Old Second BancorpOSBC +1.63%68 PEG Ratio is 1.06 as of Jun. 27, 2026, which is 22% above its 10-year median of 0.87. GuruFocus rates OSBC with a GF Score™ of 68/100 and a GF Value™ of $18.66 (Modestly Overvalued). The stock has 7 warning signs investors should review. Among 1,229 Banks companies, Old Second Bancorp ranks better than 65.99% on this metric.
PE Ratio without NRI / 5-Year Book Value Growth Rate*
* 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 Old Second Bancorp's PEG Ratio or its related term are showing as below:
OSBC'
s PEG Ratio Range Over the Past 10 Years
Min: 0.4 Med: 0.87 Max: 1.69
Current: 1.06
During the past 13 years, Old Second Bancorp's highest PEG Ratio was 1.69. The lowest was 0.40. And the median was 0.87.
OSBC's PEG Ratio is ranked better than 65.99% of 1229
companies
in the Banks industry
Industry Median: 1.52
vs OSBC: 1.06
Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.
Old Second Bancorp (NAS:OSBC) 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.
Old Second Bancorp PEG Ratio Related Terms
Old Second Bancorp PEG Ratio Historical Data
* Premium members only.
The historical data trend for Old Second Bancorp'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.
For the Banks - Regional subindustry, Old Second Bancorp'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.
Old Second Bancorp PEG Ratio vs Banks Industry
For the Banks industry and Financial Services sector, Old Second Bancorp's PEG Ratio distribution charts can be found below:
* The bar in red indicates where Old Second Bancorp'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 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.
Old Second Bancorp (OSBC) has a PEG Ratio of 1.06 as of Jun. 27, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Old Second Bancorp and its competitors. This is 22% above median its historical median of 0.87. Over the past decade, Old Second Bancorp's PEG Ratio has ranged from 0.40 to 1.69. According to the industry distribution chart, Old Second Bancorp ranks #418 out of 1229 companies in the Banks industry, placing it in the top 34%.
Is Old Second Bancorp's PEG Ratio too high?
Old Second Bancorp's current PEG Ratio of 1.06 is 22% above median its 10-year median of 0.87. Over the past 10 years, this metric has ranged from a low of 0.40 to a high of 1.69. The Banks industry median PEG Ratio is 1.52. Old Second Bancorp's value of 1.06 is 30.3% below this industry median. Based on the distribution chart, Old Second Bancorp ranks #418 out of 1229 companies in the Banks industry, which is above the industry midpoint. Overall, Old Second Bancorp has a GF Score™ of 68/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Old Second Bancorp's PEG Ratio compare to UVSP and CCB?
According to the Banks industry distribution chart, Old Second Bancorp ranks #418 out of 1229 companies for PEG Ratio. This puts Old Second Bancorp in the upper half of its industry. The industry median PEG Ratio is 1.52. Old Second Bancorp's value of 1.06 is 30.3% below this benchmark. Historically, Old Second Bancorp's own PEG Ratio has ranged from 0.40 to 1.69 over the past decade. While the company's 10-year median is 0.87 vs. the industry median of 1.52, Old Second Bancorp 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 a Banks company?
The median PEG Ratio among Banks companies is 1.52, based on 1,229 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. Old Second Bancorp's current PEG Ratio of 1.06 is 30.3% 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 Old Second Bancorp and its competitors. For the Banks industry, the median PEG Ratio is 1.52 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Old Second Bancorp's current PEG Ratio is 1.06, which is 22% above median its own 10-year median of 0.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Old Second Bancorp stock overvalued right now?
Based on GuruFocus' analysis, Old Second Bancorp (OSBC) is currently considered Modestly Overvalued. The stock's GF Value™ is $18.66, compared to a current price of $23.36 — trading 25.2% above its estimated fair value. The current PEG Ratio is 1.06, which is 22% above median its 10-year median of 0.87 and 30.3% below the Banks industry median of 1.52. Old Second Bancorp's overall GF Score™ is 68/100 with 7 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 Old Second Bancorp (OSBC), the current PEG Ratio is 1.06 as of Jun. 27, 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 Old Second Bancorp (OSBC) Overvalued in 2026?
Based on GuruFocus' analysis, Old Second Bancorp stock appears to be overvalued.
The current stock price of $23.36 is trading 25.2% above its estimated GF Value™ of $18.66.
GuruFocus considers Old Second Bancorp to be Modestly Overvalued.
Key valuation signals for OSBC:
PEG Ratio: 1.06 (22% above median its 10-year median of 0.87)
GF Value™: $18.66 vs. price of $23.36 (25.2% above fair value)
Industry Position: 30.3% below the Banks median (#418 of 1229)
No single metric tells the full story. See the OSBC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Old Second Bancorp Inc is a bank holding company. It provides consumer and commercial banking products such as demand, money market, savings, time deposit, and individual retirement as well as commercial, industrial, consumer, and real estate lending, including installment loans, student loans, agricultural loans, lines of credit and overdraft checking, safe deposit operations, trust services, wealth management services, and additional services tailored to the needs of individual customers, corporates, small-medium enterprises. The company has one operating segment, which is community banking. The company's revenue consists of interest, commission, payments, and other income.
68GF Score
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