MFUS vs. IUSG

Last updated Jun 5, 2026

MFUS (PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF) and IUSG (iShares Core S&P U.S. Growth ETF) are both Large Cap Growth Equities funds - MFUS tracks the RAFI Dynamic Multi-Factor U.S. Index​ while IUSG tracks the Russell 3000 Growth Index. Both are passively managed. Over the past 5 years, MFUS returned 12.86%/yr vs 15.67%/yr for IUSG. A 0.78 correlation means they provide meaningful diversification when combined. MFUS charges 0.30%/yr vs 0.04%/yr for IUSG.

Performance

MFUS vs. IUSG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS) and iShares Core S&P U.S. Growth ETF (IUSG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MFUS achieves a 16.59% return, which is significantly higher than IUSG's 14.00% return.

MFUS

• 1D: 0.19%
• 1M: 4.47%
• YTD: 16.59%
• 6M: 16.69%
• 1Y: 28.65%
• 3Y*: 22.52%
• 5Y*: 12.86%
• 10Y*: —

IUSG

• 1D: -0.07%
• 1M: 6.40%
• YTD: 14.00%
• 6M: 13.31%
• 1Y: 33.47%
• 3Y*: 27.62%
• 5Y*: 15.67%
• 10Y*: 17.82%

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

MFUS vs. IUSG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	16.59%	16.02%	20.17%	12.19%	-5.82%	24.10%	10.64%	26.17%	-7.30%	11.20%
IUSG iShares Core S&P U.S. Growth ETF	14.00%	21.23%	34.70%	29.28%	-28.81%	31.26%	32.65%	30.62%	-0.79%	8.54%

Correlation

The correlation between MFUS and IUSG is 0.65, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.65
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.76
Correlation (All Time) Calculated using the full available price history since Sep 7, 2017	0.78

The correlation between MFUS and IUSG shifts across timeframes, from 0.65 (1 year) to 0.78 (all time), reflecting how their relationship changes across market environments.

MFUS vs. IUSG - Sectors Allocation Comparison

Sectors	MFUS	IUSG
Technology	21.8%	48.0%
Healthcare	13.5%	6.2%
Industrials	12.6%	7.5%
Financial Services	12.6%	8.8%
Consumer Cyclical	10.6%	9.3%
Consumer Defensive	10.3%	1.0%
Energy	7.0%	0.2%
Communication Services	5.3%	17.1%
Basic Materials	2.8%	0.5%
Real Estate	1.8%	0.9%
Utilities	1.7%	0.5%

Return for Risk

MFUS vs. IUSG — Risk / Return Rank

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

MFUS

MFUS Risk / Return Rank: 84
MFUS Sharpe Ratio Rank: 83
MFUS Sortino Ratio Rank: 86
MFUS Omega Ratio Rank: 81
MFUS Calmar Ratio Rank: 84
MFUS Martin Ratio Rank: 87

IUSG

IUSG Risk / Return Rank: 61
IUSG Sharpe Ratio Rank: 65
IUSG Sortino Ratio Rank: 63
IUSG Omega Ratio Rank: 62
IUSG Calmar Ratio Rank: 53
IUSG Martin Ratio Rank: 62

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.

MFUS vs. IUSG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS) and iShares Core S&P U.S. Growth ETF (IUSG). 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.

	MFUS	IUSG	Difference
Sharpe ratio: Return per unit of total volatility	2.69	2.14	+0.55
Sortino ratio: Return per unit of downside risk	3.85	2.90	+0.95
Omega ratio: Gain probability vs. loss probability	1.48	1.37	+0.11
Calmar ratio: Return relative to maximum drawdown	4.51	2.57	+1.93
Martin ratio: Return relative to average drawdown	18.52	10.95	+7.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MFUS vs. IUSG - Sharpe Ratio Comparison

The current MFUS Sharpe Ratio is 2.69, which is comparable to the IUSG Sharpe Ratio of 2.14. The chart below compares the historical Sharpe Ratios of MFUS and IUSG, 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

	MFUS	IUSG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.69	2.14	+0.55
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.86	0.75	+0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.88	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.79	0.38	+0.41

Drawdowns

MFUS vs. IUSG - Drawdown Comparison

The maximum MFUS drawdown since its inception was -35.21%, smaller than the maximum IUSG drawdown of -63.41%. Use the drawdown chart below to compare losses from any high point for MFUS and IUSG.

Drawdown Indicators

	MFUS	IUSG	Difference
Max Drawdown Largest peak-to-trough decline	-35.21%	-63.41%	+28.20%
Max Drawdown (1Y) Largest decline over 1 year	-6.39%	-13.07%	+6.68%
Max Drawdown (3Y) Largest decline over 3 years	-15.39%	-22.28%	+6.89%
Max Drawdown (5Y) Largest decline over 5 years	-18.22%	-32.21%	+13.99%
Max Drawdown (10Y) Largest decline over 10 years	—	-32.35%	—
Current Drawdown Current decline from peak	0.00%	-1.05%	+1.05%
Average Drawdown Average peak-to-trough decline	-3.99%	-21.44%	+17.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.55%	3.06%	-1.51%

Volatility

MFUS vs. IUSG - Volatility Comparison

The current volatility for PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS) is 2.97%, while iShares Core S&P U.S. Growth ETF (IUSG) has a volatility of 4.22%. This indicates that MFUS experiences smaller price fluctuations and is considered to be less risky than IUSG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MFUS	IUSG	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.97%	4.22%	-1.25%
Volatility (6M) Calculated over the trailing 6-month period	8.22%	12.23%	-4.01%
Volatility (1Y) Calculated over the trailing 1-year period	10.71%	15.71%	-5.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.03%	20.86%	-5.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.35%	20.40%	-3.05%

MFUS vs. IUSG - Expense Ratio Comparison

MFUS has a 0.30% expense ratio, which is higher than IUSG's 0.04% expense ratio.

Dividends

MFUS vs. IUSG - Dividend Comparison

MFUS's dividend yield for the trailing twelve months is around 1.35%, more than IUSG's 0.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IUSG iShares Core S&P U.S. Growth ETF	0.47%	0.53%	0.59%	1.12%	1.07%	0.59%	0.93%	1.64%	1.32%	1.28%	1.48%	1.29%
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	1.35%	1.54%	1.45%	1.96%	2.07%	1.35%	1.72%	1.89%	1.69%	1.01%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MFUS and IUSG in my portfolio?

MFUS and IUSG have a correlation of 0.65, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MFUS or IUSG?

IUSG has higher volatility (4.22%) compared to MFUS (2.97%). In terms of maximum drawdown, MFUS dropped -35.21% vs IUSG's -63.41%.

Which ETF is better, MFUS or IUSG?

On 5-year performance, IUSG leads with 15.67% vs 12.86% for MFUS. On fees, IUSG is cheaper at 0.04% per year. On volatility, MFUS has been the lower-risk option at 2.97%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MFUS or IUSG?

Over the 5-year period, IUSG has performed better with a 15.67% return vs 12.86%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MFUS or IUSG?

IUSG is cheaper with a 0.04% expense ratio, compared with 0.30% for MFUS.

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

MFUS has the higher dividend yield at 1.35%, compared with 0.47% for IUSG.

What is the main difference between MFUS and IUSG?

MFUS tracks RAFI Dynamic Multi-Factor U.S. Index​, while IUSG tracks Russell 3000 Growth Index. They also come from different issuers: PIMCO and iShares. Their fees differ too: 0.30% for MFUS and 0.04% for IUSG.

Which has better risk-adjusted returns?

MFUS currently has the higher Sharpe Ratio (2.69 vs 2.14), 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.