TSTFX vs. WBREOX

Last updated Jun 4, 2026

TSTFX (Transamerica Stock Index) and WBREOX (CIT: BlackRock Equity Index Fund Class 1) are both Large Cap Blend Equities funds. Over the past year, TSTFX returned -8.95% vs 28.98% for WBREOX. With a 0.98 correlation, they move nearly in lockstep. TSTFX charges 0.30%/yr vs 0.02%/yr for WBREOX.

Performance

TSTFX vs. WBREOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Transamerica Stock Index (TSTFX) and CIT: BlackRock Equity Index Fund Class 1 (WBREOX). 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 TSTFX having a 11.55% return and WBREOX slightly higher at 11.70%.

TSTFX

• 1D: 0.11%
• 1M: 5.79%
• YTD: 11.55%
• 6M: -21.00%
• 1Y: -8.95%
• 3Y*: 9.00%
• 5Y*: 6.41%
• 10Y*: —

WBREOX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.70%
• 6M: 11.74%
• 1Y: 28.98%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TSTFX vs. WBREOX - Yearly Performance Comparison

	2026 (YTD)	2025
TSTFX Transamerica Stock Index	11.55%	-17.88%
WBREOX CIT: BlackRock Equity Index Fund Class 1	11.70%	16.64%

Correlation

The correlation between TSTFX and WBREOX 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 (All Time) Calculated using the full available price history since Jan 6, 2025	0.98

The correlation between TSTFX and WBREOX has been stable across timeframes, ranging from 0.97 to 0.98 - a consistent structural relationship.

Return for Risk

TSTFX vs. WBREOX — Risk / Return Rank

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

TSTFX

TSTFX Risk / Return Rank: 2
TSTFX Sharpe Ratio Rank: 2
TSTFX Sortino Ratio Rank: 2
TSTFX Omega Ratio Rank: 2
TSTFX Calmar Ratio Rank: 2
TSTFX Martin Ratio Rank: 2

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

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.

TSTFX vs. WBREOX - Risk-Adjusted Trends Comparison

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

	TSTFX	WBREOX	Difference
Sharpe ratio: Return per unit of total volatility	-0.29	2.80	-3.09
Sortino ratio: Return per unit of downside risk	-0.12	3.94	-4.05
Omega ratio: Gain probability vs. loss probability	0.96	1.51	-0.55
Calmar ratio: Return relative to maximum drawdown	-0.27	3.85	-4.12
Martin ratio: Return relative to average drawdown	-0.47	17.42	-17.89
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TSTFX vs. WBREOX - Sharpe Ratio Comparison

The current TSTFX Sharpe Ratio is -0.29, which is lower than the WBREOX Sharpe Ratio of 2.80. The chart below compares the historical Sharpe Ratios of TSTFX and WBREOX, 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

	TSTFX	WBREOX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.29	2.80	-3.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.31	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	1.26	-0.73

Drawdowns

TSTFX vs. WBREOX - Drawdown Comparison

The maximum TSTFX drawdown since its inception was -34.74%, which is greater than WBREOX's maximum drawdown of -19.07%. Use the drawdown chart below to compare losses from any high point for TSTFX and WBREOX.

Drawdown Indicators

	TSTFX	WBREOX	Difference
Max Drawdown Largest peak-to-trough decline	-34.74%	-19.07%	-15.67%
Max Drawdown (1Y) Largest decline over 1 year	-34.74%	-8.89%	-25.85%
Max Drawdown (3Y) Largest decline over 3 years	-34.74%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-34.74%	—	—
Current Drawdown Current decline from peak	-21.59%	0.00%	-21.59%
Average Drawdown Average peak-to-trough decline	-6.04%	-2.60%	-3.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	18.90%	1.89%	+17.01%

Volatility

TSTFX vs. WBREOX - Volatility Comparison

Transamerica Stock Index (TSTFX) and CIT: BlackRock Equity Index Fund Class 1 (WBREOX) have volatilities of 2.81% 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

	TSTFX	WBREOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.81%	2.83%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	34.38%	9.40%	+24.98%
Volatility (1Y) Calculated over the trailing 1-year period	32.29%	12.22%	+20.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.51%	18.64%	+2.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.01%	18.64%	+2.37%

TSTFX vs. WBREOX - Expense Ratio Comparison

TSTFX has a 0.30% expense ratio, which is higher than WBREOX's 0.02% expense ratio.

Dividends

TSTFX vs. WBREOX - Dividend Comparison

TSTFX's dividend yield for the trailing twelve months is around 0.87%, while WBREOX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
TSTFX Transamerica Stock Index	0.87%	0.70%	2.61%	4.32%	6.77%	6.57%	4.69%	5.60%	4.69%	2.85%
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%

Frequently Asked Questions

Can I hold both TSTFX and WBREOX in my portfolio?

With a correlation of 0.97, TSTFX and WBREOX 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, TSTFX or WBREOX?

WBREOX has higher volatility (2.83%) compared to TSTFX (2.81%). In terms of maximum drawdown, TSTFX dropped -34.74% vs WBREOX's -19.07%.

Which has better risk-adjusted returns?

WBREOX currently has the higher Sharpe Ratio (2.80 vs -0.29), 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.