MAIN (Main Street Capital) PEG Ratio: 1.33 (As of Jul. 01, 2026) — 58% Below Median


MAIN Main Street Capital Corp MAIN
68 GF Score
Price $51.88
GF Value $49.05
Valuation Fairly Valued
! 10 Warning Signs
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What is Main Street Capital PEG Ratio?

Main Street Capital MAIN +0.62% 68 PEG Ratio is 1.33 as of Jul. 01, 2026, which is 58% below its 10-year median of 3.18. GuruFocus rates MAIN with a GF Score™ of 68/100 and a GF Value™ of $49.05 (Fairly Valued). The stock has 10 warning signs investors should review. Among 493 Asset Management companies, Main Street Capital ranks better than 57.61% on this metric.

PE Ratio without NRI / 5-Year Book Value Growth Rate*

PEG Ratio is defined as the PE Ratio without NRI divided by the growth ratio. The growth rate we use for banks is the 5-Year Book Value growth rate. As of today, Main Street Capital's PE Ratio without NRI is 10.92. Main Street Capital's 5-Year Book Value growth rate is 8.20%. Therefore, Main Street Capital's PEG Ratio for today is 1.33.

* The 5-Year Book Value Growth Rate is the 5-year average Book Value 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 Main Street Capital's PEG Ratio or its related term are showing as below:

MAIN' s PEG Ratio Range Over the Past 10 Years
Min: 0.97   Med: 3.18   Max: 251.25
Current: 1.33


During the past 13 years, Main Street Capital's highest PEG Ratio was 251.25. The lowest was 0.97. And the median was 3.18.


MAIN's PEG Ratio is ranked better than
57.61% of 493 companies
in the Asset Management industry
Industry Median: 1.7 vs MAIN: 1.33

Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.


Main Street Capital  (NYSE:MAIN) 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.


Main Street Capital PEG Ratio Related Terms


Main Street Capital PEG Ratio Historical Data

* Premium members only.

The historical data trend for Main Street Capital's PEG 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.

Main Street Capital PEG Ratio Chart

Main Street Capital Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
PEG Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 55.00 7.70 1.79 1.21 1.33

Main Street Capital Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
PEG 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 1.06 1.10 1.24 1.33 1.40

MAIN vs OTF, HASI, FHI: PEG Ratio Comparison

For the Asset Management subindustry, Main Street Capital'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.


Main Street Capital PEG Ratio vs Asset Management Industry

For the Asset Management industry and Financial Services sector, Main Street Capital's PEG Ratio distribution charts can be found below:

* The bar in red indicates where Main Street Capital's PEG Ratio falls into.


MAIN
68GF Score
Main Street Capital Corp MAIN
PEG Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Main Street Capital PEG Ratio Calculation

PEG Ratio is defined as the PE Ratio without NRI divided by the growth ratio. The ratio we use is the 5-Year Book Value growth rate.

Main Street Capital's PEG Ratio for today is calculated as

PEG Ratio=PE Ratio without NRI/5-Year Book Value Growth Rate*
=10.922105263158/8.20
=1.33

* 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 Book Value Growth Rate is the 5-year average Book Value 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.

Frequently Asked Questions Learn more about PEG Ratio →
What does a PEG Ratio of 1.33 mean?
Main Street Capital (MAIN) has a PEG Ratio of 1.33 as of Jul. 01, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Main Street Capital and its competitors. This is 58% below median its historical median of 3.18. Over the past decade, Main Street Capital's PEG Ratio has ranged from 0.97 to 251.25. According to the industry distribution chart, Main Street Capital ranks #209 out of 493 companies in the Asset Management industry, placing it in the top 42.4%.
Is Main Street Capital's PEG Ratio too high?
Main Street Capital's current PEG Ratio of 1.33 is 58% below median its 10-year median of 3.18. Over the past 10 years, this metric has ranged from a low of 0.97 to a high of 251.25. The Asset Management industry median PEG Ratio is 1.70. Main Street Capital's value of 1.33 is 21.8% below this industry median. Based on the distribution chart, Main Street Capital ranks #209 out of 493 companies in the Asset Management industry, which is above the industry midpoint. Overall, Main Street Capital has a GF Score™ of 68/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Main Street Capital's PEG Ratio compare to OTF and HASI?
According to the Asset Management industry distribution chart, Main Street Capital ranks #209 out of 493 companies for PEG Ratio. This puts Main Street Capital in the upper half of its industry. The industry median PEG Ratio is 1.70. Main Street Capital's value of 1.33 is 21.8% below this benchmark. Historically, Main Street Capital's own PEG Ratio has ranged from 0.97 to 251.25 over the past decade. While the company's 10-year median is 3.18 vs. the industry median of 1.70, Main Street Capital 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 PEG Ratio for an Asset Management company?
The median PEG Ratio among Asset Management companies is 1.70, based on 493 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. Main Street Capital's current PEG Ratio of 1.33 is 21.8% 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 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 Main Street Capital and its competitors. For the Asset Management industry, the median PEG Ratio is 1.70 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Main Street Capital's current PEG Ratio is 1.33, which is 58% below median its own 10-year median of 3.18. 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 $49.05, compared to a current price of $51.88 — trading 5.8% above its estimated fair value. The current PEG Ratio is 1.33, which is 58% below median its 10-year median of 3.18 and 21.8% below the Asset Management industry median of 1.70. Main Street Capital's overall GF Score™ is 68/100 with 10 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 Main Street Capital (MAIN), the current PEG Ratio is 1.33 as of Jul. 01, 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 $51.88 is trading 5.8% above its estimated GF Value™ of $49.05. GuruFocus considers Main Street Capital to be Fairly Valued.

Key valuation signals for MAIN:

  • PEG Ratio: 1.33 (58% below median its 10-year median of 3.18)
  • GF Value™: $49.05 vs. price of $51.88 (5.8% above fair value)
  • GF Score™: 68/100 with 10 warning signs
  • Industry Position: 21.8% below the Asset Management median (#209 of 493)

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 Business Description

Other Exchanges 0JXQ:UK13M:Germany
Address 1300 Post Oak Boulevard, 8th Floor, Houston, TX, USA, 77056
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.
68GF Score

Get the complete analysis for MAIN

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

$51.88
Price
$49.05
GF Value