BUYB vs. IUS

Last updated Jun 30, 2026

BUYB (ProShares S&P 500 Buyback Aristocrats ETF) and IUS (Invesco RAFI Strategic US ETF) are both Large Cap Blend Equities funds - BUYB tracks the S&P 500 Buyback Index while IUS tracks the Invesco Strategic US Index. Both are passively managed. At a 0.48 correlation, their price movements are largely independent. BUYB charges 0.39%/yr vs 0.19%/yr for IUS.

Performance

BUYB vs. IUS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares S&P 500 Buyback Aristocrats ETF (BUYB) and Invesco RAFI Strategic US ETF (IUS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

BUYB

• 1D: 0.31%
• 1M: 2.91%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

IUS

• 1D: 0.26%
• 1M: 0.09%
• YTD: 15.51%
• 6M: 14.81%
• 1Y: 29.66%
• 3Y*: 19.29%
• 5Y*: 13.84%
• 10Y*: —

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

BUYB vs. IUS - Yearly Performance Comparison

	2026 (YTD)
BUYB ProShares S&P 500 Buyback Aristocrats ETF	4.16%
IUS Invesco RAFI Strategic US ETF	2.69%

Correlation

The correlation between BUYB and IUS is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 7, 2026	0.48

Return for Risk

BUYB vs. IUS — Risk / Return Rank

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

BUYB

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

IUS

IUS Risk / Return Rank: 92
IUS Sharpe Ratio Rank: 93
IUS Sortino Ratio Rank: 92
IUS Omega Ratio Rank: 91
IUS Calmar Ratio Rank: 90
IUS Martin Ratio Rank: 93

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.

BUYB vs. IUS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares S&P 500 Buyback Aristocrats ETF (BUYB) and Invesco RAFI Strategic US ETF (IUS). 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.

	BUYB	IUS	Difference
Sharpe ratio: Return per unit of total volatility	—	2.80	—
Sortino ratio: Return per unit of downside risk	—	3.83	—
Omega ratio: Gain probability vs. loss probability	—	1.51	—
Calmar ratio: Return relative to maximum drawdown	—	4.85	—
Martin ratio: Return relative to average drawdown	—	20.03	—

Drawdowns

BUYB vs. IUS - Drawdown Comparison

The maximum BUYB drawdown since its inception was -2.31%, smaller than the maximum IUS drawdown of -34.67%. Use the drawdown chart below to compare losses from any high point for BUYB and IUS.

Drawdown Indicators

	BUYB	IUS	Difference
Max Drawdown Largest peak-to-trough decline	-2.31%	-34.67%	+32.36%
Max Drawdown (1Y) Largest decline over 1 year	—	-6.15%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-15.61%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-18.72%	—
Current Drawdown Current decline from peak	0.00%	-0.83%	+0.83%
Average Drawdown Average peak-to-trough decline	-0.72%	-3.84%	+3.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.48%	—

Volatility

Volatility by Period

	BUYB	IUS	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	3.80%	—
Volatility (6M) Calculated over the trailing 6-month period	—	8.04%	—
Volatility (1Y) Calculated over the trailing 1-year period	11.15%	10.66%	+0.49%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.15%	15.03%	-3.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	11.15%	18.01%	-6.86%

BUYB vs. IUS - Expense Ratio Comparison

BUYB has a 0.39% expense ratio, which is higher than IUS's 0.19% expense ratio.

Dividends

BUYB vs. IUS - Dividend Comparison

BUYB's dividend yield for the trailing twelve months is around 0.12%, less than IUS's 1.29% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
BUYB ProShares S&P 500 Buyback Aristocrats ETF	0.12%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IUS Invesco RAFI Strategic US ETF	1.29%	1.48%	1.52%	1.72%	1.78%	1.46%	1.74%	1.77%	0.73%

Frequently Asked Questions

Can I hold both BUYB and IUS in my portfolio?

BUYB and IUS have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BUYB or IUS?

On fees, IUS is cheaper at 0.19% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, BUYB or IUS?

IUS is cheaper with a 0.19% expense ratio, compared with 0.39% for BUYB.

Which ETF pays a higher dividend yield, BUYB or IUS?

IUS has the higher dividend yield at 1.29%, compared with 0.12% for BUYB.

What is the main difference between BUYB and IUS?

BUYB tracks S&P 500 Buyback Index, while IUS tracks Invesco Strategic US Index. They also come from different issuers: ProShares and Invesco. Their fees differ too: 0.39% for BUYB and 0.19% for IUS.