Portobello SpAMIL:POR -1.69%44 PB Ratio is 0.05 as of Jun. 24, 2026, which is 98% below its 10-year median of 2.62. GuruFocus rates MIL:POR with a GF Score™ of 44/100 and a GF Value™ of €1.47 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 931 Media - Diversified companies, Portobello SpA ranks better than 99.36% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-24), Portobello SpA's share price is €1.16. Portobello SpA's Book Value per Share for the quarter that ended in Jun. 2025 was €22.55. Hence, Portobello SpA's PB Ratio of today is 0.05.
Good Sign:
Portobello SpA stock PB Ratio (=0.05) is close to 10-year low of 0.05.
The historical rank and industry rank for Portobello SpA's PB Ratio or its related term are showing as below:
MIL:POR'
s PB Ratio Range Over the Past 10 Years
Min: 0.05 Med: 2.62 Max: 34.73
Current: 0.05
During the past 9 years, Portobello SpA's highest PB Ratio was 34.73. The lowest was 0.05. And the median was 2.62.
MIL:POR's PB Ratio is ranked better than 99.36% of 931
companies
in the Media - Diversified industry
Industry Median: 1.28
vs MIL:POR: 0.05
During the past 12 months, Portobello SpA's average Book Value Per Share Growth Rate was -2472.80% per year.
During the past 9 years, the highest 3-Year average Book Value Per Share Growth Rate of Portobello SpA was 237.30% per year. The lowest was -15.60% per year. And the median was 64.10% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Portobello SpA PB Ratio Related Terms
Portobello SpA PB Ratio Historical Data
* Premium members only.
The historical data trend for Portobello SpA's 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.
For the Advertising Agencies subindustry, Portobello SpA's PB Ratio, along with its competitors' market caps and 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.
Portobello SpA PB Ratio vs Media - Diversified Industry
For the Media - Diversified industry and Communication Services sector, Portobello SpA's PB Ratio distribution charts can be found below:
* The bar in red indicates where Portobello SpA's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
Portobello SpA's PB Ratio for today is calculated as follows:
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Portobello SpA (MIL:POR) has a PB Ratio of 0.05 as of Jun. 24, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Portobello SpA and its competitors. This is 98% below median its historical median of 2.62. Over the past decade, Portobello SpA's PB Ratio has ranged from 0.05 to 34.73. According to the industry distribution chart, Portobello SpA ranks #6 out of 931 companies in the Media - Diversified industry, placing it in the top 0.59999999999999%.
Is Portobello SpA's PB Ratio too high?
Portobello SpA's current PB Ratio of 0.05 is 98% below median its 10-year median of 2.62. Over the past 10 years, this metric has ranged from a low of 0.05 to a high of 34.73. The Media - Diversified industry median PB Ratio is 1.28. Portobello SpA's value of 0.05 is 96.1% below this industry median. Based on the distribution chart, Portobello SpA ranks #6 out of 931 companies in the Media - Diversified industry, which is in the top quartile — a strong position relative to peers. Overall, Portobello SpA has a GF Score™ of 44/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Portobello SpA's PB Ratio compare to APP and OMC?
According to the Media - Diversified industry distribution chart, Portobello SpA ranks #6 out of 931 companies for PB Ratio. This places Portobello SpA in the top 1% of its industry — outperforming the majority of peers. The industry median PB Ratio is 1.28. Portobello SpA's value of 0.05 is 96.1% below this benchmark. Historically, Portobello SpA's own PB Ratio has ranged from 0.05 to 34.73 over the past decade. While the company's 10-year median is 2.62 vs. the industry median of 1.28, Portobello SpA has consistently been below 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 PB Ratio for a Media - Diversified company?
The median PB Ratio among Media - Diversified companies is 1.28, based on 931 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Portobello SpA's current PB Ratio of 0.05 is 96.1% below 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Portobello SpA and its competitors. For the Media - Diversified industry, the median PB Ratio is 1.28 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Portobello SpA's current PB Ratio is 0.05, which is 98% below median its own 10-year median of 2.62. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Portobello SpA stock overvalued right now?
Based on GuruFocus' analysis, Portobello SpA (MIL:POR) is currently considered Modestly Undervalued. The stock's GF Value™ is €1.47, compared to a current price of €1.16 — trading 21.1% below its estimated fair value. The current PB Ratio is 0.05, which is 98% below median its 10-year median of 2.62 and 96.1% below the Media - Diversified industry median of 1.28. Portobello SpA's overall GF Score™ is 44/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Portobello SpA (MIL:POR), the current PB Ratio is 0.05 as of Jun. 24, 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 Portobello SpA (MIL:POR) Overvalued in 2026?
Based on GuruFocus' analysis, Portobello SpA stock appears to be undervalued.
The current stock price of €1.16 is trading 21.1% below its estimated GF Value™ of €1.47.
GuruFocus considers Portobello SpA to be Modestly Undervalued.
Key valuation signals for MIL:POR:
PB Ratio: 0.05 (98% below median its 10-year median of 2.62)
GF Value™: €1.47 vs. price of €1.16 (21.1% below fair value)
Industry Position: 96.1% below the Media - Diversified median (#6 of 931)
No single metric tells the full story. See the MIL:POR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Portobello SpA operates in media bartering. The company uses advertising space to purchase products from the brands that it resells in stores at the lowest prices on the market. retail store. The company offers electronic goods, housewares, home textile products, fashion products, and many more.
44GF Score
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