VGSLX vs. AIGYX

Last updated Jun 24, 2026

VGSLX (Vanguard Real Estate Index Fund Admiral Shares) and AIGYX (abrdn Realty Income & Growth Fund) are both REIT funds. Over the past 10 years, VGSLX returned 5.28%/yr vs 8.34%/yr for AIGYX. With a 0.98 correlation, they move nearly in lockstep. VGSLX charges 0.13%/yr vs 1.01%/yr for AIGYX.

Performance

VGSLX vs. AIGYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Real Estate Index Fund Admiral Shares (VGSLX) and abrdn Realty Income & Growth Fund (AIGYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VGSLX achieves a 10.34% return, which is significantly lower than AIGYX's 16.35% return. Over the past 10 years, VGSLX has underperformed AIGYX with an annualized return of 5.28%, while AIGYX has yielded a comparatively higher 8.34% annualized return.

VGSLX

• 1D: 1.06%
• 1M: -0.19%
• YTD: 10.34%
• 6M: 10.73%
• 1Y: 10.19%
• 3Y*: 10.80%
• 5Y*: 2.52%
• 10Y*: 5.28%

AIGYX

• 1D: 1.54%
• 1M: 0.48%
• YTD: 16.35%
• 6M: 16.35%
• 1Y: 19.64%
• 3Y*: 14.18%
• 5Y*: 8.74%
• 10Y*: 8.34%

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

VGSLX vs. AIGYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VGSLX Vanguard Real Estate Index Fund Admiral Shares	10.34%	3.18%	3.67%	13.13%	-26.20%	40.39%	-4.75%	28.90%	-5.99%	4.91%
AIGYX abrdn Realty Income & Growth Fund	16.35%	4.20%	9.61%	13.34%	-24.99%	62.09%	-6.59%	27.80%	-7.59%	8.52%

Correlation

The correlation between VGSLX and AIGYX 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	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.98
Correlation (All Time) Calculated using the full available price history since Nov 12, 2001	0.98

The correlation between VGSLX and AIGYX has been stable across timeframes, ranging from 0.92 to 0.98 - a consistent structural relationship.

Return for Risk

VGSLX vs. AIGYX — Risk / Return Rank

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

VGSLX

VGSLX Risk / Return Rank: 14
VGSLX Sharpe Ratio Rank: 11
VGSLX Sortino Ratio Rank: 11
VGSLX Omega Ratio Rank: 11
VGSLX Calmar Ratio Rank: 18
VGSLX Martin Ratio Rank: 18

AIGYX

AIGYX Risk / Return Rank: 39
AIGYX Sharpe Ratio Rank: 34
AIGYX Sortino Ratio Rank: 30
AIGYX Omega Ratio Rank: 31
AIGYX Calmar Ratio Rank: 56
AIGYX Martin Ratio Rank: 47

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.

VGSLX vs. AIGYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Real Estate Index Fund Admiral Shares (VGSLX) and abrdn Realty Income & Growth Fund (AIGYX). 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.

	VGSLX	AIGYX	Difference
Sharpe ratio: Return per unit of total volatility	0.86	1.55	-0.70
Sortino ratio: Return per unit of downside risk	1.25	2.11	-0.86
Omega ratio: Gain probability vs. loss probability	1.16	1.27	-0.12
Calmar ratio: Return relative to maximum drawdown	1.42	2.75	-1.33
Martin ratio: Return relative to average drawdown	4.43	9.29	-4.86

VGSLX vs. AIGYX - Sharpe Ratio Comparison

The current VGSLX Sharpe Ratio is 0.86, which is lower than the AIGYX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of VGSLX and AIGYX, 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

VGSLX vs. AIGYX - Drawdown Comparison

The maximum VGSLX drawdown since its inception was -73.05%, smaller than the maximum AIGYX drawdown of -79.94%. Use the drawdown chart below to compare losses from any high point for VGSLX and AIGYX.

Drawdown Indicators

	VGSLX	AIGYX	Difference
Max Drawdown Largest peak-to-trough decline	-73.05%	-79.94%	+6.89%
Max Drawdown (1Y) Largest decline over 1 year	-8.33%	-7.71%	-0.62%
Max Drawdown (3Y) Largest decline over 3 years	-17.41%	-18.26%	+0.85%
Max Drawdown (5Y) Largest decline over 5 years	-34.41%	-31.20%	-3.21%
Max Drawdown (10Y) Largest decline over 10 years	-42.34%	-43.10%	+0.76%
Current Drawdown Current decline from peak	-1.99%	-0.69%	-1.30%
Average Drawdown Average peak-to-trough decline	-12.55%	-12.40%	-0.15%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.66%	2.28%	+0.38%

Volatility

VGSLX vs. AIGYX - Volatility Comparison

The current volatility for Vanguard Real Estate Index Fund Admiral Shares (VGSLX) is 5.05%, while abrdn Realty Income & Growth Fund (AIGYX) has a volatility of 5.40%. This indicates that VGSLX experiences smaller price fluctuations and is considered to be less risky than AIGYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VGSLX	AIGYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.05%	5.40%	-0.35%
Volatility (6M) Calculated over the trailing 6-month period	10.16%	10.40%	-0.24%
Volatility (1Y) Calculated over the trailing 1-year period	13.83%	13.68%	+0.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.92%	20.74%	-1.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.89%	21.99%	-1.10%

VGSLX vs. AIGYX - Expense Ratio Comparison

VGSLX has a 0.13% expense ratio, which is lower than AIGYX's 1.01% expense ratio.

Dividends

VGSLX vs. AIGYX - Dividend Comparison

VGSLX's dividend yield for the trailing twelve months is around 3.61%, less than AIGYX's 6.89% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AIGYX abrdn Realty Income & Growth Fund	6.89%	8.43%	12.69%	4.01%	8.97%	27.57%	16.28%	18.30%	49.34%	5.85%	5.48%	4.69%
VGSLX Vanguard Real Estate Index Fund Admiral Shares	3.61%	3.92%	3.85%	3.91%	3.91%	2.56%	3.92%	3.39%	4.73%	4.23%	4.82%	3.92%

Frequently Asked Questions

Can I hold both VGSLX and AIGYX in my portfolio?

With a correlation of 0.92, VGSLX and AIGYX 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, VGSLX or AIGYX?

AIGYX has higher volatility (5.40%) compared to VGSLX (5.05%). In terms of maximum drawdown, VGSLX dropped -73.05% vs AIGYX's -79.94%.

Which has better risk-adjusted returns?

AIGYX currently has the higher Sharpe Ratio (1.55 vs 0.86), 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.