IUSG vs. SPYG

Last updated Jun 24, 2026

IUSG (iShares Core S&P U.S. Growth ETF) and SPYG (State Street SPDR Portfolio S&P 500 Growth ETF) are both exchange-traded funds - IUSG is a Large Cap Growth Equities fund tracking the S&P 900 Growth Index, while SPYG is a S&P 500 fund tracking the S&P 500 Growth Index. Both are passively managed. Over the past 10 years, IUSG returned 17.77%/yr vs 18.05%/yr for SPYG. Their correlation of 0.92 suggests significant overlap in exposure. Both charge a 0.04% expense ratio.

Performance

IUSG vs. SPYG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Core S&P U.S. Growth ETF (IUSG) and State Street SPDR Portfolio S&P 500 Growth ETF (SPYG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IUSG achieves a 9.19% return, which is significantly higher than SPYG's 8.70% return. Both investments have delivered pretty close results over the past 10 years, with IUSG having a 17.77% annualized return and SPYG not far ahead at 18.05%.

IUSG

• 1D: -2.31%
• 1M: -1.86%
• YTD: 9.19%
• 6M: 7.87%
• 1Y: 26.96%
• 3Y*: 25.00%
• 5Y*: 13.77%
• 10Y*: 17.77%

SPYG

• 1D: -2.40%
• 1M: -2.07%
• YTD: 8.70%
• 6M: 7.46%
• 1Y: 26.87%
• 3Y*: 25.48%
• 5Y*: 14.11%
• 10Y*: 18.05%

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

IUSG vs. SPYG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IUSG iShares Core S&P U.S. Growth ETF	9.19%	21.23%	34.70%	29.28%	-28.81%	31.26%	32.65%	30.62%	-0.79%	27.02%
SPYG State Street SPDR Portfolio S&P 500 Growth ETF	8.70%	22.09%	35.99%	30.02%	-29.41%	32.01%	33.46%	30.84%	-0.12%	27.24%

Correlation

The correlation between IUSG and SPYG is 0.99 - 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	0.99
Correlation (3Y) Calculated over the trailing 3-year period	1.00
Correlation (5Y) Calculated over the trailing 5-year period	1.00
Correlation (10Y) Calculated over the trailing 10-year period	0.99
Correlation (All Time) Calculated using the full available price history since Oct 2, 2000	0.92

The correlation between IUSG and SPYG has been stable across timeframes, ranging from 0.92 to 1.00 - a consistent structural relationship.

IUSG vs. SPYG - Sectors Allocation Comparison

Sectors	IUSG	SPYG
Technology	50.8%	52.1%
Communication Services	15.2%	15.9%
Financial Services	8.7%	9.0%
Consumer Cyclical	8.4%	8.5%
Industrials	6.6%	5.4%
Healthcare	6.4%	5.9%
Consumer Defensive	1.2%	1.0%
Utilities	1.1%	1.2%
Real Estate	0.8%	0.6%
Basic Materials	0.5%	0.3%
Energy	0.3%	0.1%

Return for Risk

IUSG vs. SPYG — Risk / Return Rank

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

IUSG

IUSG Risk / Return Rank: 47
IUSG Sharpe Ratio Rank: 48
IUSG Sortino Ratio Rank: 45
IUSG Omega Ratio Rank: 45
IUSG Calmar Ratio Rank: 43
IUSG Martin Ratio Rank: 51

SPYG

SPYG Risk / Return Rank: 45
SPYG Sharpe Ratio Rank: 47
SPYG Sortino Ratio Rank: 44
SPYG Omega Ratio Rank: 44
SPYG Calmar Ratio Rank: 41
SPYG Martin Ratio Rank: 48

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.

IUSG vs. SPYG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Core S&P U.S. Growth ETF (IUSG) and State Street SPDR Portfolio S&P 500 Growth ETF (SPYG). 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.

