PBMY vs. SMAX

Last updated Jun 4, 2026

PBMY (PGIM S&P 500 Buffer 20 ETF - May) and SMAX (iShares Large Cap Max Buffer Sep ETF) are both Defined Outcome funds. Both are actively managed. Over the past year, PBMY returned 10.11% vs 9.17% for SMAX. A 0.78 correlation means they provide meaningful diversification when combined. Both charge a 0.50% expense ratio.

Performance

PBMY vs. SMAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PGIM S&P 500 Buffer 20 ETF - May (PBMY) and iShares Large Cap Max Buffer Sep ETF (SMAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PBMY achieves a 3.80% return, which is significantly higher than SMAX's 3.09% return.

PBMY

• 1D: -0.19%
• 1M: 1.80%
• YTD: 3.80%
• 6M: 4.61%
• 1Y: 10.11%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SMAX

• 1D: -0.09%
• 1M: 1.09%
• YTD: 3.09%
• 6M: 3.54%
• 1Y: 9.17%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PBMY vs. SMAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024
PBMY PGIM S&P 500 Buffer 20 ETF - May	3.80%	9.89%	2.17%
SMAX iShares Large Cap Max Buffer Sep ETF	3.09%	8.01%	1.02%

Correlation

The correlation between PBMY and SMAX is 0.73, 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	0.73
Correlation (All Time) Calculated using the full available price history since Oct 2, 2024	0.78

The correlation between PBMY and SMAX has been stable across timeframes, ranging from 0.73 to 0.78 - a consistent structural relationship.

Return for Risk

PBMY vs. SMAX — Risk / Return Rank

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

PBMY

PBMY Risk / Return Rank: 96
PBMY Sharpe Ratio Rank: 93
PBMY Sortino Ratio Rank: 96
PBMY Omega Ratio Rank: 96
PBMY Calmar Ratio Rank: 96
PBMY Martin Ratio Rank: 97

SMAX

SMAX Risk / Return Rank: 93
SMAX Sharpe Ratio Rank: 93
SMAX Sortino Ratio Rank: 95
SMAX Omega Ratio Rank: 95
SMAX Calmar Ratio Rank: 86
SMAX Martin Ratio Rank: 94

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.

PBMY vs. SMAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PGIM S&P 500 Buffer 20 ETF - May (PBMY) and iShares Large Cap Max Buffer Sep ETF (SMAX). 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.

	PBMY	SMAX	Difference
Sharpe ratio: Return per unit of total volatility	3.42	3.46	-0.03
Sortino ratio: Return per unit of downside risk	5.42	5.32	+0.10
Omega ratio: Gain probability vs. loss probability	1.80	1.75	+0.04
Calmar ratio: Return relative to maximum drawdown	9.00	4.81	+4.19
Martin ratio: Return relative to average drawdown	50.32	26.11	+24.21
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PBMY vs. SMAX - Sharpe Ratio Comparison

The current PBMY Sharpe Ratio is 3.42, which is comparable to the SMAX Sharpe Ratio of 3.46. The chart below compares the historical Sharpe Ratios of PBMY and SMAX, 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

	PBMY	SMAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.42	3.46	-0.03
Sharpe Ratio (All Time) Calculated using the full available price history	1.58	2.01	-0.43

Drawdowns

PBMY vs. SMAX - Drawdown Comparison

The maximum PBMY drawdown since its inception was -8.11%, which is greater than SMAX's maximum drawdown of -3.90%. Use the drawdown chart below to compare losses from any high point for PBMY and SMAX.

Drawdown Indicators

	PBMY	SMAX	Difference
Max Drawdown Largest peak-to-trough decline	-8.11%	-3.90%	-4.21%
Max Drawdown (1Y) Largest decline over 1 year	-1.13%	-1.91%	+0.78%
Current Drawdown Current decline from peak	-0.19%	-0.09%	-0.10%
Average Drawdown Average peak-to-trough decline	-0.39%	-0.40%	+0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.20%	0.35%	-0.15%

Volatility

PBMY vs. SMAX - Volatility Comparison

PGIM S&P 500 Buffer 20 ETF - May (PBMY) has a higher volatility of 0.92% compared to iShares Large Cap Max Buffer Sep ETF (SMAX) at 0.38%. This indicates that PBMY's price experiences larger fluctuations and is considered to be riskier than SMAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PBMY	SMAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.92%	0.38%	+0.54%
Volatility (6M) Calculated over the trailing 6-month period	2.21%	2.10%	+0.11%
Volatility (1Y) Calculated over the trailing 1-year period	2.97%	2.67%	+0.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.16%	3.67%	+3.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.16%	3.67%	+3.49%

PBMY vs. SMAX - Expense Ratio Comparison

Both PBMY and SMAX have an expense ratio of 0.50%.

Dividends

PBMY vs. SMAX - Dividend Comparison

PBMY's dividend yield for the trailing twelve months is around 0.07%, less than SMAX's 0.95% yield.

Position	TTM	2025	2024
PBMY PGIM S&P 500 Buffer 20 ETF - May	0.07%	0.08%	0.00%
SMAX iShares Large Cap Max Buffer Sep ETF	0.95%	0.98%	0.27%

Frequently Asked Questions

Can I hold both PBMY and SMAX in my portfolio?

PBMY and SMAX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PBMY or SMAX?

PBMY has higher volatility (0.92%) compared to SMAX (0.38%). In terms of maximum drawdown, PBMY dropped -8.11% vs SMAX's -3.90%.

Which ETF is better, PBMY or SMAX?

On 1-year performance, PBMY leads with 10.11% vs 9.17% for SMAX. Both ETFs have the same 0.50% expense ratio. On volatility, SMAX has been the lower-risk option at 0.38%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PBMY or SMAX?

Over the 1-year period, PBMY has performed better with a 10.11% return vs 9.17%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PBMY or SMAX?

PBMY and SMAX have the same expense ratio: 0.50% per year.

Which ETF pays a higher dividend yield, PBMY or SMAX?

SMAX has the higher dividend yield at 0.95%, compared with 0.07% for PBMY.

What is the main difference between PBMY and SMAX?

They also come from different issuers: PGIM and iShares.

Which has better risk-adjusted returns?

SMAX currently has the higher Sharpe Ratio (3.46 vs 3.42), 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.