TCBI vs. IBOC

Last updated Jun 3, 2026

TCBI (Texas Capital Bancshares, Inc.) and IBOC (International Bancshares Corporation) are both stocks. Both operate in the Banks - Regional industry within the Financial Services sector. Over the past 10 years, TCBI returned 7.25%/yr vs 12.92%/yr for IBOC. A 0.67 correlation means they provide meaningful diversification when combined.

Performance

TCBI vs. IBOC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Texas Capital Bancshares, Inc. (TCBI) and International Bancshares Corporation (IBOC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TCBI achieves a 10.38% return, which is significantly higher than IBOC's 9.46% return. Over the past 10 years, TCBI has underperformed IBOC with an annualized return of 7.25%, while IBOC has yielded a comparatively higher 12.92% annualized return.

TCBI

• 1D: 1.75%
• 1M: -1.42%
• YTD: 10.38%
• 6M: 9.98%
• 1Y: 39.84%
• 3Y*: 24.76%
• 5Y*: 7.62%
• 10Y*: 7.25%

IBOC

• 1D: 1.51%
• 1M: 0.46%
• YTD: 9.46%
• 6M: 9.94%
• 1Y: 17.08%
• 3Y*: 18.58%
• 5Y*: 11.86%
• 10Y*: 12.92%

*Multi-year figures are annualized to reflect compound growth (CAGR)

TCBI vs. IBOC - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TCBI Texas Capital Bancshares, Inc.	10.38%	15.78%	21.00%	7.16%	0.10%	1.26%	4.81%	11.12%	-42.53%	13.39%
IBOC International Bancshares Corporation	9.46%	7.41%	19.11%	21.97%	10.94%	16.51%	-9.51%	28.67%	-11.78%	-0.96%

Correlation

The correlation between TCBI and IBOC is 0.74, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.77
Correlation (5Y) Calculated over the trailing 5-year period	0.76
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since Aug 15, 2003	0.67

The correlation between TCBI and IBOC shifts across timeframes, from 0.67 (all time) to 0.77 (3 years), reflecting how their relationship changes across market environments.

Fundamentals

EPS TCBI : $10.36 IBOC : $8.95
PE Ratio TCBI : 9.63 IBOC : 8.05
PEG Ratio TCBI : 0.11 IBOC : 0.56
PS Ratio TCBI : 1.77 IBOC : 4.17
Total Revenue (TTM) TCBI : $1.95B IBOC : $804.91M
Gross Profit (TTM) TCBI : $948.30M IBOC : $632.71M
EBITDA (TTM) TCBI : $410.33M IBOC : $416.98M

Return for Risk

TCBI vs. IBOC — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

TCBI

TCBI Risk / Return Rank: 77
TCBI Sharpe Ratio Rank: 79
TCBI Sortino Ratio Rank: 72
TCBI Omega Ratio Rank: 73
TCBI Calmar Ratio Rank: 80
TCBI Martin Ratio Rank: 80

IBOC

IBOC Risk / Return Rank: 62
IBOC Sharpe Ratio Rank: 64
IBOC Sortino Ratio Rank: 58
IBOC Omega Ratio Rank: 56
IBOC Calmar Ratio Rank: 66
IBOC Martin Ratio Rank: 66

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

TCBI vs. IBOC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Texas Capital Bancshares, Inc. (TCBI) and International Bancshares Corporation (IBOC). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	TCBI	IBOC	Difference
Sharpe ratio Return per unit of total volatility	1.39	0.72	+0.67
Sortino ratio Return per unit of downside risk	1.87	1.17	+0.70
Omega ratio Gain probability vs. loss probability	1.26	1.14	+0.11
Calmar ratio Return relative to maximum drawdown	2.77	1.36	+1.42
Martin ratio Return relative to average drawdown	6.62	3.19	+3.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TCBI vs. IBOC - Sharpe Ratio Comparison

The current TCBI Sharpe Ratio is 1.39, which is higher than the IBOC Sharpe Ratio of 0.72. The chart below compares the historical Sharpe Ratios of TCBI and IBOC, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	TCBI	IBOC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.39	0.72	+0.67
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.22	0.42	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.18	0.38	-0.20
Sharpe Ratio (All Time) Calculated using the full available price history	0.24	0.34	-0.10

Drawdowns

TCBI vs. IBOC - Drawdown Comparison

The maximum TCBI drawdown since its inception was -81.15%, roughly equal to the maximum IBOC drawdown of -77.43%. Use the drawdown chart below to compare losses from any high point for TCBI and IBOC.

Drawdown Indicators

	TCBI	IBOC	Difference
Max Drawdown Largest peak-to-trough decline	-81.15%	-77.43%	-3.72%
Max Drawdown (1Y) Largest decline over 1 year	-14.21%	-12.74%	-1.47%
Max Drawdown (3Y) Largest decline over 3 years	-31.71%	-24.09%	-7.62%
Max Drawdown (5Y) Largest decline over 5 years	-38.35%	-24.09%	-14.26%
Max Drawdown (10Y) Largest decline over 10 years	-81.15%	-63.37%	-17.78%
Current Drawdown Current decline from peak	-5.70%	-2.49%	-3.21%
Average Drawdown Average peak-to-trough decline	-24.01%	-16.76%	-7.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.95%	5.43%	+0.52%

Volatility

TCBI vs. IBOC - Volatility Comparison

Texas Capital Bancshares, Inc. (TCBI) has a higher volatility of 6.45% compared to International Bancshares Corporation (IBOC) at 4.91%. This indicates that TCBI's price experiences larger fluctuations and is considered to be riskier than IBOC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TCBI	IBOC	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.45%	4.91%	+1.54%
Volatility (6M) Calculated over the trailing 6-month period	19.80%	16.51%	+3.29%
Volatility (1Y) Calculated over the trailing 1-year period	28.83%	23.78%	+5.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	35.55%	28.43%	+7.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	41.57%	34.21%	+7.36%

Dividends

TCBI vs. IBOC - Dividend Comparison

TCBI's dividend yield for the trailing twelve months is around 0.20%, less than IBOC's 1.99% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IBOC International Bancshares Corporation	1.99%	2.11%	2.09%	2.32%	2.62%	2.71%	2.94%	2.44%	2.18%	1.66%	1.47%	2.26%
TCBI Texas Capital Bancshares, Inc.	0.20%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both TCBI and IBOC in my portfolio?

TCBI and IBOC have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TCBI or IBOC?

TCBI has higher volatility (6.45%) compared to IBOC (4.91%). In terms of maximum drawdown, TCBI dropped -81.15% vs IBOC's -77.43%.

Which has better risk-adjusted returns?

TCBI currently has the higher Sharpe Ratio (1.39 vs 0.72), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.