ISCGX vs. VSGIX

Last updated Jun 4, 2026

ISCGX (Transamerica Small Cap Growth) and VSGIX (Vanguard Small-Cap Growth Index Fund Institutional Shares) are both Small Cap Growth Equities funds. Over the past 10 years, ISCGX returned 8.81%/yr vs 11.86%/yr for VSGIX. Their correlation of 0.94 suggests significant overlap in exposure. ISCGX charges 1.06%/yr vs 0.06%/yr for VSGIX.

Performance

ISCGX vs. VSGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Transamerica Small Cap Growth (ISCGX) 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, ISCGX achieves a 10.04% return, which is significantly lower than VSGIX's 18.74% return. Over the past 10 years, ISCGX has underperformed VSGIX with an annualized return of 8.81%, while VSGIX has yielded a comparatively higher 11.86% annualized return.

ISCGX

• 1D: 1.27%
• 1M: 6.48%
• YTD: 10.04%
• 6M: 6.99%
• 1Y: 12.82%
• 3Y*: 7.10%
• 5Y*: 0.87%
• 10Y*: 8.81%

VSGIX

• 1D: 0.72%
• 1M: 6.06%
• YTD: 18.74%
• 6M: 18.16%
• 1Y: 34.12%
• 3Y*: 18.14%
• 5Y*: 6.12%
• 10Y*: 11.86%

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

ISCGX vs. VSGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ISCGX Transamerica Small Cap Growth	10.04%	-3.41%	6.12%	20.01%	-30.85%	18.23%	32.20%	29.47%	-7.71%	15.56%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	18.74%	8.44%	14.95%	23.07%	-28.39%	5.70%	35.29%	32.77%	-5.70%	21.94%

Correlation

The correlation between ISCGX 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	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Jan 3, 2013	0.94

The correlation between ISCGX and VSGIX has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

Return for Risk

ISCGX vs. VSGIX — Risk / Return Rank

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

ISCGX

ISCGX Risk / Return Rank: 10
ISCGX Sharpe Ratio Rank: 10
ISCGX Sortino Ratio Rank: 11
ISCGX Omega Ratio Rank: 9
ISCGX Calmar Ratio Rank: 10
ISCGX Martin Ratio Rank: 12

VSGIX

VSGIX Risk / Return Rank: 48
VSGIX Sharpe Ratio Rank: 41
VSGIX Sortino Ratio Rank: 38
VSGIX Omega Ratio Rank: 35
VSGIX Calmar Ratio Rank: 68
VSGIX Martin Ratio Rank: 61

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.

ISCGX vs. VSGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Transamerica Small Cap Growth (ISCGX) 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.

	ISCGX	VSGIX	Difference
Sharpe ratio: Return per unit of total volatility	0.79	1.86	-1.07
Sortino ratio: Return per unit of downside risk	1.27	2.56	-1.29
Omega ratio: Gain probability vs. loss probability	1.14	1.31	-0.17
Calmar ratio: Return relative to maximum drawdown	0.99	3.17	-2.18
Martin ratio: Return relative to average drawdown	3.43	12.10	-8.67
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ISCGX vs. VSGIX - Sharpe Ratio Comparison

The current ISCGX Sharpe Ratio is 0.79, which is lower than the VSGIX Sharpe Ratio of 1.86. The chart below compares the historical Sharpe Ratios of ISCGX 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.

Sharpe Ratios by Period

	ISCGX	VSGIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.79	1.86	-1.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.04	0.26	-0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.38	0.52	-0.13
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.41	+0.05

Drawdowns

ISCGX vs. VSGIX - Drawdown Comparison

The maximum ISCGX drawdown since its inception was -39.22%, smaller than the maximum VSGIX drawdown of -58.66%. Use the drawdown chart below to compare losses from any high point for ISCGX and VSGIX.

Drawdown Indicators

	ISCGX	VSGIX	Difference
Max Drawdown Largest peak-to-trough decline	-39.22%	-58.66%	+19.44%
Max Drawdown (1Y) Largest decline over 1 year	-14.78%	-11.38%	-3.40%
Max Drawdown (3Y) Largest decline over 3 years	-26.12%	-27.47%	+1.35%
Max Drawdown (5Y) Largest decline over 5 years	-39.22%	-38.36%	-0.86%
Max Drawdown (10Y) Largest decline over 10 years	-39.22%	-38.70%	-0.52%
Current Drawdown Current decline from peak	-13.85%	0.00%	-13.85%
Average Drawdown Average peak-to-trough decline	-11.21%	-11.34%	+0.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.28%	2.98%	+1.30%

Volatility

ISCGX vs. VSGIX - Volatility Comparison

Transamerica Small Cap Growth (ISCGX) has a higher volatility of 6.02% compared to Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) at 5.28%. This indicates that ISCGX'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

	ISCGX	VSGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.02%	5.28%	+0.74%
Volatility (6M) Calculated over the trailing 6-month period	14.46%	14.85%	-0.39%
Volatility (1Y) Calculated over the trailing 1-year period	18.72%	19.45%	-0.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.35%	23.56%	-0.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.99%	22.98%	+0.01%

ISCGX vs. VSGIX - Expense Ratio Comparison

ISCGX has a 1.06% expense ratio, which is higher than VSGIX's 0.06% expense ratio.

Dividends

ISCGX vs. VSGIX - Dividend Comparison

ISCGX's dividend yield for the trailing twelve months is around 14.06%, more than VSGIX's 0.45% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ISCGX Transamerica Small Cap Growth	14.06%	15.47%	12.92%	4.61%	4.29%	11.50%	8.30%	6.94%	11.71%	10.40%	121.18%	9.14%
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 ISCGX and VSGIX in my portfolio?

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

ISCGX has higher volatility (6.02%) compared to VSGIX (5.28%). In terms of maximum drawdown, ISCGX dropped -39.22% vs VSGIX's -58.66%.

Which has better risk-adjusted returns?

VSGIX currently has the higher Sharpe Ratio (1.86 vs 0.79), 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.