientific's PEG Ratio or its related term are showing as below:
BSP:TMOS34'
s PEG Ratio Range Over the Past 10 Years
Min: 0.8 Med: 1.81 Max: 15.16
Current: 8.86
During the past 13 years, Thermo Fisher Scientific's highest PEG Ratio was 15.16. The lowest was 0.80. And the median was 1.81.
BSP:TMOS34's PEG Ratio is ranked worse than 88.89% of 36
companies
in the Medical Diagnostics & Research industry
Industry Median: 2.27
vs BSP:TMOS34: 8.86
Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.
Thermo Fisher Scientific (BSP:TMOS34) PEG Ratio Explanation
To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the P/E ratio divided by the growth ratio. He thinks a company with a P/E ratio equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a P/E of 20, instead of a company growing 10% a year with a P/E of 10.
Thermo Fisher Scientific PEG Ratio Related Terms
Thermo Fisher Scientific PEG Ratio Historical Data
* 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.
For the Diagnostics & Research subindustry, Thermo Fisher Scientific's PEG Ratio, along with its competitors' market caps and PEG 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.
Thermo Fisher Scientific PEG Ratio vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Thermo Fisher Scientific's PEG Ratio distribution charts can be found below:
* The bar in red indicates where Thermo Fisher Scientific's PEG Ratio falls into.
* 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.
* Note: The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
Thermo Fisher Scientific (BSP:TMOS34) has a PEG Ratio of 8.42 as of Jun. 28, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Thermo Fisher Scientific and its competitors. This is 365% above median its historical median of 1.81. Over the past decade, Thermo Fisher Scientific's PEG Ratio has ranged from 0.80 to 15.16. According to the industry distribution chart, Thermo Fisher Scientific ranks #32 out of 36 companies in the Medical Diagnostics & Research industry, placing it in the top 88.9%.
Is Thermo Fisher Scientific's PEG Ratio too high?
Thermo Fisher Scientific's current PEG Ratio of 8.42 is 365% above median its 10-year median of 1.81. Over the past 10 years, this metric has ranged from a low of 0.80 to a high of 15.16. The Medical Diagnostics & Research industry median PEG Ratio is 2.27. Thermo Fisher Scientific's value of 8.42 is 270.9% above this industry median. Based on the distribution chart, Thermo Fisher Scientific ranks #32 out of 36 companies in the Medical Diagnostics & Research industry, which is in the bottom quartile relative to peers. Overall, Thermo Fisher Scientific has a GF Score™ of 74/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Thermo Fisher Scientific's PEG Ratio compare to DHR and IDXX?
According to the Medical Diagnostics & Research industry distribution chart, Thermo Fisher Scientific ranks #32 out of 36 companies for PEG Ratio. This places Thermo Fisher Scientific in the lower half of its industry. The industry median PEG Ratio is 2.27. Thermo Fisher Scientific's value of 8.42 is 270.9% above this benchmark. Historically, Thermo Fisher Scientific's own PEG Ratio has ranged from 0.80 to 15.16 over the past decade. While the company's 10-year median is 1.81 vs. the industry median of 2.27, Thermo Fisher Scientific has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PEG Ratio for a Medical Diagnostics & Research company?
The median PEG Ratio among Medical Diagnostics & Research companies is 2.27, based on 36 companies in the industry. Companies in the top quartile (top 25%) have a PEG Ratio significantly above this median, while those in the bottom quartile fall well below. However, PEG Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Thermo Fisher Scientific's current PEG Ratio of 8.42 is 270.9% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PEG Ratio mean?
A high PEG Ratio can signal that a stock is expensive relative to its fundamentals. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Thermo Fisher Scientific and its competitors. For the Medical Diagnostics & Research industry, the median PEG Ratio is 2.27 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Thermo Fisher Scientific's current PEG Ratio is 8.42, which is 365% above median its own 10-year median of 1.81. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Thermo Fisher Scientific stock overvalued right now?
Based on GuruFocus' analysis, Thermo Fisher Scientific (BSP:TMOS34) is currently considered Modestly Undervalued. The stock's GF Value™ is R$62.34, compared to a current price of R$54.84 — trading 12% below its estimated fair value. The current PEG Ratio is 8.42, which is 365% above median its 10-year median of 1.81 and 270.9% above the Medical Diagnostics & Research industry median of 2.27. Thermo Fisher Scientific's overall GF Score™ is 74/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PEG Ratio calculated?
PEG Ratio is calculated from a company's financial statements. For Thermo Fisher Scientific (BSP:TMOS34), the current PEG Ratio is 8.42 as of Jun. 28, 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 Thermo Fisher Scientific (BSP:TMOS34) Overvalued in 2026?
Based on GuruFocus' analysis, Thermo Fisher Scientific stock appears to be undervalued.
The current stock price of R$54.84 is trading 12% below its estimated GF Value™ of R$62.34.
GuruFocus considers Thermo Fisher Scientific to be Modestly Undervalued.
Key valuation signals for BSP:TMOS34:
PEG Ratio: 8.42 (365% above median its 10-year median of 1.81)
GF Value™: R$62.34 vs. price of R$54.84 (12% below fair value)
Industry Position: 270.9% above the Medical Diagnostics & Research median (#32 of 36)
No single metric tells the full story. See the BSP:TMOS34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Thermo Fisher Scientific sells scientific instruments and laboratory equipment, diagnostics consumables, and life science reagents. The firm operates through four segments as of year-end 2025 (revenue figures include some cross-segment revenue): analytical technologies (17% of sales); specialty diagnostic products (11%); life science solutions (23%); and lab products and services, which includes CRO services (the remainder).
74GF Score
Get the complete analysis for BSP:TMOS34
PEG Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BSP:TMOS34 has been successfully added to your 
