DTSGX vs. SPY

Last updated Aug 1, 2026

DTSGX (Wilshire Small Company Growth Portfolio) and SPY (State Street SPDR S&P 500 ETF) are both funds - DTSGX is a Small Cap Growth Equities fund managed by Wilshire Mutual Funds, while SPY is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, DTSGX returned 8.43%/yr vs 15.07%/yr for SPY. Their 0.80 correlation means they have sometimes moved together and sometimes differently. DTSGX charges 1.35%/yr vs 0.09%/yr for SPY.

Performance

DTSGX vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Wilshire Small Company Growth Portfolio (DTSGX) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DTSGX achieves a 16.07% return, which is significantly higher than SPY's 10.13% return. Over the past 10 years, DTSGX has underperformed SPY with an annualized return of 8.43%, while SPY has yielded a comparatively higher 15.07% annualized return.

DTSGX

• 1D: 2.66%
• 1M: -4.46%
• 6M: 13.17%
• YTD: 16.07%
• 1Y: 28.05%
• 3Y*: 9.32%
• 5Y*: 1.25%
• 10Y*: 8.43%
• ALL TIME*: 8.12%

SPY

• 1D: 0.72%
• 1M: 0.30%
• 6M: 8.53%
• YTD: 10.13%
• 1Y: 21.49%
• 3Y*: 19.32%
• 5Y*: 12.76%
• 10Y*: 15.07%
• ALL TIME*: 10.79%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
DTSGX Wilshire Small Company Growth Portfolio	$0.00	$0.00	$0.00
SPY State Street SPDR S&P 500 ETF	$37.27B	$35.99B	$39.23B

DTSGX vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DTSGX Wilshire Small Company Growth Portfolio	16.07%	7.91%	4.24%	17.91%	-31.39%	12.56%	28.93%	27.91%	-7.98%	13.87%
SPY State Street SPDR S&P 500 ETF	10.13%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between DTSGX and SPY is 0.80, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.80
Correlation (3Y) Balances recent behavior with more history.	0.79
Correlation (5Y) Shows whether the relationship held over a longer period.	0.83
Correlation (10Y) Provides a long-term view across more market conditions.	0.82
Correlation (All Time) Calculated using the full available price history since Jan 29, 1993	0.80

The correlation between DTSGX and SPY has been stable across timeframes, ranging from 0.79 to 0.83 - a consistent structural relationship.

Return for Risk

DTSGX vs. SPY — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

DTSGX

DTSGX Risk / Return Rank: 41
DTSGX Sharpe Ratio Rank: 36
DTSGX Sortino Ratio Rank: 39
DTSGX Omega Ratio Rank: 33
DTSGX Calmar Ratio Rank: 52
DTSGX Martin Ratio Rank: 46

SPY

SPY Risk / Return Rank: 67
SPY Sharpe Ratio Rank: 67
SPY Sortino Ratio Rank: 64
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 64
SPY Martin Ratio Rank: 76

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

DTSGX vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Wilshire Small Company Growth Portfolio (DTSGX) and State Street SPDR S&P 500 ETF (SPY). 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.

	DTSGX	SPY	Difference
Sharpe ratio: Return per unit of total volatility	1.15	1.52	-0.37
Sortino ratio: Return per unit of downside risk	1.72	2.11	-0.39
Omega ratio: Gain probability vs. loss probability	1.20	1.27	-0.07
Calmar ratio: Return relative to maximum drawdown	1.93	2.20	-0.28
Martin ratio: Return relative to average drawdown	6.56	9.40	-2.84

DTSGX vs. SPY - Sharpe Ratio Comparison

The current DTSGX Sharpe Ratio is 1.15, which is comparable to the SPY Sharpe Ratio of 1.52. The chart below compares the historical Sharpe Ratios of DTSGX and SPY, 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

DTSGX vs. SPY - Drawdown Comparison

The maximum DTSGX drawdown since its inception was -56.83%, roughly equal to the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for DTSGX and SPY.

Drawdown Indicators

	DTSGX	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-56.83%	-55.19%	-1.64%
Max Drawdown (1Y) Largest decline over 1 year	-13.28%	-8.88%	-4.40%
Max Drawdown (3Y) Largest decline over 3 years	-27.55%	-18.76%	-8.79%
Max Drawdown (5Y) Largest decline over 5 years	-40.62%	-24.50%	-16.12%
Max Drawdown (10Y) Largest decline over 10 years	-40.62%	-33.72%	-6.90%
Current Drawdown Current decline from peak	-7.13%	-1.40%	-5.73%
Average Drawdown Average peak-to-trough decline	-13.29%	-9.01%	-4.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.90%	2.08%	+1.82%

Volatility

DTSGX vs. SPY - Volatility Comparison

Wilshire Small Company Growth Portfolio (DTSGX) has a higher volatility of 6.38% compared to State Street SPDR S&P 500 ETF (SPY) at 3.58%. This indicates that DTSGX's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DTSGX	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.38%	3.58%	+2.80%
Volatility (6M) Calculated over the trailing 6-month period	17.76%	10.14%	+7.62%
Volatility (1Y) Calculated over the trailing 1-year period	22.30%	12.89%	+9.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.01%	17.18%	+6.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.42%	17.95%	+5.47%

DTSGX vs. SPY - Expense Ratio Comparison

DTSGX has a 1.35% expense ratio, which is higher than SPY's 0.09% expense ratio.

Dividends

DTSGX vs. SPY - Dividend Comparison

DTSGX has not paid dividends to shareholders, while SPY's dividend yield for the trailing twelve months is around 1.01%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DTSGX Wilshire Small Company Growth Portfolio	0.00%	0.00%	0.00%	0.00%	25.61%	38.28%	12.13%	2.46%	6.52%	10.69%	11.80%	5.94%
SPY State Street SPDR S&P 500 ETF	1.01%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both DTSGX and SPY in my portfolio?

DTSGX and SPY have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DTSGX or SPY?

DTSGX has higher volatility (6.38%) compared to SPY (3.58%). In terms of maximum drawdown, DTSGX dropped -56.83% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (1.52 vs 1.15), 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.