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ATWYX vs. WFSPX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

ATWYX vs. WFSPX

Last updated Jun 5, 2026

ATWYX (AB Tax-Managed Wealth Appreciation Strategy) and WFSPX (iShares S&P 500 Index Fund) are both mutual funds - ATWYX is a Global Equities fund managed by BlackRock, while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, ATWYX returned 11.97%/yr vs 15.46%/yr for WFSPX. With a 0.96 correlation, they move nearly in lockstep. ATWYX charges 0.38%/yr vs 0.03%/yr for WFSPX.

Performance

ATWYX vs. WFSPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Tax-Managed Wealth Appreciation Strategy (ATWYX) and iShares S&P 500 Index Fund (WFSPX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, ATWYX achieves a 11.47% return, which is significantly higher than WFSPX's 10.87% return. Over the past 10 years, ATWYX has underperformed WFSPX with an annualized return of 11.97%, while WFSPX has yielded a comparatively higher 15.46% annualized return.

ATWYX

1D
-0.69%
1M
2.21%
YTD
11.47%
6M
12.19%
1Y
28.18%
3Y*
20.86%
5Y*
10.91%
10Y*
11.97%

WFSPX

1D
-0.74%
1M
4.17%
YTD
10.87%
6M
10.77%
1Y
27.97%
3Y*
22.41%
5Y*
13.88%
10Y*
15.46%
*Multi-year figures are annualized to reflect compound growth (CAGR)

ATWYX vs. WFSPX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
ATWYX
AB Tax-Managed Wealth Appreciation Strategy		11.47%21.44%18.72%20.55%-18.58%20.45%12.70%25.56%-9.76%23.04%
WFSPX
iShares S&P 500 Index Fund		10.87%17.83%24.94%26.25%-18.14%28.63%18.43%31.45%-4.83%21.27%

Correlation

The correlation between ATWYX and WFSPX is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.96

Correlation (3Y)
Calculated over the trailing 3-year period

0.96

Correlation (5Y)
Calculated over the trailing 5-year period

0.96

Correlation (10Y)
Calculated over the trailing 10-year period

0.96

Correlation (All Time)
Calculated using the full available price history since Sep 4, 2003

0.96

The correlation between ATWYX and WFSPX has been stable across timeframes, ranging from 0.96 to 0.96 - a consistent structural relationship.

Compare stocks, funds, or ETFs

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AB Tax-Managed Wealth Appreciation Strategy

iShares S&P 500 Index Fund

Often compared with ATWYX:
ATWYX vs. PEYATWYX vs. FDFIXATWYX vs. QQQATWYX vs. CSUAXATWYX vs. SSGLXATWYX vs. GMGEXATWYX vs. FASGX
Often compared with WFSPX:
WFSPX vs. JLGMXWFSPX vs. VOOWFSPX vs. FSPGXWFSPX vs. FXAIXWFSPX vs. BRMKXWFSPX vs. IVVWFSPX vs. APGYX

Return for Risk

ATWYX vs. WFSPX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
ATWYX
ATWYX Risk / Return Rank: 6161
Overall Rank
ATWYX Sharpe Ratio Rank: 6060
Sharpe Ratio Rank
ATWYX Sortino Ratio Rank: 5555
Sortino Ratio Rank
ATWYX Omega Ratio Rank: 5757
Omega Ratio Rank
ATWYX Calmar Ratio Rank: 6161
Calmar Ratio Rank
ATWYX Martin Ratio Rank: 7070
Martin Ratio Rank
WFSPX
WFSPX Risk / Return Rank: 6666
Overall Rank
WFSPX Sharpe Ratio Rank: 6464
Sharpe Ratio Rank
WFSPX Sortino Ratio Rank: 5959
Sortino Ratio Rank
WFSPX Omega Ratio Rank: 6060
Omega Ratio Rank
WFSPX Calmar Ratio Rank: 6767
Calmar Ratio Rank
WFSPX Martin Ratio Rank: 7979
Martin Ratio Rank
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.

