DCOR vs. VIIIX

Last updated Jun 4, 2026

DCOR (Dimensional US Core Equity 1 ETF) and VIIIX (Vanguard Institutional Index Fund Institutional Plus Shares) are both funds - DCOR is a Large Cap Blend Equities fund actively managed by Dimensional, while VIIIX is a S&P 500 fund tracking the S&P 500 Index. DCOR is actively managed, while VIIIX is passively managed. Over the past year, DCOR returned 28.02% vs 28.99% for VIIIX. With a 0.96 correlation, they move nearly in lockstep. DCOR charges 0.14%/yr vs 0.02%/yr for VIIIX.

Performance

DCOR vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dimensional US Core Equity 1 ETF (DCOR) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with DCOR having a 11.56% return and VIIIX slightly higher at 11.70%.

DCOR

• 1D: -0.64%
• 1M: 4.40%
• YTD: 11.56%
• 6M: 11.77%
• 1Y: 28.02%
• 3Y*: —
• 5Y*: —
• 10Y*: —

VIIIX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.70%
• 6M: 11.74%
• 1Y: 28.99%
• 3Y*: 23.17%
• 5Y*: 14.42%
• 10Y*: 15.74%

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

DCOR vs. VIIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
DCOR Dimensional US Core Equity 1 ETF	11.56%	15.96%	21.19%	7.83%
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	11.70%	17.87%	26.29%	7.28%

Correlation

The correlation between DCOR and VIIIX is 0.96 - 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	0.96
Correlation (All Time) Calculated using the full available price history since Sep 14, 2023	0.96

The correlation between DCOR and VIIIX has been stable across timeframes, ranging from 0.96 to 0.96 - a consistent structural relationship.

DCOR vs. VIIIX - Sectors Allocation Comparison

Sectors	DCOR	VIIIX
Technology	29.0%	35.5%
Financial Services	14.6%	11.6%
Industrials	12.1%	8.0%
Consumer Cyclical	10.6%	10.0%
Communication Services	9.1%	11.1%
Healthcare	8.7%	8.5%
Energy	5.6%	3.5%
Consumer Defensive	5.0%	4.9%
Basic Materials	2.8%	1.8%
Utilities	2.4%	2.8%
Real Estate	0.2%	1.9%

Return for Risk

DCOR vs. VIIIX — Risk / Return Rank

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

DCOR

DCOR Risk / Return Rank: 72
DCOR Sharpe Ratio Rank: 72
DCOR Sortino Ratio Rank: 71
DCOR Omega Ratio Rank: 70
DCOR Calmar Ratio Rank: 68
DCOR Martin Ratio Rank: 78

VIIIX

VIIIX Risk / Return Rank: 73
VIIIX Sharpe Ratio Rank: 76
VIIIX Sortino Ratio Rank: 67
VIIIX Omega Ratio Rank: 67
VIIIX Calmar Ratio Rank: 74
VIIIX Martin Ratio Rank: 83

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.

DCOR vs. VIIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dimensional US Core Equity 1 ETF (DCOR) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). 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.

	DCOR	VIIIX	Difference
Sharpe ratio: Return per unit of total volatility	2.38	2.52	-0.14
Sortino ratio: Return per unit of downside risk	3.29	3.42	-0.13
Omega ratio: Gain probability vs. loss probability	1.43	1.46	-0.03
Calmar ratio: Return relative to maximum drawdown	3.41	3.36	+0.05
Martin ratio: Return relative to average drawdown	15.19	15.69	-0.51
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DCOR vs. VIIIX - Sharpe Ratio Comparison

The current DCOR Sharpe Ratio is 2.38, which is comparable to the VIIIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of DCOR and VIIIX, 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

	DCOR	VIIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.38	2.52	-0.14
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.86	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.41	0.50	+0.92

Drawdowns

DCOR vs. VIIIX - Drawdown Comparison

The maximum DCOR drawdown since its inception was -19.10%, smaller than the maximum VIIIX drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for DCOR and VIIIX.

Drawdown Indicators

	DCOR	VIIIX	Difference
Max Drawdown Largest peak-to-trough decline	-19.10%	-55.18%	+36.08%
Max Drawdown (1Y) Largest decline over 1 year	-8.26%	-8.90%	+0.64%
Max Drawdown (3Y) Largest decline over 3 years	—	-18.75%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-24.50%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.79%	—
Current Drawdown Current decline from peak	-0.64%	0.00%	-0.64%
Average Drawdown Average peak-to-trough decline	-2.20%	-10.02%	+7.82%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.85%	1.90%	-0.05%

Volatility

DCOR vs. VIIIX - Volatility Comparison

Dimensional US Core Equity 1 ETF (DCOR) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) have volatilities of 2.90% and 2.83%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DCOR	VIIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.90%	2.83%	+0.07%
Volatility (6M) Calculated over the trailing 6-month period	8.79%	8.97%	-0.18%
Volatility (1Y) Calculated over the trailing 1-year period	11.84%	11.86%	-0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.15%	16.89%	-1.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.15%	18.06%	-2.91%

DCOR vs. VIIIX - Expense Ratio Comparison

DCOR has a 0.14% expense ratio, which is higher than VIIIX's 0.02% 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

DCOR vs. VIIIX - Dividend Comparison

DCOR's dividend yield for the trailing twelve months is around 0.91%, less than VIIIX's 2.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DCOR Dimensional US Core Equity 1 ETF	0.91%	0.97%	0.98%	0.40%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	2.41%	2.11%	3.66%	2.66%	3.39%	4.79%	3.07%	2.86%	2.45%	1.84%	2.38%	2.47%

Frequently Asked Questions

Can I hold both DCOR and VIIIX in my portfolio?

With a correlation of 0.96, DCOR and VIIIX 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, DCOR or VIIIX?

DCOR has higher volatility (2.90%) compared to VIIIX (2.83%). In terms of maximum drawdown, DCOR dropped -19.10% vs VIIIX's -55.18%.

Which has better risk-adjusted returns?

VIIIX currently has the higher Sharpe Ratio (2.52 vs 2.38), 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.