International Bancshares is trading with a PE to growth ratio of 5.33, based on Jun 22, 2026 data. Dividing the 11.19 PE ratio by the 2.1% earnings growth rate yields this valuation metric. Relative to the 6.23 average from the past four quarters, the PEG ratio has declined by 14%.
Historically, International Bancshares has a PEG ratio averaging 3.84 across the past nine years. At 5.33, today's PEG ratio sits 39% more than its historical average. The nine years high occurred in the Mar 2025 quarter at 48, reflecting maximum valuation relative to growth. The minimum was hit in the Jun 2023 quarter at 0.09, indicating optimal value relative to growth during that period.
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | 12.53 | 10.02 | 0.8% |
| 2024 | N/A | 9.6 | -0.8% |
| 2023 | 0.21 | 8.19 | 38.4% |
| 2022 | 0.49 | 9.55 | 19.5% |
| 2021 | 0.2 | 10.57 | 52.5% |
| 2020 | N/A | 14.24 | -16% |
| 2019 | N/A | 13.76 | -4.3% |
| 2018 | 0.28 | 10.52 | 37.4% |
| 2017 | 0.97 | 16.68 | 17.2% |
| 2016 | N/A | 20.1 | -1.5% |
| 2015 | N/A | 12.48 | -10% |
| 2014 | 0.53 | 11.59 | 21.8% |
| 2013 | 0.4 | 14.02 | 35.3% |
| 2012 | N/A | 13.01 | -17.8% |
| 2011 | N/A | 10.85 | -1.7% |
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Mar 2026 | 4.78 | 10.03 | 2.1% |
| Dec 2025 | 12.53 | 10.02 | 0.8% |
| Sep 2025 | 2.03 | 10.17 | 5% |
| Jun 2025 | 5.58 | 10.05 | 1.8% |
| Mar 2025 | 48 | 9.6 | 0.2% |
| Dec 2024 | N/A | 9.6 | -0.8% |
| Sep 2024 | N/A | 9.28 | -2.6% |
| Jun 2024 | 2.67 | 8.8 | 3.3% |
| Mar 2024 | 0.49 | 8.56 | 17.4% |
| Dec 2023 | 0.21 | 8.19 | 38.4% |
| Sep 2023 | 0.1 | 6.56 | 65.7% |
| Jun 2023 | 0.09 | 7.03 | 79.2% |
| Mar 2023 | 0.2 | 7.66 | 38.4% |
| Dec 2022 | 0.49 | 9.55 | 19.5% |
| Sep 2022 | 3.8 | 10.65 | 2.8% |
Measured against past performance, IBOC's PEG ratio sits above its 5 and 10-year averages, yet it is lower than the 3-year average.
With a PEG of 5.33, IBOC stands above the Financial Services sector, the industry and its peers average.
IBOC has a PEG ratio above that of peer stocks CFR and BOKF. At 5.33, International Bancshares's PEG ratio stands higher than the peer group average of 0.86.
| Stock name | PEG ratio | Market cap |
|---|---|---|
| TCBI Texas Capital Bancshares Inc | 0.04 | $4.42B |
| BOKF Bok Financial Corp | 1.01 | $8.21B |
| CFR Cullen/Frost Bankers Inc | 1.15 | $9.42B |
| FFIN First Financial Bankshares Inc | 1.28 | $4.8B |
| PB Prosperity Bancshares Inc | 2.57 | $7.29B |
| IBOC International Bancshares Corp | 5.39 | $4.72B |
| SBSI Southside Bancshares Inc | N/A | $1.03B |
Based on Jun 22, 2026 data, IBOC has a PEG ratio of 5.33.
IBOC's 3-year PEG ratio average is 7.65.
IBOC's 5-year PEG ratio average is 4.83.
IBOC's PEG ratio peaked at 48 during the Mar 2025 quarter - the highest in nine years.
Compared to the 9-year average, IBOC's PEG ratio is 39% higher.
Slow earnings growth combined with a high valuation pushes IBOC's PEG ratio to 5.33.
To calculate the PEG ratio, take the company's PE ratio and divide by its earnings per share growth (YoY TTM). As of Jun 22, 2026, International Bancshares has a P/E ratio of 11.19. Earnings grew at 2.1% over the TTM period ending Mar 2026. Applying the formula, this gives a price to earnings growth ratio of 5.33. PEG RATIO(5.33) = PE RATIO(11.19) / EPS GROWTH(2.1%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.