Main Street CapitalMAIN +0.78%63 PB Ratio is 1.50 as of Jun. 25, 2026, which is 9% below its 10-year median of 1.65. GuruFocus rates MAIN with a GF Score™ of 63/100 and a GF Value™ of $48.95 (Fairly Valued). The stock has 7 warning signs investors should review. Among 1,607 Asset Management companies, Main Street Capital ranks worse than 79.9% on this metric.
Main Street Capital Corp stock PB Ratio (=1.49) is close to 2-year low of 1.48.
The historical rank and industry rank for Main Street Capital's PB Ratio or its related term are showing as below:
MAIN'
s PB Ratio Range Over the Past 10 Years
Min: 0.75 Med: 1.65 Max: 2.07
Current: 1.5
During the past 13 years, Main Street Capital's highest PB Ratio was 2.07. The lowest was 0.75. And the median was 1.65.
MAIN's PB Ratio is ranked worse than 79.9% of 1607
companies
in the Asset Management industry
Industry Median: 0.95
vs MAIN: 1.50
During the past 12 months, Main Street Capital's average Book Value Per Share Growth Rate was 4.50% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 7.40% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 8.20% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 4.30% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Main Street Capital was 34.60% per year. The lowest was -1.70% per year. And the median was 4.50% per year.
Back to Basics: PB Ratio
Main Street Capital (NYSE:MAIN) PB Ratio Explanation
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.
Main Street Capital PB Ratio Related Terms
Main Street Capital PB Ratio Historical Data
* Premium members only.
The historical data trend for Main Street Capital'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 Asset Management subindustry, Main Street Capital'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.
Main Street Capital PB Ratio vs Asset Management Industry
For the Asset Management industry and Financial Services sector, Main Street Capital's PB Ratio distribution charts can be found below:
* The bar in red indicates where Main Street Capital'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.
* 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.
Main Street Capital (MAIN) has a PB Ratio of 1.50 as of Jun. 25, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Main Street Capital and its competitors. This is near median its historical median of 1.65. Over the past decade, Main Street Capital's PB Ratio has ranged from 0.75 to 2.07. According to the industry distribution chart, Main Street Capital ranks #1284 out of 1607 companies in the Asset Management industry, placing it in the top 79.9%.
Is Main Street Capital's PB Ratio too high?
Main Street Capital's current PB Ratio of 1.50 is near median its 10-year median of 1.65. Over the past 10 years, this metric has ranged from a low of 0.75 to a high of 2.07. The Asset Management industry median PB Ratio is 0.95. Main Street Capital's value of 1.50 is 57.9% above this industry median. Based on the distribution chart, Main Street Capital ranks #1284 out of 1607 companies in the Asset Management industry, which is in the bottom quartile relative to peers. Overall, Main Street Capital has a GF Score™ of 63/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Main Street Capital's PB Ratio compare to OTF and HASI?
According to the Asset Management industry distribution chart, Main Street Capital ranks #1284 out of 1607 companies for PB Ratio. This places Main Street Capital in the lower half of its industry. The industry median PB Ratio is 0.95. Main Street Capital's value of 1.50 is 57.9% above this benchmark. Historically, Main Street Capital's own PB Ratio has ranged from 0.75 to 2.07 over the past decade. While the company's 10-year median is 1.65 vs. the industry median of 0.95, Main Street Capital 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 PB Ratio for an Asset Management company?
The median PB Ratio among Asset Management companies is 0.95, based on 1,607 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. Main Street Capital's current PB Ratio of 1.50 is 57.9% 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 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 Main Street Capital and its competitors. For the Asset Management industry, the median PB Ratio is 0.95 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Main Street Capital's current PB Ratio is 1.50, which is near median its own 10-year median of 1.65. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Main Street Capital stock overvalued right now?
Based on GuruFocus' analysis, Main Street Capital (MAIN) is currently considered Fairly Valued. The stock's GF Value™ is $48.95, compared to a current price of $50.19 — trading 2.5% above its estimated fair value. The current PB Ratio is 1.50, which is near median its 10-year median of 1.65 and 57.9% above the Asset Management industry median of 0.95. Main Street Capital's overall GF Score™ is 63/100 with 7 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 Main Street Capital (MAIN), the current PB Ratio is 1.50 as of Jun. 25, 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 Main Street Capital (MAIN) Overvalued in 2026?
Based on GuruFocus' analysis, Main Street Capital stock appears to be overvalued.
The current stock price of $50.19 is trading 2.5% above its estimated GF Value™ of $48.95.
GuruFocus considers Main Street Capital to be Fairly Valued.
Key valuation signals for MAIN:
PB Ratio: 1.50 (near median its 10-year median of 1.65)
GF Value™: $48.95 vs. price of $50.19 (2.5% above fair value)
Industry Position: 57.9% above the Asset Management median (#1284 of 1607)
No single metric tells the full story. See the MAIN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Main Street Capital Corp is a principal investment firm focused on providing customized long-term debt and equity capital solutions to lower middle market ("LMM") companies and debt capital to private ("Private Loan") companies owned by or in the process of being acquired by a private equity fund. The group invests principally in secured debt investments, equity investments, warrants, and other securities of LMM companies, typically based in the U.S. The company operates as a single segment with a principal investment objective to maximize total return by generating current income from debt investments and current income and capital appreciation from equity and equity-related investments.
63GF Score
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