DFSI vs. IDEV

Last updated Jun 25, 2026

DFSI (Dimensional International Sustainability Core 1 ETF) and IDEV (iShares Core MSCI International Developed Markets ETF) are both Foreign Large Cap Equities funds. DFSI is actively managed, while IDEV is passively managed. Over the past 3 years, DFSI returned 17.13%/yr vs 17.40%/yr for IDEV. With a 0.97 correlation, they move nearly in lockstep. DFSI charges 0.24%/yr vs 0.05%/yr for IDEV.

Performance

DFSI vs. IDEV - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dimensional International Sustainability Core 1 ETF (DFSI) and iShares Core MSCI International Developed Markets ETF (IDEV). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DFSI achieves a 5.38% return, which is significantly lower than IDEV's 8.16% return.

DFSI

• 1D: -0.17%
• 1M: -0.56%
• YTD: 5.38%
• 6M: 4.73%
• 1Y: 17.87%
• 3Y*: 17.13%
• 5Y*: —
• 10Y*: —

IDEV

• 1D: -0.17%
• 1M: -0.47%
• YTD: 8.16%
• 6M: 7.59%
• 1Y: 21.50%
• 3Y*: 17.40%
• 5Y*: 8.50%
• 10Y*: —

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

DFSI vs. IDEV - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
DFSI Dimensional International Sustainability Core 1 ETF	5.38%	33.62%	4.98%	17.86%	10.47%
IDEV iShares Core MSCI International Developed Markets ETF	8.16%	32.56%	4.54%	17.36%	9.08%

Correlation

The correlation between DFSI and IDEV is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.97
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (All Time) Calculated using the full available price history since Nov 2, 2022	0.97

The correlation between DFSI and IDEV has been stable across timeframes, ranging from 0.97 to 0.97 - a consistent structural relationship.

DFSI vs. IDEV - Sectors Allocation Comparison

Sectors	DFSI	IDEV
Financial Services	24.2%	24.0%
Industrials	21.7%	18.8%
Technology	10.5%	11.1%
Consumer Cyclical	9.8%	7.7%
Healthcare	9.0%	8.5%
Basic Materials	7.4%	8.3%
Consumer Defensive	5.2%	5.8%
Communication Services	5.2%	4.3%
Utilities	3.1%	3.4%
Energy	1.9%	5.4%
Real Estate	1.9%	2.7%

Return for Risk

DFSI vs. IDEV — Risk / Return Rank

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

DFSI

DFSI Risk / Return Rank: 36
DFSI Sharpe Ratio Rank: 36
DFSI Sortino Ratio Rank: 36
DFSI Omega Ratio Rank: 36
DFSI Calmar Ratio Rank: 32
DFSI Martin Ratio Rank: 38

IDEV

IDEV Risk / Return Rank: 45
IDEV Sharpe Ratio Rank: 45
IDEV Sortino Ratio Rank: 45
IDEV Omega Ratio Rank: 44
IDEV Calmar Ratio Rank: 42
IDEV Martin Ratio Rank: 49

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.

DFSI vs. IDEV - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dimensional International Sustainability Core 1 ETF (DFSI) and iShares Core MSCI International Developed Markets ETF (IDEV). 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.

	DFSI	IDEV	Difference
Sharpe ratio: Return per unit of total volatility	1.17	1.44	-0.27
Sortino ratio: Return per unit of downside risk	1.74	2.06	-0.32
Omega ratio: Gain probability vs. loss probability	1.22	1.26	-0.04
Calmar ratio: Return relative to maximum drawdown	1.46	1.93	-0.46
Martin ratio: Return relative to average drawdown	5.45	7.53	-2.08

DFSI vs. IDEV - Sharpe Ratio Comparison

The current DFSI Sharpe Ratio is 1.17, which is comparable to the IDEV Sharpe Ratio of 1.44. The chart below compares the historical Sharpe Ratios of DFSI and IDEV, 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

DFSI vs. IDEV - Drawdown Comparison

The maximum DFSI drawdown since its inception was -12.82%, smaller than the maximum IDEV drawdown of -34.77%. Use the drawdown chart below to compare losses from any high point for DFSI and IDEV.

Drawdown Indicators

	DFSI	IDEV	Difference
Max Drawdown Largest peak-to-trough decline	-12.82%	-34.77%	+21.95%
Max Drawdown (1Y) Largest decline over 1 year	-12.26%	-11.20%	-1.06%
Max Drawdown (3Y) Largest decline over 3 years	-12.82%	-13.41%	+0.59%
Max Drawdown (5Y) Largest decline over 5 years	—	-29.15%	—
Current Drawdown Current decline from peak	-3.30%	-2.15%	-1.15%
Average Drawdown Average peak-to-trough decline	-2.62%	-6.53%	+3.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.29%	2.86%	+0.43%

Volatility

DFSI vs. IDEV - Volatility Comparison

The current volatility for Dimensional International Sustainability Core 1 ETF (DFSI) is 4.76%, while iShares Core MSCI International Developed Markets ETF (IDEV) has a volatility of 5.07%. This indicates that DFSI experiences smaller price fluctuations and is considered to be less risky than IDEV based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DFSI	IDEV	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.76%	5.07%	-0.31%
Volatility (6M) Calculated over the trailing 6-month period	13.22%	12.82%	+0.40%
Volatility (1Y) Calculated over the trailing 1-year period	15.36%	15.06%	+0.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.31%	16.35%	-1.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.31%	17.28%	-1.97%

DFSI vs. IDEV - Expense Ratio Comparison

DFSI has a 0.24% expense ratio, which is higher than IDEV's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

DFSI vs. IDEV - Dividend Comparison

DFSI's dividend yield for the trailing twelve months is around 2.25%, less than IDEV's 3.27% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
DFSI Dimensional International Sustainability Core 1 ETF	2.25%	2.23%	2.39%	2.10%	0.18%	0.00%	0.00%	0.00%	0.00%	0.00%
IDEV iShares Core MSCI International Developed Markets ETF	3.27%	3.40%	3.30%	3.07%	2.69%	3.05%	2.00%	3.18%	3.16%	1.54%

Frequently Asked Questions

Can I hold both DFSI and IDEV in my portfolio?

With a correlation of 0.97, DFSI and IDEV move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, DFSI or IDEV?

IDEV has higher volatility (5.07%) compared to DFSI (4.76%). In terms of maximum drawdown, DFSI dropped -12.82% vs IDEV's -34.77%.

Which ETF is better, DFSI or IDEV?

On 3-year performance, IDEV leads with 17.40% vs 17.13% for DFSI. On fees, IDEV is cheaper at 0.05% per year. On volatility, DFSI has been the lower-risk option at 4.76%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, DFSI or IDEV?

Over the 3-year period, IDEV has performed better with a 17.40% return vs 17.13%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, DFSI or IDEV?

IDEV is cheaper with a 0.05% expense ratio, compared with 0.24% for DFSI.

Which ETF pays a higher dividend yield, DFSI or IDEV?

IDEV has the higher dividend yield at 3.27%, compared with 2.25% for DFSI.

What is the main difference between DFSI and IDEV?

They also come from different issuers: Dimensional and iShares. Their fees differ too: 0.24% for DFSI and 0.05% for IDEV.

Which has better risk-adjusted returns?

IDEV currently has the higher Sharpe Ratio (1.44 vs 1.17), 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.