IVCSX vs. BOSOX

Last updated Jun 4, 2026

IVCSX (Voya Small Company Portfolio) and BOSOX (Boston Trust Small Cap Fund) are both Small Cap Blend Equities funds. Over the past 10 years, IVCSX returned 8.98%/yr vs 10.23%/yr for BOSOX. Their correlation of 0.94 suggests significant overlap in exposure. IVCSX charges 0.90%/yr vs 1.00%/yr for BOSOX.

Performance

IVCSX vs. BOSOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya Small Company Portfolio (IVCSX) and Boston Trust Small Cap Fund (BOSOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IVCSX achieves a 12.87% return, which is significantly higher than BOSOX's 6.63% return. Over the past 10 years, IVCSX has underperformed BOSOX with an annualized return of 8.98%, while BOSOX has yielded a comparatively higher 10.23% annualized return.

IVCSX

• 1D: 0.78%
• 1M: 4.55%
• YTD: 12.87%
• 6M: 12.11%
• 1Y: 27.74%
• 3Y*: 15.26%
• 5Y*: 5.92%
• 10Y*: 8.98%

BOSOX

• 1D: 0.80%
• 1M: 2.85%
• YTD: 6.63%
• 6M: 4.71%
• 1Y: 6.71%
• 3Y*: 7.74%
• 5Y*: 4.92%
• 10Y*: 10.23%

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

IVCSX vs. BOSOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IVCSX Voya Small Company Portfolio	12.87%	8.94%	10.56%	18.00%	-16.42%	14.74%	12.14%	25.57%	-15.83%	11.37%
BOSOX Boston Trust Small Cap Fund	6.63%	-4.04%	12.52%	10.09%	-9.05%	28.10%	8.27%	38.35%	-6.01%	12.24%

Correlation

The correlation between IVCSX and BOSOX is 0.75, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.84
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Dec 20, 2005	0.94

The correlation between IVCSX and BOSOX shifts across timeframes, from 0.75 (1 year) to 0.94 (all time), reflecting how their relationship changes across market environments.

Return for Risk

IVCSX vs. BOSOX — Risk / Return Rank

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

IVCSX

IVCSX Risk / Return Rank: 40
IVCSX Sharpe Ratio Rank: 39
IVCSX Sortino Ratio Rank: 38
IVCSX Omega Ratio Rank: 33
IVCSX Calmar Ratio Rank: 47
IVCSX Martin Ratio Rank: 43

BOSOX

BOSOX Risk / Return Rank: 7
BOSOX Sharpe Ratio Rank: 6
BOSOX Sortino Ratio Rank: 7
BOSOX Omega Ratio Rank: 6
BOSOX Calmar Ratio Rank: 7
BOSOX Martin Ratio Rank: 7

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.

IVCSX vs. BOSOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Small Company Portfolio (IVCSX) and Boston Trust Small Cap Fund (BOSOX). 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.

	IVCSX	BOSOX	Difference
Sharpe ratio Return per unit of total volatility	1.81	0.53	+1.29
Sortino ratio Return per unit of downside risk	2.57	0.89	+1.68
Omega ratio Gain probability vs. loss probability	1.30	1.10	+0.20
Calmar ratio Return relative to maximum drawdown	2.60	0.74	+1.86
Martin ratio Return relative to average drawdown	9.12	2.22	+6.90
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IVCSX vs. BOSOX - Sharpe Ratio Comparison

The current IVCSX Sharpe Ratio is 1.81, which is higher than the BOSOX Sharpe Ratio of 0.53. The chart below compares the historical Sharpe Ratios of IVCSX and BOSOX, 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

	IVCSX	BOSOX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.81	0.53	+1.29
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.28	-0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.39	0.53	-0.13
Sharpe Ratio (All Time) Calculated using the full available price history	0.42	0.43	-0.01

Drawdowns

IVCSX vs. BOSOX - Drawdown Comparison

The maximum IVCSX drawdown since its inception was -54.59%, which is greater than BOSOX's maximum drawdown of -51.32%. Use the drawdown chart below to compare losses from any high point for IVCSX and BOSOX.

Drawdown Indicators

	IVCSX	BOSOX	Difference
Max Drawdown Largest peak-to-trough decline	-54.59%	-51.32%	-3.27%
Max Drawdown (1Y) Largest decline over 1 year	-12.52%	-10.69%	-1.83%
Max Drawdown (3Y) Largest decline over 3 years	-24.45%	-22.36%	-2.09%
Max Drawdown (5Y) Largest decline over 5 years	-28.47%	-22.36%	-6.11%
Max Drawdown (10Y) Largest decline over 10 years	-43.15%	-36.79%	-6.36%
Current Drawdown Current decline from peak	0.00%	-6.67%	+6.67%
Average Drawdown Average peak-to-trough decline	-11.37%	-7.27%	-4.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.49%	3.57%	-0.08%

Volatility

IVCSX vs. BOSOX - Volatility Comparison

Voya Small Company Portfolio (IVCSX) has a higher volatility of 4.85% compared to Boston Trust Small Cap Fund (BOSOX) at 3.90%. This indicates that IVCSX's price experiences larger fluctuations and is considered to be riskier than BOSOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IVCSX	BOSOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.85%	3.90%	+0.95%
Volatility (6M) Calculated over the trailing 6-month period	12.84%	10.08%	+2.76%
Volatility (1Y) Calculated over the trailing 1-year period	17.99%	15.10%	+2.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.54%	17.82%	+4.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.17%	19.56%	+3.61%

IVCSX vs. BOSOX - Expense Ratio Comparison

IVCSX has a 0.90% expense ratio, which is lower than BOSOX's 1.00% expense ratio.

Dividends

IVCSX vs. BOSOX - Dividend Comparison

IVCSX's dividend yield for the trailing twelve months is around 6.56%, more than BOSOX's 4.14% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOSOX Boston Trust Small Cap Fund	4.14%	4.41%	6.52%	0.78%	5.09%	8.93%	2.56%	12.46%	16.19%	9.13%	3.14%	18.92%
IVCSX Voya Small Company Portfolio	6.56%	15.99%	3.68%	0.41%	37.13%	0.52%	1.91%	15.01%	21.50%	11.07%	9.01%	17.60%

Frequently Asked Questions

Can I hold both IVCSX and BOSOX in my portfolio?

IVCSX and BOSOX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IVCSX or BOSOX?

IVCSX has higher volatility (4.85%) compared to BOSOX (3.90%). In terms of maximum drawdown, IVCSX dropped -54.59% vs BOSOX's -51.32%.

Which has better risk-adjusted returns?

IVCSX currently has the higher Sharpe Ratio (1.81 vs 0.53), 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.