WBREOX vs. VIIIX

Last updated Jun 4, 2026

WBREOX (CIT: BlackRock Equity Index Fund Class 1) and VIIIX (Vanguard Institutional Index Fund Institutional Plus Shares) are both Large Cap Blend Equities funds. Over the past year, WBREOX returned 28.98% vs 28.99% for VIIIX. A 0.79 correlation means they provide meaningful diversification when combined. Both charge a 0.02% expense ratio.

Performance

WBREOX vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in CIT: BlackRock Equity Index Fund Class 1 (WBREOX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

As of year-to-date, both investments have demonstrated similar returns, with WBREOX at 11.70% and VIIIX at 11.70%.

WBREOX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.70%
• 6M: 11.74%
• 1Y: 28.98%
• 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)

WBREOX vs. VIIIX - Yearly Performance Comparison

	2026 (YTD)	2025
WBREOX CIT: BlackRock Equity Index Fund Class 1	11.70%	16.64%
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	11.70%	16.64%

Correlation

The correlation between WBREOX and VIIIX is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.85
Correlation (All Time) Calculated using the full available price history since Jan 6, 2025	0.79

The correlation between WBREOX and VIIIX has been stable across timeframes, ranging from 0.79 to 0.85 - a consistent structural relationship.

Return for Risk

WBREOX vs. VIIIX — Risk / Return Rank

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

WBREOX

WBREOX Risk / Return Rank: 84
WBREOX Sharpe Ratio Rank: 86
WBREOX Sortino Ratio Rank: 83
WBREOX Omega Ratio Rank: 78
WBREOX Calmar Ratio Rank: 83
WBREOX Martin Ratio Rank: 88

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.

WBREOX vs. VIIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for CIT: BlackRock Equity Index Fund Class 1 (WBREOX) 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.

	WBREOX	VIIIX	Difference
Sharpe ratio Return per unit of total volatility	2.80	2.52	+0.28
Sortino ratio Return per unit of downside risk	3.94	3.42	+0.51
Omega ratio Gain probability vs. loss probability	1.51	1.46	+0.05
Calmar ratio Return relative to maximum drawdown	3.85	3.36	+0.49
Martin ratio Return relative to average drawdown	17.42	15.69	+1.73
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WBREOX vs. VIIIX - Sharpe Ratio Comparison

The current WBREOX Sharpe Ratio is 2.80, which is comparable to the VIIIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of WBREOX 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

	WBREOX	VIIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.80	2.52	+0.28
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	1.26	0.50	+0.76

Drawdowns

WBREOX vs. VIIIX - Drawdown Comparison

The maximum WBREOX drawdown since its inception was -19.07%, smaller than the maximum VIIIX drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for WBREOX and VIIIX.

Drawdown Indicators

	WBREOX	VIIIX	Difference
Max Drawdown Largest peak-to-trough decline	-19.07%	-55.18%	+36.11%
Max Drawdown (1Y) Largest decline over 1 year	-8.89%	-8.90%	+0.01%
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	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-2.60%	-10.02%	+7.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.89%	1.90%	-0.01%

Volatility

WBREOX vs. VIIIX - Volatility Comparison

CIT: BlackRock Equity Index Fund Class 1 (WBREOX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) have volatilities of 2.83% 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

	WBREOX	VIIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.83%	2.83%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	9.40%	8.97%	+0.43%
Volatility (1Y) Calculated over the trailing 1-year period	12.22%	11.86%	+0.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.64%	16.89%	+1.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.64%	18.06%	+0.58%

WBREOX vs. VIIIX - Expense Ratio Comparison

Both WBREOX and VIIIX have an expense ratio of 0.02%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

WBREOX vs. VIIIX - Dividend Comparison

WBREOX has not paid dividends to shareholders, while VIIIX's dividend yield for the trailing twelve months is around 2.41%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
WBREOX CIT: BlackRock Equity Index Fund Class 1	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both WBREOX and VIIIX in my portfolio?

WBREOX and VIIIX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WBREOX or VIIIX?

VIIIX has higher volatility (2.83%) compared to WBREOX (2.83%). In terms of maximum drawdown, WBREOX dropped -19.07% vs VIIIX's -55.18%.

Which has better risk-adjusted returns?

WBREOX currently has the higher Sharpe Ratio (2.80 vs 2.52), 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.