MSPIX vs. KLGAX

Last updated Jun 3, 2026

MSPIX (MainStay S&P 500 Index Fund) and KLGAX (MainStay WMC Growth Fund) are both mutual funds - MSPIX is a Large Cap Blend Equities fund managed by New York Life, while KLGAX is a Large Cap Growth Equities fund managed by New York Life. Over the past 10 years, MSPIX returned 15.36%/yr vs 13.86%/yr for KLGAX. Their correlation of 0.93 suggests significant overlap in exposure. MSPIX charges 0.25%/yr vs 1.02%/yr for KLGAX.

Performance

MSPIX vs. KLGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MainStay S&P 500 Index Fund (MSPIX) and MainStay WMC Growth Fund (KLGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MSPIX achieves a 11.43% return, which is significantly higher than KLGAX's 6.38% return. Over the past 10 years, MSPIX has outperformed KLGAX with an annualized return of 15.36%, while KLGAX has yielded a comparatively lower 13.86% annualized return.

MSPIX

• 1D: 0.28%
• 1M: 5.22%
• YTD: 11.43%
• 6M: 11.78%
• 1Y: 29.21%
• 3Y*: 22.36%
• 5Y*: 13.89%
• 10Y*: 15.36%

KLGAX

• 1D: 1.55%
• 1M: 5.88%
• YTD: 6.38%
• 6M: 5.72%
• 1Y: 21.81%
• 3Y*: 20.67%
• 5Y*: 9.83%
• 10Y*: 13.86%

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

MSPIX vs. KLGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MSPIX MainStay S&P 500 Index Fund	11.43%	17.55%	24.31%	26.29%	-18.33%	28.46%	18.14%	31.02%	-4.47%	21.38%
KLGAX MainStay WMC Growth Fund	6.38%	16.60%	25.22%	38.63%	-33.53%	17.85%	31.88%	29.41%	-4.33%	30.05%

Correlation

The correlation between MSPIX and KLGAX is 0.92, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Aug 8, 2006	0.93

The correlation between MSPIX and KLGAX has been stable across timeframes, ranging from 0.92 to 0.94 - a consistent structural relationship.

Return for Risk

MSPIX vs. KLGAX — Risk / Return Rank

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

MSPIX

MSPIX Risk / Return Rank: 74
MSPIX Sharpe Ratio Rank: 76
MSPIX Sortino Ratio Rank: 67
MSPIX Omega Ratio Rank: 67
MSPIX Calmar Ratio Rank: 74
MSPIX Martin Ratio Rank: 84

KLGAX

KLGAX Risk / Return Rank: 20
KLGAX Sharpe Ratio Rank: 24
KLGAX Sortino Ratio Rank: 22
KLGAX Omega Ratio Rank: 23
KLGAX Calmar Ratio Rank: 15
KLGAX Martin Ratio Rank: 17

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.

MSPIX vs. KLGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MainStay S&P 500 Index Fund (MSPIX) and MainStay WMC Growth Fund (KLGAX). 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.

	MSPIX	KLGAX	Difference
Sharpe ratio Return per unit of total volatility	2.53	1.43	+1.10
Sortino ratio Return per unit of downside risk	3.43	1.99	+1.45
Omega ratio Gain probability vs. loss probability	1.46	1.26	+0.20
Calmar ratio Return relative to maximum drawdown	3.39	1.40	+1.99
Martin ratio Return relative to average drawdown	15.85	4.83	+11.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MSPIX vs. KLGAX - Sharpe Ratio Comparison

The current MSPIX Sharpe Ratio is 2.53, which is higher than the KLGAX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of MSPIX and KLGAX, 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

	MSPIX	KLGAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.53	1.43	+1.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.83	0.44	+0.39
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.85	0.63	+0.22
Sharpe Ratio (All Time) Calculated using the full available price history	0.61	0.46	+0.15

Drawdowns

MSPIX vs. KLGAX - Drawdown Comparison

The maximum MSPIX drawdown since its inception was -55.30%, roughly equal to the maximum KLGAX drawdown of -55.04%. Use the drawdown chart below to compare losses from any high point for MSPIX and KLGAX.

Drawdown Indicators

	MSPIX	KLGAX	Difference
Max Drawdown Largest peak-to-trough decline	-55.30%	-55.04%	-0.26%
Max Drawdown (1Y) Largest decline over 1 year	-8.93%	-16.03%	+7.10%
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	-22.71%	+3.95%
Max Drawdown (5Y) Largest decline over 5 years	-24.64%	-39.29%	+14.65%
Max Drawdown (10Y) Largest decline over 10 years	-33.78%	-39.29%	+5.51%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-8.70%	-9.49%	+0.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.91%	4.66%	-2.75%

Volatility

MSPIX vs. KLGAX - Volatility Comparison

The current volatility for MainStay S&P 500 Index Fund (MSPIX) is 2.81%, while MainStay WMC Growth Fund (KLGAX) has a volatility of 3.41%. This indicates that MSPIX experiences smaller price fluctuations and is considered to be less risky than KLGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MSPIX	KLGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.81%	3.41%	-0.60%
Volatility (6M) Calculated over the trailing 6-month period	9.00%	12.06%	-3.06%
Volatility (1Y) Calculated over the trailing 1-year period	11.89%	15.96%	-4.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.91%	22.53%	-5.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.08%	21.95%	-3.87%

MSPIX vs. KLGAX - Expense Ratio Comparison

MSPIX has a 0.25% expense ratio, which is lower than KLGAX's 1.02% expense ratio.

Dividends

MSPIX vs. KLGAX - Dividend Comparison

MSPIX's dividend yield for the trailing twelve months is around 1.12%, less than KLGAX's 3.18% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
KLGAX MainStay WMC Growth Fund	3.18%	3.38%	3.96%	0.00%	0.00%	26.57%	3.69%	3.43%	11.10%	3.85%	8.73%	7.55%
MSPIX MainStay S&P 500 Index Fund	1.12%	1.25%	5.31%	4.17%	10.37%	4.57%	8.86%	17.41%	14.61%	15.26%	9.79%	5.75%

Frequently Asked Questions

Can I hold both MSPIX and KLGAX in my portfolio?

With a correlation of 0.92, MSPIX and KLGAX 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.

Which is riskier, MSPIX or KLGAX?

KLGAX has higher volatility (3.41%) compared to MSPIX (2.81%). In terms of maximum drawdown, MSPIX dropped -55.30% vs KLGAX's -55.04%.

Which has better risk-adjusted returns?

MSPIX currently has the higher Sharpe Ratio (2.53 vs 1.43), 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.