TOPT vs. MFUS

Last updated Jun 4, 2026

TOPT (iShares Top 20 U.S. Stocks ETF) and MFUS (PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF) are both Large Cap Growth Equities funds - TOPT tracks the S&P 500 Top 20 Select Index while MFUS tracks the RAFI Dynamic Multi-Factor U.S. Index​. Both are passively managed. Over the past year, TOPT returned 30.17% vs 28.04% for MFUS. A 0.62 correlation means they provide meaningful diversification when combined. TOPT charges 0.20%/yr vs 0.30%/yr for MFUS.

Performance

TOPT vs. MFUS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Top 20 U.S. Stocks ETF (TOPT) and PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TOPT achieves a 8.94% return, which is significantly lower than MFUS's 16.37% return.

TOPT

• 1D: -0.87%
• 1M: 5.40%
• YTD: 8.94%
• 6M: 8.53%
• 1Y: 30.17%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MFUS

• 1D: 0.03%
• 1M: 5.72%
• YTD: 16.37%
• 6M: 16.58%
• 1Y: 28.04%
• 3Y*: 22.25%
• 5Y*: 12.82%
• 10Y*: —

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

TOPT vs. MFUS - Yearly Performance Comparison

	2026 (YTD)	2025	2024
TOPT iShares Top 20 U.S. Stocks ETF	8.94%	20.35%	5.03%
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	16.37%	16.02%	-1.33%

Correlation

The correlation between TOPT and MFUS is 0.56, 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	0.56
Correlation (All Time) Calculated using the full available price history since Oct 25, 2024	0.62

The correlation between TOPT and MFUS has been stable across timeframes, ranging from 0.56 to 0.62 - a consistent structural relationship.

TOPT vs. MFUS - Sectors Allocation Comparison

Sectors	TOPT	MFUS
Technology	43.6%	21.8%
Communication Services	19.4%	5.3%
Financial Services	12.4%	12.6%
Consumer Cyclical	9.2%	10.6%
Healthcare	7.7%	13.5%
Consumer Defensive	4.8%	10.3%
Energy	3.0%	7.0%
Basic Materials	-	2.8%
Industrials	-	12.6%
Real Estate	-	1.8%
Utilities	-	1.7%

Return for Risk

TOPT vs. MFUS — Risk / Return Rank

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

TOPT

TOPT Risk / Return Rank: 58
TOPT Sharpe Ratio Rank: 65
TOPT Sortino Ratio Rank: 65
TOPT Omega Ratio Rank: 62
TOPT Calmar Ratio Rank: 46
TOPT Martin Ratio Rank: 51

MFUS

MFUS Risk / Return Rank: 82
MFUS Sharpe Ratio Rank: 80
MFUS Sortino Ratio Rank: 83
MFUS Omega Ratio Rank: 78
MFUS Calmar Ratio Rank: 83
MFUS Martin Ratio Rank: 86

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.

TOPT vs. MFUS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Top 20 U.S. Stocks ETF (TOPT) and PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS). 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.

	TOPT	MFUS	Difference
Sharpe ratio: Return per unit of total volatility	2.22	2.63	-0.41
Sortino ratio: Return per unit of downside risk	3.07	3.77	-0.70
Omega ratio: Gain probability vs. loss probability	1.39	1.47	-0.08
Calmar ratio: Return relative to maximum drawdown	2.31	4.41	-2.10
Martin ratio: Return relative to average drawdown	8.73	18.13	-9.39
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TOPT vs. MFUS - Sharpe Ratio Comparison

The current TOPT Sharpe Ratio is 2.22, which is comparable to the MFUS Sharpe Ratio of 2.63. The chart below compares the historical Sharpe Ratios of TOPT and MFUS, 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

	TOPT	MFUS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.22	2.63	-0.41
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.86	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.12	0.79	+0.34

Drawdowns

TOPT vs. MFUS - Drawdown Comparison

The maximum TOPT drawdown since its inception was -21.21%, smaller than the maximum MFUS drawdown of -35.21%. Use the drawdown chart below to compare losses from any high point for TOPT and MFUS.

Drawdown Indicators

	TOPT	MFUS	Difference
Max Drawdown Largest peak-to-trough decline	-21.21%	-35.21%	+14.00%
Max Drawdown (1Y) Largest decline over 1 year	-13.13%	-6.39%	-6.74%
Max Drawdown (3Y) Largest decline over 3 years	—	-15.39%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-18.22%	—
Current Drawdown Current decline from peak	-1.25%	0.00%	-1.25%
Average Drawdown Average peak-to-trough decline	-3.48%	-4.00%	+0.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.46%	1.55%	+1.91%

Volatility

TOPT vs. MFUS - Volatility Comparison

iShares Top 20 U.S. Stocks ETF (TOPT) has a higher volatility of 3.46% compared to PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS) at 3.19%. This indicates that TOPT's price experiences larger fluctuations and is considered to be riskier than MFUS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TOPT	MFUS	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.46%	3.19%	+0.27%
Volatility (6M) Calculated over the trailing 6-month period	10.14%	8.22%	+1.92%
Volatility (1Y) Calculated over the trailing 1-year period	13.68%	10.72%	+2.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.83%	15.03%	+4.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.83%	17.35%	+2.48%

TOPT vs. MFUS - Expense Ratio Comparison

TOPT has a 0.20% expense ratio, which is lower than MFUS's 0.30% expense ratio.

Dividends

TOPT vs. MFUS - Dividend Comparison

TOPT's dividend yield for the trailing twelve months is around 0.36%, less than MFUS's 1.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	1.36%	1.54%	1.45%	1.96%	2.07%	1.35%	1.72%	1.89%	1.69%	1.01%
TOPT iShares Top 20 U.S. Stocks ETF	0.36%	0.38%	0.08%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TOPT and MFUS in my portfolio?

TOPT and MFUS have a correlation of 0.56, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TOPT or MFUS?

TOPT has higher volatility (3.46%) compared to MFUS (3.19%). In terms of maximum drawdown, TOPT dropped -21.21% vs MFUS's -35.21%.

Which ETF is better, TOPT or MFUS?

On 1-year performance, TOPT leads with 30.17% vs 28.04% for MFUS. On fees, TOPT is cheaper at 0.20% per year. On volatility, MFUS has been the lower-risk option at 3.19%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, TOPT or MFUS?

Over the 1-year period, TOPT has performed better with a 30.17% return vs 28.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, TOPT or MFUS?

TOPT is cheaper with a 0.20% expense ratio, compared with 0.30% for MFUS.

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

MFUS has the higher dividend yield at 1.36%, compared with 0.36% for TOPT.

What is the main difference between TOPT and MFUS?

TOPT tracks S&P 500 Top 20 Select Index, while MFUS tracks RAFI Dynamic Multi-Factor U.S. Index​. They also come from different issuers: iShares and PIMCO. Their fees differ too: 0.20% for TOPT and 0.30% for MFUS.

Which has better risk-adjusted returns?

MFUS currently has the higher Sharpe Ratio (2.63 vs 2.22), 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.