PSFO vs. CALF

Last updated Jun 24, 2026

PSFO (Pacer Swan SOS Flex (October) ETF) and CALF (Pacer US Small Cap Cash Cows 100 ETF) are both exchange-traded funds - PSFO is a Options Trading fund actively managed by Pacer, while CALF is a Small Cap Blend Equities fund tracking the Pacer US Small Cap Cash Cows Index. PSFO is actively managed, while CALF is passively managed. Over the past 3 years, PSFO returned 12.39%/yr vs 9.45%/yr for CALF. A 0.67 correlation means they provide meaningful diversification when combined. PSFO charges 0.60%/yr vs 0.59%/yr for CALF.

Performance

PSFO vs. CALF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Pacer Swan SOS Flex (October) ETF (PSFO) and Pacer US Small Cap Cash Cows 100 ETF (CALF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PSFO achieves a 5.92% return, which is significantly lower than CALF's 10.96% return.

PSFO

• 1D: -0.63%
• 1M: -0.07%
• YTD: 5.92%
• 6M: 5.46%
• 1Y: 16.06%
• 3Y*: 12.39%
• 5Y*: —
• 10Y*: —

CALF

• 1D: 0.34%
• 1M: 0.78%
• YTD: 10.96%
• 6M: 9.95%
• 1Y: 26.19%
• 3Y*: 9.45%
• 5Y*: 3.49%
• 10Y*: —

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

PSFO vs. CALF - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
PSFO Pacer Swan SOS Flex (October) ETF	5.92%	12.93%	10.78%	20.03%	-0.34%	4.84%
CALF Pacer US Small Cap Cash Cows 100 ETF	10.96%	2.33%	-7.41%	35.43%	-15.20%	3.20%

Correlation

The correlation between PSFO and CALF 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 (3Y) Calculated over the trailing 3-year period	0.61
Correlation (All Time) Calculated using the full available price history since Oct 1, 2021	0.67

The correlation between PSFO and CALF shifts across timeframes, from 0.56 (1 year) to 0.67 (all time), reflecting how their relationship changes across market environments.

Return for Risk

PSFO vs. CALF — Risk / Return Rank

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

PSFO

PSFO Risk / Return Rank: 76
PSFO Sharpe Ratio Rank: 75
PSFO Sortino Ratio Rank: 79
PSFO Omega Ratio Rank: 79
PSFO Calmar Ratio Rank: 68
PSFO Martin Ratio Rank: 81

CALF

CALF Risk / Return Rank: 60
CALF Sharpe Ratio Rank: 50
CALF Sortino Ratio Rank: 52
CALF Omega Ratio Rank: 47
CALF Calmar Ratio Rank: 83
CALF Martin Ratio Rank: 67

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.

PSFO vs. CALF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Pacer Swan SOS Flex (October) ETF (PSFO) and Pacer US Small Cap Cash Cows 100 ETF (CALF). 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.

	PSFO	CALF	Difference
Sharpe ratio: Return per unit of total volatility	2.20	1.64	+0.55
Sortino ratio: Return per unit of downside risk	3.19	2.40	+0.78
Omega ratio: Gain probability vs. loss probability	1.42	1.29	+0.13
Calmar ratio: Return relative to maximum drawdown	3.10	4.28	-1.18
Martin ratio: Return relative to average drawdown	14.83	11.68	+3.16

PSFO vs. CALF - Sharpe Ratio Comparison

The current PSFO Sharpe Ratio is 2.20, which is higher than the CALF Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of PSFO and CALF, 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

PSFO vs. CALF - Drawdown Comparison

The maximum PSFO drawdown since its inception was -12.09%, smaller than the maximum CALF drawdown of -47.58%. Use the drawdown chart below to compare losses from any high point for PSFO and CALF.

Drawdown Indicators

	PSFO	CALF	Difference
Max Drawdown Largest peak-to-trough decline	-12.09%	-47.58%	+35.49%
Max Drawdown (1Y) Largest decline over 1 year	-5.20%	-6.15%	+0.95%
Max Drawdown (3Y) Largest decline over 3 years	-12.09%	-34.22%	+22.13%
Max Drawdown (5Y) Largest decline over 5 years	—	-34.22%	—
Current Drawdown Current decline from peak	-0.89%	-4.01%	+3.12%
Average Drawdown Average peak-to-trough decline	-1.74%	-10.69%	+8.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.09%	2.25%	-1.16%

Volatility

PSFO vs. CALF - Volatility Comparison

The current volatility for Pacer Swan SOS Flex (October) ETF (PSFO) is 2.03%, while Pacer US Small Cap Cash Cows 100 ETF (CALF) has a volatility of 5.39%. This indicates that PSFO experiences smaller price fluctuations and is considered to be less risky than CALF based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PSFO	CALF	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.03%	5.39%	-3.36%
Volatility (6M) Calculated over the trailing 6-month period	5.69%	10.92%	-5.23%
Volatility (1Y) Calculated over the trailing 1-year period	7.38%	16.02%	-8.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.03%	23.39%	-13.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.03%	25.97%	-15.94%

PSFO vs. CALF - Expense Ratio Comparison

PSFO has a 0.60% expense ratio, which is higher than CALF's 0.59% expense ratio.

Dividends

PSFO vs. CALF - Dividend Comparison

PSFO has not paid dividends to shareholders, while CALF's dividend yield for the trailing twelve months is around 1.24%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
CALF Pacer US Small Cap Cash Cows 100 ETF	1.24%	1.43%	1.07%	1.18%	0.85%	2.63%	0.82%	0.99%	1.39%	0.70%
PSFO Pacer Swan SOS Flex (October) ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both PSFO and CALF in my portfolio?

PSFO and CALF 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, PSFO or CALF?

CALF has higher volatility (5.39%) compared to PSFO (2.03%). In terms of maximum drawdown, PSFO dropped -12.09% vs CALF's -47.58%.

Which ETF is better, PSFO or CALF?

On 3-year performance, PSFO leads with 12.39% vs 9.45% for CALF. On fees, CALF is cheaper at 0.59% per year. On volatility, PSFO has been the lower-risk option at 2.03%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PSFO or CALF?

Over the 3-year period, PSFO has performed better with a 12.39% return vs 9.45%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PSFO or CALF?

CALF is cheaper with a 0.59% expense ratio, compared with 0.60% for PSFO.

Which ETF pays a higher dividend yield, PSFO or CALF?

CALF has the higher dividend yield at 1.24%, compared with 0.00% for PSFO.

What is the main difference between PSFO and CALF?

PSFO is categorized as Options Trading, while CALF is Small Cap Blend Equities. Their fees differ too: 0.60% for PSFO and 0.59% for CALF.

Which has better risk-adjusted returns?

PSFO currently has the higher Sharpe Ratio (2.20 vs 1.64), 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.