ATWYX vs. WFSPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Tax-Managed Wealth Appreciation Strategy (ATWYX) and iShares S&P 500 Index Fund (WFSPX). 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.

ATWYXWFSPXDifference
Sharpe ratioReturn per unit of total volatility
2.26
2.37

-0.11

Sortino ratioReturn per unit of downside risk
3.11
3.24

-0.13

Omega ratioGain probability vs. loss probability

1.41

1.43

-0.02

Calmar ratioReturn relative to maximum drawdown

2.95

3.16

-0.21

Martin ratioReturn relative to average drawdown

13.19

14.75

-1.56

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ATWYX vs. WFSPX - Sharpe Ratio Comparison

The current ATWYX Sharpe Ratio is 2.26, which is comparable to the WFSPX Sharpe Ratio of 2.37. The chart below compares the historical Sharpe Ratios of ATWYX and WFSPX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Sharpe Ratios by Period

ATWYXWFSPXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

2.26

2.37

-0.11

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.68

0.83

-0.14

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.72

0.86

-0.14

Sharpe Ratio (All Time)

Calculated using the full available price history

0.44

0.13

+0.31

Drawdowns

ATWYX vs. WFSPX - Drawdown Comparison

The maximum ATWYX drawdown since its inception was -59.14%, roughly equal to the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for ATWYX and WFSPX.

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Drawdown Indicators

ATWYXWFSPXDifference

Max Drawdown

Largest peak-to-trough decline

-59.14%

-58.21%

-0.93%

Max Drawdown (1Y)

Largest decline over 1 year

-9.75%

-8.90%

-0.85%

Max Drawdown (3Y)

Largest decline over 3 years

-17.58%

-18.74%

+1.16%

Max Drawdown (5Y)

Largest decline over 5 years

-26.21%

-24.51%

-1.70%

Max Drawdown (10Y)

Largest decline over 10 years

-34.33%

-33.74%

-0.59%

Current Drawdown

Current decline from peak

-0.69%

-0.74%

+0.05%

Average Drawdown

Average peak-to-trough decline

-9.98%

-12.77%

+2.79%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.18%

1.90%

+0.28%

Volatility

ATWYX vs. WFSPX - Volatility Comparison

AB Tax-Managed Wealth Appreciation Strategy (ATWYX) has a higher volatility of 3.66% compared to iShares S&P 500 Index Fund (WFSPX) at 2.92%. This indicates that ATWYX's price experiences larger fluctuations and is considered to be riskier than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

ATWYXWFSPXDifference

Volatility (1M)

Calculated over the trailing 1-month period

3.66%

2.92%

+0.74%

Volatility (6M)

Calculated over the trailing 6-month period

10.10%

8.99%

+1.11%

Volatility (1Y)

Calculated over the trailing 1-year period

12.74%

11.88%

+0.86%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

16.01%

16.88%

-0.87%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

16.75%

18.02%

-1.27%

ATWYX vs. WFSPX - Expense Ratio Comparison

ATWYX has a 0.38% expense ratio, which is higher than WFSPX's 0.03% expense ratio.

Dividends

ATWYX vs. WFSPX - Dividend Comparison

ATWYX's dividend yield for the trailing twelve months is around 3.96%, more than WFSPX's 1.58% yield.

PositionTTM20252024202320222021202020192018201720162015
ATWYX
AB Tax-Managed Wealth Appreciation Strategy		3.96%4.41%2.49%1.84%5.88%5.81%1.23%4.93%5.57%12.93%3.16%7.84%
WFSPX
iShares S&P 500 Index Fund		1.58%1.72%1.41%1.50%2.02%1.82%1.66%1.99%2.00%1.62%2.37%2.49%

Frequently Asked Questions

With a correlation of 0.96, ATWYX and WFSPX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

ATWYX has higher volatility (3.66%) compared to WFSPX (2.92%). In terms of maximum drawdown, ATWYX dropped -59.14% vs WFSPX's -58.21%.

WFSPX currently has the higher Sharpe Ratio (2.37 vs 2.26), 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.

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