	IUSG	SPYG	Difference
Sharpe ratio: Return per unit of total volatility	1.60	1.57	+0.04
Sortino ratio: Return per unit of downside risk	2.20	2.17	+0.03
Omega ratio: Gain probability vs. loss probability	1.28	1.28	0.00
Calmar ratio: Return relative to maximum drawdown	2.07	1.96	+0.11
Martin ratio: Return relative to average drawdown	8.45	7.79	+0.66

IUSG vs. SPYG - Sharpe Ratio Comparison

The current IUSG Sharpe Ratio is 1.60, which is comparable to the SPYG Sharpe Ratio of 1.57. The chart below compares the historical Sharpe Ratios of IUSG and SPYG, 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

IUSG vs. SPYG - Drawdown Comparison

The maximum IUSG drawdown since its inception was -63.41%, smaller than the maximum SPYG drawdown of -67.63%. Use the drawdown chart below to compare losses from any high point for IUSG and SPYG.

Drawdown Indicators

	IUSG	SPYG	Difference
Max Drawdown Largest peak-to-trough decline	-63.41%	-67.63%	+4.22%
Max Drawdown (1Y) Largest decline over 1 year	-13.07%	-13.76%	+0.69%
Max Drawdown (3Y) Largest decline over 3 years	-22.28%	-22.14%	-0.14%
Max Drawdown (5Y) Largest decline over 5 years	-32.21%	-32.67%	+0.46%
Max Drawdown (10Y) Largest decline over 10 years	-32.35%	-32.67%	+0.32%
Current Drawdown Current decline from peak	-5.23%	-5.52%	+0.29%
Average Drawdown Average peak-to-trough decline	-21.40%	-24.28%	+2.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.20%	3.46%	-0.26%

Volatility

IUSG vs. SPYG - Volatility Comparison

iShares Core S&P U.S. Growth ETF (IUSG) and State Street SPDR Portfolio S&P 500 Growth ETF (SPYG) have volatilities of 7.16% and 7.26%, 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

	IUSG	SPYG	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.16%	7.26%	-0.10%
Volatility (6M) Calculated over the trailing 6-month period	13.66%	13.90%	-0.24%
Volatility (1Y) Calculated over the trailing 1-year period	16.92%	17.26%	-0.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.06%	21.36%	-0.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.48%	20.73%	-0.25%

IUSG vs. SPYG - Expense Ratio Comparison

Both IUSG and SPYG have an expense ratio of 0.04%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

IUSG vs. SPYG - Dividend Comparison

IUSG's dividend yield for the trailing twelve months is around 0.50%, which matches SPYG's 0.50% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IUSG iShares Core S&P U.S. Growth ETF	0.50%	0.53%	0.59%	1.12%	1.07%	0.59%	0.93%	1.64%	1.32%	1.28%	1.48%	1.29%
SPYG State Street SPDR Portfolio S&P 500 Growth ETF	0.50%	0.52%	0.60%	1.15%	1.03%	0.62%	0.90%	1.37%	1.51%	1.41%	1.55%	1.57%

Frequently Asked Questions

Can I hold both IUSG and SPYG in my portfolio?

With a correlation of 0.99, IUSG and SPYG 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, IUSG or SPYG?

SPYG has higher volatility (7.26%) compared to IUSG (7.16%). In terms of maximum drawdown, IUSG dropped -63.41% vs SPYG's -67.63%.

Which ETF is better, IUSG or SPYG?

On 10-year performance, SPYG leads with 18.05% vs 17.77% for IUSG. Both ETFs have the same 0.04% expense ratio. On volatility, IUSG has been the lower-risk option at 7.16%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IUSG or SPYG?

Over the 10-year period, SPYG has performed better with a 18.05% return vs 17.77%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IUSG or SPYG?

IUSG and SPYG have the same expense ratio: 0.04% per year.

Which ETF pays a higher dividend yield, IUSG or SPYG?

IUSG and SPYG have nearly identical dividend yields, around 0.50%.

What is the main difference between IUSG and SPYG?

IUSG is categorized as Large Cap Growth Equities, while SPYG is S&P 500. IUSG tracks S&P 900 Growth Index, while SPYG tracks S&P 500 Growth Index. They also come from different issuers: iShares and State Street.

Which has better risk-adjusted returns?

IUSG currently has the higher Sharpe Ratio (1.60 vs 1.57), 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.