DIISX vs. THOIX

Last updated Aug 4, 2026

DIISX (BNY Mellon International Stock Index Fund) and THOIX (Thornburg Global Opportunities Fund) are both Foreign Large Cap Equities funds. Over the past 10 years, DIISX returned 8.38%/yr vs 13.90%/yr for THOIX. Their 0.77 correlation means they have sometimes moved together and sometimes differently. DIISX charges 0.60%/yr vs 0.99%/yr for THOIX.

Performance

DIISX vs. THOIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon International Stock Index Fund (DIISX) and Thornburg Global Opportunities Fund (THOIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DIISX achieves a 11.48% return, which is significantly lower than THOIX's 13.61% return. Over the past 10 years, DIISX has underperformed THOIX with an annualized return of 8.38%, while THOIX has yielded a comparatively higher 13.90% annualized return.

DIISX

• 1D: -0.64%
• 1M: 1.10%
• 6M: 5.56%
• YTD: 11.48%
• 1Y: 24.68%
• 3Y*: 13.57%
• 5Y*: 7.51%
• 10Y*: 8.38%
• ALL TIME*: 4.85%

THOIX

• 1D: 2.44%
• 1M: 3.95%
• 6M: 6.21%
• YTD: 13.61%
• 1Y: 33.45%
• 3Y*: 22.82%
• 5Y*: 14.03%
• 10Y*: 13.90%
• ALL TIME*: 10.54%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
DIISX BNY Mellon International Stock Index Fund	$0.00	$0.00	$0.00
THOIX Thornburg Global Opportunities Fund	$0.00	$0.00	$0.00

DIISX vs. THOIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DIISX BNY Mellon International Stock Index Fund	11.48%	30.36%	0.36%	13.93%	-14.57%	10.85%	7.52%	21.48%	-13.92%	24.46%
THOIX Thornburg Global Opportunities Fund	13.61%	41.04%	13.08%	16.26%	-10.12%	14.72%	22.50%	28.74%	-20.72%	22.03%

Correlation

The correlation between DIISX and THOIX is 0.62, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.62
Correlation (3Y) Balances recent behavior with more history.	0.72
Correlation (5Y) Shows whether the relationship held over a longer period.	0.77
Correlation (10Y) Provides a long-term view across more market conditions.	0.77
Correlation (All Time) Calculated using the full available price history since Jan 3, 2007	0.77

The correlation between DIISX and THOIX shifts across timeframes, from 0.62 (1 year) to 0.77 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

DIISX vs. THOIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

DIISX

DIISX Risk / Return Rank: 55
DIISX Sharpe Ratio Rank: 56
DIISX Sortino Ratio Rank: 59
DIISX Omega Ratio Rank: 54
DIISX Calmar Ratio Rank: 54
DIISX Martin Ratio Rank: 52

THOIX

THOIX Risk / Return Rank: 92
THOIX Sharpe Ratio Rank: 95
THOIX Sortino Ratio Rank: 92
THOIX Omega Ratio Rank: 91
THOIX Calmar Ratio Rank: 92
THOIX Martin Ratio Rank: 90

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

DIISX vs. THOIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon International Stock Index Fund (DIISX) and Thornburg Global Opportunities Fund (THOIX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	DIISX	THOIX	Difference
Sharpe ratio: Return per unit of total volatility	1.56	2.63	-1.08
Sortino ratio: Return per unit of downside risk	2.29	3.54	-1.25
Omega ratio: Gain probability vs. loss probability	1.28	1.50	-0.21
Calmar ratio: Return relative to maximum drawdown	2.11	3.70	-1.59
Martin ratio: Return relative to average drawdown	7.64	12.83	-5.19

DIISX vs. THOIX - Sharpe Ratio Comparison

The current DIISX Sharpe Ratio is 1.56, which is lower than the THOIX Sharpe Ratio of 2.63. The chart below compares the historical Sharpe Ratios of DIISX and THOIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

DIISX vs. THOIX - Drawdown Comparison

The maximum DIISX drawdown since its inception was -60.03%, smaller than the maximum THOIX drawdown of -64.58%. Use the drawdown chart below to compare losses from any high point for DIISX and THOIX.

Drawdown Indicators

	DIISX	THOIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.03%	-64.58%	+4.55%
Max Drawdown (1Y) Largest decline over 1 year	-11.40%	-8.62%	-2.78%
Max Drawdown (3Y) Largest decline over 3 years	-16.26%	-13.71%	-2.55%
Max Drawdown (5Y) Largest decline over 5 years	-29.46%	-30.18%	+0.72%
Max Drawdown (10Y) Largest decline over 10 years	-34.08%	-35.22%	+1.14%
Current Drawdown Current decline from peak	-0.64%	-0.97%	+0.33%
Average Drawdown Average peak-to-trough decline	-14.74%	-11.40%	-3.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.14%	2.48%	+0.66%

Volatility

DIISX vs. THOIX - Volatility Comparison

BNY Mellon International Stock Index Fund (DIISX) has a higher volatility of 4.73% compared to Thornburg Global Opportunities Fund (THOIX) at 4.09%. This indicates that DIISX's price experiences larger fluctuations and is considered to be riskier than THOIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DIISX	THOIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.73%	4.09%	+0.64%
Volatility (6M) Calculated over the trailing 6-month period	13.17%	9.66%	+3.51%
Volatility (1Y) Calculated over the trailing 1-year period	15.45%	12.10%	+3.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.16%	16.51%	-0.35%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.34%	17.35%	-1.01%

DIISX vs. THOIX - Expense Ratio Comparison

DIISX has a 0.60% expense ratio, which is lower than THOIX's 0.99% expense ratio.

Dividends

DIISX vs. THOIX - Dividend Comparison

DIISX's dividend yield for the trailing twelve months is around 4.11%, less than THOIX's 5.65% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DIISX BNY Mellon International Stock Index Fund	4.11%	4.58%	0.27%	0.29%	2.23%	3.42%	1.62%	2.80%	2.66%	2.17%	2.89%	2.12%
THOIX Thornburg Global Opportunities Fund	5.65%	6.42%	5.70%	5.70%	4.00%	14.39%	6.70%	1.47%	2.65%	0.67%	0.82%	0.59%

Frequently Asked Questions

Can I hold both DIISX and THOIX in my portfolio?

DIISX and THOIX have a correlation of 0.62, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DIISX or THOIX?

DIISX has higher volatility (4.73%) compared to THOIX (4.09%). In terms of maximum drawdown, DIISX dropped -60.03% vs THOIX's -64.58%.

Which has better risk-adjusted returns?

THOIX currently has the higher Sharpe Ratio (2.63 vs 1.56), 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.