GTSAX vs. VSGIX

Last updated Jun 25, 2026

GTSAX (Invesco Small Cap Growth Fund) and VSGIX (Vanguard Small-Cap Growth Index Fund Institutional Shares) are both Small Cap Growth Equities funds. Over the past 10 years, GTSAX returned 11.35%/yr vs 12.03%/yr for VSGIX. With a 0.97 correlation, they move nearly in lockstep. GTSAX charges 1.14%/yr vs 0.06%/yr for VSGIX.

Performance

GTSAX vs. VSGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Small Cap Growth Fund (GTSAX) 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, GTSAX achieves a 25.26% return, which is significantly higher than VSGIX's 16.88% return. Over the past 10 years, GTSAX has underperformed VSGIX with an annualized return of 11.35%, while VSGIX has yielded a comparatively higher 12.03% annualized return.

GTSAX

• 1D: -3.20%
• 1M: 4.58%
• YTD: 25.26%
• 6M: 22.06%
• 1Y: 37.60%
• 3Y*: 17.92%
• 5Y*: 1.73%
• 10Y*: 11.35%

VSGIX

• 1D: -1.58%
• 1M: 1.48%
• YTD: 16.88%
• 6M: 13.79%
• 1Y: 28.63%
• 3Y*: 17.59%
• 5Y*: 4.62%
• 10Y*: 12.03%

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

GTSAX vs. VSGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GTSAX Invesco Small Cap Growth Fund	25.26%	5.80%	16.19%	12.66%	-35.61%	5.71%	57.23%	24.30%	-9.16%	24.94%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	16.88%	8.44%	14.95%	23.07%	-28.39%	5.70%	35.29%	32.77%	-5.70%	21.94%

Correlation

The correlation between GTSAX and VSGIX is 0.91, 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	0.91
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	0.97
Correlation (All Time) Calculated using the full available price history since May 24, 2000	0.97

The correlation between GTSAX and VSGIX has been stable across timeframes, ranging from 0.91 to 0.97 - a consistent structural relationship.

Return for Risk

GTSAX vs. VSGIX — Risk / Return Rank

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

GTSAX

GTSAX Risk / Return Rank: 47
GTSAX Sharpe Ratio Rank: 39
GTSAX Sortino Ratio Rank: 35
GTSAX Omega Ratio Rank: 35
GTSAX Calmar Ratio Rank: 70
GTSAX Martin Ratio Rank: 59

VSGIX

VSGIX Risk / Return Rank: 40
VSGIX Sharpe Ratio Rank: 32
VSGIX Sortino Ratio Rank: 31
VSGIX Omega Ratio Rank: 29
VSGIX Calmar Ratio Rank: 55
VSGIX Martin Ratio Rank: 53

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.

GTSAX vs. VSGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Small Cap Growth Fund (GTSAX) 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.

	GTSAX	VSGIX	Difference
Sharpe ratio: Return per unit of total volatility	1.60	1.50	+0.10
Sortino ratio: Return per unit of downside risk	2.17	2.11	+0.06
Omega ratio: Gain probability vs. loss probability	1.28	1.26	+0.02
Calmar ratio: Return relative to maximum drawdown	2.96	2.68	+0.27
Martin ratio: Return relative to average drawdown	10.64	10.04	+0.61

GTSAX vs. VSGIX - Sharpe Ratio Comparison

The current GTSAX Sharpe Ratio is 1.60, which is comparable to the VSGIX Sharpe Ratio of 1.50. The chart below compares the historical Sharpe Ratios of GTSAX 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

GTSAX vs. VSGIX - Drawdown Comparison

The maximum GTSAX drawdown since its inception was -63.62%, which is greater than VSGIX's maximum drawdown of -58.66%. Use the drawdown chart below to compare losses from any high point for GTSAX and VSGIX.

Drawdown Indicators

	GTSAX	VSGIX	Difference
Max Drawdown Largest peak-to-trough decline	-63.62%	-58.66%	-4.96%
Max Drawdown (1Y) Largest decline over 1 year	-13.42%	-11.38%	-2.04%
Max Drawdown (3Y) Largest decline over 3 years	-29.24%	-27.47%	-1.77%
Max Drawdown (5Y) Largest decline over 5 years	-47.85%	-38.36%	-9.49%
Max Drawdown (10Y) Largest decline over 10 years	-47.85%	-38.70%	-9.15%
Current Drawdown Current decline from peak	-3.20%	-1.58%	-1.62%
Average Drawdown Average peak-to-trough decline	-18.91%	-11.31%	-7.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.71%	3.04%	+0.67%

Volatility

GTSAX vs. VSGIX - Volatility Comparison

Invesco Small Cap Growth Fund (GTSAX) has a higher volatility of 10.22% compared to Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) at 7.13%. This indicates that GTSAX'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

	GTSAX	VSGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.22%	7.13%	+3.09%
Volatility (6M) Calculated over the trailing 6-month period	20.22%	15.88%	+4.34%
Volatility (1Y) Calculated over the trailing 1-year period	24.77%	20.35%	+4.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.87%	23.71%	+1.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.33%	23.03%	+1.30%

GTSAX vs. VSGIX - Expense Ratio Comparison

GTSAX has a 1.14% expense ratio, which is higher than VSGIX's 0.06% expense ratio.

Dividends

GTSAX vs. VSGIX - Dividend Comparison

GTSAX's dividend yield for the trailing twelve months is around 8.34%, more than VSGIX's 0.46% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GTSAX Invesco Small Cap Growth Fund	8.34%	10.45%	0.00%	0.00%	3.60%	38.91%	13.85%	8.96%	9.76%	9.23%	9.35%	10.11%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	0.46%	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 GTSAX and VSGIX in my portfolio?

With a correlation of 0.91, GTSAX 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, GTSAX or VSGIX?

GTSAX has higher volatility (10.22%) compared to VSGIX (7.13%). In terms of maximum drawdown, GTSAX dropped -63.62% vs VSGIX's -58.66%.

Which has better risk-adjusted returns?

GTSAX currently has the higher Sharpe Ratio (1.60 vs 1.50), 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.