SPINX vs. PUTW

Last updated Apr 1, 2026

Compare and contrast key facts about SEI Institutional Investments Trust S&P 500 Index Fund (SPINX) and WisdomTree Equity Premium Income Fund (PUTW).

SPINX is a passively managed fund by SEI that tracks the performance of the S&P 500 Index. It was launched on Dec 18, 2013. PUTW is a passively managed fund by WisdomTree that tracks the performance of the Volos U.S. Large Cap Target 2.5% PutWrite Index. It was launched on Feb 24, 2016. Both SPINX and PUTW are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

SPINX vs. PUTW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Institutional Investments Trust S&P 500 Index Fund (SPINX) and WisdomTree Equity Premium Income Fund (PUTW). The values are adjusted to include any dividend payments, if applicable.

SPINX vs. PUTW - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SPINX SEI Institutional Investments Trust S&P 500 Index Fund	-7.09%	17.89%	24.02%	26.24%	-18.27%	28.62%	18.35%	31.42%	-4.46%	21.74%
PUTW WisdomTree Equity Premium Income Fund	-1.66%	14.45%	17.18%	15.53%	-10.11%	20.94%	1.65%	13.55%	-7.16%	10.09%

Returns By Period

In the year-to-date period, SPINX achieves a -7.09% return, which is significantly lower than PUTW's -1.66% return. Over the past 10 years, SPINX has outperformed PUTW with an annualized return of 13.59%, while PUTW has yielded a comparatively lower 7.80% annualized return.

SPINX

• 1D: -0.41%
• 1M: -7.71%
• YTD: -7.09%
• 6M: -4.55%
• 1Y: 14.42%
• 3Y*: 16.85%
• 5Y*: 11.17%
• 10Y*: 13.59%

PUTW

• 1D: 2.60%
• 1M: -3.50%
• YTD: -1.66%
• 6M: 1.99%
• 1Y: 15.64%
• 3Y*: 13.04%
• 5Y*: 9.37%
• 10Y*: 7.80%

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

SPINX vs. PUTW - Expense Ratio Comparison

SPINX has a 0.12% expense ratio, which is lower than PUTW's 0.44% expense ratio.

PUTW

WisdomTree Equity Premium Income Fund

SPINX

SEI Institutional Investments Trust S&P 500 Index Fund

Return for Risk

SPINX vs. PUTW — Risk / Return Rank

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

SPINX

SPINX Risk / Return Rank: 45
SPINX Sharpe Ratio Rank: 39
SPINX Sortino Ratio Rank: 43
SPINX Omega Ratio Rank: 48
SPINX Calmar Ratio Rank: 41
SPINX Martin Ratio Rank: 53

PUTW

PUTW Risk / Return Rank: 72
PUTW Sharpe Ratio Rank: 63
PUTW Sortino Ratio Rank: 67
PUTW Omega Ratio Rank: 74
PUTW Calmar Ratio Rank: 72
PUTW Martin Ratio Rank: 85

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.

SPINX vs. PUTW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Institutional Investments Trust S&P 500 Index Fund (SPINX) and WisdomTree Equity Premium Income Fund (PUTW). 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.

	SPINX	PUTW	Difference
Sharpe ratio Return per unit of total volatility	0.84	1.10	-0.26
Sortino ratio Return per unit of downside risk	1.29	1.65	-0.35
Omega ratio Gain probability vs. loss probability	1.20	1.27	-0.08
Calmar ratio Return relative to maximum drawdown	1.06	1.62	-0.57
Martin ratio Return relative to average drawdown	5.13	8.70	-3.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPINX vs. PUTW - Sharpe Ratio Comparison

The current SPINX Sharpe Ratio is 0.84, which is comparable to the PUTW Sharpe Ratio of 1.10. The chart below compares the historical Sharpe Ratios of SPINX and PUTW, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SPINX	PUTW	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.84	1.10	-0.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.50	0.77	-0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.65	0.59	+0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.64	0.61	+0.03

Correlation

The correlation between SPINX and PUTW is 0.79, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

SPINX vs. PUTW - Dividend Comparison

SPINX's dividend yield for the trailing twelve months is around 12.81%, more than PUTW's 12.37% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPINX SEI Institutional Investments Trust S&P 500 Index Fund	12.81%	11.90%	26.02%	9.77%	9.59%	6.58%	3.58%	3.01%	4.94%	2.32%	1.97%	2.29%
PUTW WisdomTree Equity Premium Income Fund	12.37%	13.18%	11.99%	8.94%	3.27%	0.00%	1.43%	1.47%	6.46%	3.52%	2.27%	0.00%

Drawdowns

SPINX vs. PUTW - Drawdown Comparison

The maximum SPINX drawdown since its inception was -33.82%, which is greater than PUTW's maximum drawdown of -28.40%. Use the drawdown chart below to compare losses from any high point for SPINX and PUTW.

Drawdown Indicators

	SPINX	PUTW	Difference
Max Drawdown Largest peak-to-trough decline	-33.82%	-28.40%	-5.42%
Max Drawdown (1Y) Largest decline over 1 year	-12.11%	-9.90%	-2.21%
Max Drawdown (5Y) Largest decline over 5 years	-32.91%	-16.56%	-16.35%
Max Drawdown (10Y) Largest decline over 10 years	-33.82%	-28.40%	-5.42%
Current Drawdown Current decline from peak	-13.57%	-4.73%	-8.84%
Average Drawdown Average peak-to-trough decline	-5.25%	-3.48%	-1.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.50%	1.85%	+0.65%

Volatility

SPINX vs. PUTW - Volatility Comparison

The current volatility for SEI Institutional Investments Trust S&P 500 Index Fund (SPINX) is 4.25%, while WisdomTree Equity Premium Income Fund (PUTW) has a volatility of 4.77%. This indicates that SPINX experiences smaller price fluctuations and is considered to be less risky than PUTW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPINX	PUTW	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.25%	4.77%	-0.52%
Volatility (6M) Calculated over the trailing 6-month period	9.13%	7.82%	+1.31%
Volatility (1Y) Calculated over the trailing 1-year period	18.15%	14.33%	+3.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.47%	12.21%	+10.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.92%	13.23%	+7.69%