WBREOX vs. BKTSX

Last updated Jun 24, 2026

WBREOX (CIT: BlackRock Equity Index Fund Class 1) and BKTSX (iShares Total U.S. Stock Market Index Fund Class K) are both Large Cap Blend Equities funds - WBREOX tracks the S&P 500 while BKTSX tracks the Russell 3000 Index. Both are passively managed. Over the past year, WBREOX returned 25.51% vs 25.53% for BKTSX. A 0.79 correlation means they provide meaningful diversification when combined. Both charge a 0.02% expense ratio.

Performance

WBREOX vs. BKTSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in CIT: BlackRock Equity Index Fund Class 1 (WBREOX) and iShares Total U.S. Stock Market Index Fund Class K (BKTSX). 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 WBREOX having a 9.78% return and BKTSX slightly higher at 10.08%.

WBREOX

• 1D: -0.36%
• 1M: 0.10%
• YTD: 9.78%
• 6M: 8.79%
• 1Y: 25.51%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BKTSX

• 1D: -0.32%
• 1M: 0.47%
• YTD: 10.08%
• 6M: 8.96%
• 1Y: 25.53%
• 3Y*: 21.13%
• 5Y*: 12.46%
• 10Y*: 15.31%

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

WBREOX vs. BKTSX - Yearly Performance Comparison

	2026 (YTD)	2025
WBREOX CIT: BlackRock Equity Index Fund Class 1	9.78%	16.64%
BKTSX iShares Total U.S. Stock Market Index Fund Class K	10.08%	17.32%

Correlation

The correlation between WBREOX and BKTSX is 0.86, 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	0.86
Correlation (All Time) Calculated using the full available price history since Jan 3, 2025	0.79

The correlation between WBREOX and BKTSX has been stable across timeframes, ranging from 0.79 to 0.86 - a consistent structural relationship.

Return for Risk

WBREOX vs. BKTSX — Risk / Return Rank

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

WBREOX

WBREOX Risk / Return Rank: 76
WBREOX Sharpe Ratio Rank: 76
WBREOX Sortino Ratio Rank: 73
WBREOX Omega Ratio Rank: 68
WBREOX Calmar Ratio Rank: 79
WBREOX Martin Ratio Rank: 85

BKTSX

BKTSX Risk / Return Rank: 63
BKTSX Sharpe Ratio Rank: 60
BKTSX Sortino Ratio Rank: 55
BKTSX Omega Ratio Rank: 55
BKTSX Calmar Ratio Rank: 68
BKTSX Martin Ratio Rank: 77

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. BKTSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for CIT: BlackRock Equity Index Fund Class 1 (WBREOX) and iShares Total U.S. Stock Market Index Fund Class K (BKTSX). 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.

	WBREOX	BKTSX	Difference
Sharpe ratio: Return per unit of total volatility	2.34	2.11	+0.23
Sortino ratio: Return per unit of downside risk	3.27	2.87	+0.40
Omega ratio: Gain probability vs. loss probability	1.42	1.38	+0.04
Calmar ratio: Return relative to maximum drawdown	3.38	3.03	+0.35
Martin ratio: Return relative to average drawdown	14.88	13.51	+1.37

WBREOX vs. BKTSX - Sharpe Ratio Comparison

The current WBREOX Sharpe Ratio is 2.34, which is comparable to the BKTSX Sharpe Ratio of 2.11. The chart below compares the historical Sharpe Ratios of WBREOX and BKTSX, 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

WBREOX vs. BKTSX - Drawdown Comparison

The maximum WBREOX drawdown since its inception was -19.07%, smaller than the maximum BKTSX drawdown of -34.97%. Use the drawdown chart below to compare losses from any high point for WBREOX and BKTSX.

Drawdown Indicators

	WBREOX	BKTSX	Difference
Max Drawdown Largest peak-to-trough decline	-19.07%	-34.97%	+15.90%
Max Drawdown (1Y) Largest decline over 1 year	-8.89%	-8.87%	-0.02%
Max Drawdown (3Y) Largest decline over 3 years	—	-19.29%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-24.98%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-34.97%	—
Current Drawdown Current decline from peak	-1.72%	-1.47%	-0.25%
Average Drawdown Average peak-to-trough decline	-2.57%	-4.51%	+1.94%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.92%	1.98%	-0.06%

Volatility

WBREOX vs. BKTSX - Volatility Comparison

CIT: BlackRock Equity Index Fund Class 1 (WBREOX) and iShares Total U.S. Stock Market Index Fund Class K (BKTSX) have volatilities of 4.61% and 4.70%, 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	BKTSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.61%	4.70%	-0.09%
Volatility (6M) Calculated over the trailing 6-month period	9.90%	9.97%	-0.07%
Volatility (1Y) Calculated over the trailing 1-year period	12.89%	12.76%	+0.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.65%	17.45%	+1.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.65%	18.46%	+0.19%

WBREOX vs. BKTSX - Expense Ratio Comparison

Both WBREOX and BKTSX 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. BKTSX - Dividend Comparison

WBREOX has not paid dividends to shareholders, while BKTSX's dividend yield for the trailing twelve months is around 1.06%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
BKTSX iShares Total U.S. Stock Market Index Fund Class K	1.06%	1.14%	1.27%	1.46%	1.64%	1.58%	1.51%	2.15%	2.49%	2.17%	1.54%
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%

Frequently Asked Questions

Can I hold both WBREOX and BKTSX in my portfolio?

WBREOX and BKTSX have a correlation of 0.86, 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 BKTSX?

BKTSX has higher volatility (4.70%) compared to WBREOX (4.61%). In terms of maximum drawdown, WBREOX dropped -19.07% vs BKTSX's -34.97%.

Which has better risk-adjusted returns?

WBREOX currently has the higher Sharpe Ratio (2.34 vs 2.11), 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.