OSBC vs MOFG vs FBIZ vs IROQ

For growth investors, Old Second Bancorp, Inc.

(OSBC) is the stronger pick with 18. 1% revenue growth year-over-year, versus -23. 1% for MidWestOne Financial Group, Inc. (MOFG). First Business Financial Services, Inc. (FBIZ) offers the better valuation at 9. 4x trailing P/E (9. 1x forward), making it the more compelling value choice. Analysts rate Old Second Bancorp, Inc. (OSBC) a "Buy" — based on 6 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, First Business Financial Services, Inc.

(FBIZ) is the cheapest at 9. 4x versus IF Bancorp, Inc. at 19. 4x. On forward P/E, First Business Financial Services, Inc. is actually cheaper at 9. 1x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: First Business Financial Services, Inc. wins at 0. 36x versus Old Second Bancorp, Inc. 's 0. 81x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, First Business Financial Services, Inc.

(FBIZ) delivered a total return of +130. 9%, compared to +25. 6% for IF Bancorp, Inc. (IROQ). Over 10 years, the gap is even starker: OSBC returned +219. 4% versus IROQ's +59. 5%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), IF Bancorp, Inc.

(IROQ) is the lower-risk stock at 0. 04β versus MidWestOne Financial Group, Inc. 's 1. 29β — meaning MOFG is approximately 3578% more volatile than IROQ relative to the S&P 500. On balance sheet safety, MidWestOne Financial Group, Inc. (MOFG) carries a lower debt/equity ratio of 21% versus 89% for IF Bancorp, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Old Second Bancorp, Inc.

(OSBC) is pulling ahead at 18. 1% versus -23. 1% for MidWestOne Financial Group, Inc. (MOFG). On earnings-per-share growth, the picture is similar: IF Bancorp, Inc. grew EPS 140. 4% year-over-year, compared to -366. 2% for MidWestOne Financial Group, Inc.. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Old Second Bancorp, Inc.

(OSBC) is the more profitable company, earning 20. 2% net margin versus -29. 3% for MidWestOne Financial Group, Inc. — meaning it keeps 20. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: OSBC leads at 27. 9% versus -40. 8% for MOFG. At the gross margin level — before operating expenses — OSBC leads at 78. 1%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, First Business Financial Services, Inc. (FBIZ) is the more undervalued stock at a PEG of 0. 36x versus Old Second Bancorp, Inc. 's 0. 81x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, First Business Financial Services, Inc. (FBIZ) trades at 9. 1x forward P/E versus 13. 8x for MidWestOne Financial Group, Inc. — 4. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for FBIZ: 18. 1% to $67. 00.

All stocks in this comparison pay dividends.

First Business Financial Services, Inc. (FBIZ) offers the highest yield at 2. 1%, versus 1. 1% for Old Second Bancorp, Inc. (OSBC).

For long-horizon retirement investors, IF Bancorp, Inc.

(IROQ) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 04), 1. 5% yield). Both have compounded well over 10 years (IROQ: +59. 5%, MOFG: +109. 8%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: OSBC is a small-cap high-growth stock; MOFG is a small-cap quality compounder stock; FBIZ is a small-cap deep-value stock; IROQ is a small-cap quality compounder stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.