QUASX vs. VSGIX

Last updated Jun 24, 2026

QUASX (AB Small Cap Growth Portfolio) and VSGIX (Vanguard Small-Cap Growth Index Fund Institutional Shares) are both Small Cap Growth Equities funds. Over the past 10 years, QUASX returned 15.65%/yr vs 12.21%/yr for VSGIX. With a 0.96 correlation, they move nearly in lockstep. QUASX charges 1.11%/yr vs 0.06%/yr for VSGIX.

Performance

QUASX vs. VSGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Small Cap Growth Portfolio (QUASX) and Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, QUASX achieves a 25.68% return, which is significantly higher than VSGIX's 18.75% return. Over the past 10 years, QUASX has outperformed VSGIX with an annualized return of 15.65%, while VSGIX has yielded a comparatively lower 12.21% annualized return.

QUASX

• 1D: 2.19%
• 1M: 6.60%
• YTD: 25.68%
• 6M: 21.57%
• 1Y: 38.11%
• 3Y*: 18.07%
• 5Y*: 3.18%
• 10Y*: 15.65%

VSGIX

• 1D: 0.31%
• 1M: 3.11%
• YTD: 18.75%
• 6M: 15.73%
• 1Y: 32.50%
• 3Y*: 18.22%
• 5Y*: 5.13%
• 10Y*: 12.21%

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

QUASX vs. VSGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
QUASX AB Small Cap Growth Portfolio	25.68%	4.85%	18.49%	17.83%	-39.09%	9.76%	53.85%	49.85%	-1.02%	34.71%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	18.75%	8.44%	14.95%	23.07%	-28.39%	5.70%	35.29%	32.77%	-5.70%	21.94%

Correlation

The correlation between QUASX and VSGIX is 0.93, 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	0.93
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	0.96
Correlation (All Time) Calculated using the full available price history since May 24, 2000	0.96

The correlation between QUASX and VSGIX has been stable across timeframes, ranging from 0.93 to 0.97 - a consistent structural relationship.

Return for Risk

QUASX vs. VSGIX — Risk / Return Rank

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

QUASX

QUASX Risk / Return Rank: 41
QUASX Sharpe Ratio Rank: 37
QUASX Sortino Ratio Rank: 34
QUASX Omega Ratio Rank: 32
QUASX Calmar Ratio Rank: 53
QUASX Martin Ratio Rank: 50

VSGIX

VSGIX Risk / Return Rank: 45
VSGIX Sharpe Ratio Rank: 38
VSGIX Sortino Ratio Rank: 35
VSGIX Omega Ratio Rank: 32
VSGIX Calmar Ratio Rank: 64
VSGIX Martin Ratio Rank: 58

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.

QUASX vs. VSGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Small Cap Growth Portfolio (QUASX) and Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX). 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.

	QUASX	VSGIX	Difference
Sharpe ratio: Return per unit of total volatility	1.63	1.65	-0.02
Sortino ratio: Return per unit of downside risk	2.23	2.29	-0.06
Omega ratio: Gain probability vs. loss probability	1.27	1.28	-0.01
Calmar ratio: Return relative to maximum drawdown	2.67	2.94	-0.28
Martin ratio: Return relative to average drawdown	9.78	11.01	-1.23

QUASX vs. VSGIX - Sharpe Ratio Comparison

The current QUASX Sharpe Ratio is 1.63, which is comparable to the VSGIX Sharpe Ratio of 1.65. The chart below compares the historical Sharpe Ratios of QUASX and VSGIX, 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

QUASX vs. VSGIX - Drawdown Comparison

The maximum QUASX drawdown since its inception was -60.97%, roughly equal to the maximum VSGIX drawdown of -58.66%. Use the drawdown chart below to compare losses from any high point for QUASX and VSGIX.

Drawdown Indicators

	QUASX	VSGIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.97%	-58.66%	-2.31%
Max Drawdown (1Y) Largest decline over 1 year	-15.02%	-11.38%	-3.64%
Max Drawdown (3Y) Largest decline over 3 years	-31.68%	-27.47%	-4.21%
Max Drawdown (5Y) Largest decline over 5 years	-47.37%	-38.36%	-9.01%
Max Drawdown (10Y) Largest decline over 10 years	-47.37%	-38.70%	-8.67%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-15.73%	-11.32%	-4.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.09%	3.04%	+1.05%

Volatility

QUASX vs. VSGIX - Volatility Comparison

AB Small Cap Growth Portfolio (QUASX) has a higher volatility of 8.06% compared to Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) at 6.94%. This indicates that QUASX's price experiences larger fluctuations and is considered to be riskier than VSGIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	QUASX	VSGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.06%	6.94%	+1.12%
Volatility (6M) Calculated over the trailing 6-month period	19.34%	15.80%	+3.54%
Volatility (1Y) Calculated over the trailing 1-year period	24.64%	20.32%	+4.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.51%	23.70%	+2.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.63%	23.06%	+2.57%

QUASX vs. VSGIX - Expense Ratio Comparison

QUASX has a 1.11% expense ratio, which is higher than VSGIX's 0.06% expense ratio.

Dividends

QUASX vs. VSGIX - Dividend Comparison

QUASX has not paid dividends to shareholders, while VSGIX's dividend yield for the trailing twelve months is around 0.45%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
QUASX AB Small Cap Growth Portfolio	0.00%	0.00%	0.00%	0.00%	0.00%	9.07%	9.86%	18.20%	19.70%	9.29%	2.32%	9.19%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	0.45%	0.55%	0.55%	0.68%	0.56%	0.37%	0.45%	0.58%	0.80%	0.82%	1.09%	0.98%

Frequently Asked Questions

Can I hold both QUASX and VSGIX in my portfolio?

With a correlation of 0.93, QUASX and VSGIX 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, QUASX or VSGIX?

QUASX has higher volatility (8.06%) compared to VSGIX (6.94%). In terms of maximum drawdown, QUASX dropped -60.97% vs VSGIX's -58.66%.

Which has better risk-adjusted returns?

VSGIX currently has the higher Sharpe Ratio (1.65 vs 1.63), 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.