ACINX vs. VFSNX

Last updated Jun 4, 2026

ACINX (Columbia Acorn International Fund) and VFSNX (Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares) are both Foreign Small & Mid Cap Equities funds. Over the past 10 years, ACINX returned 4.52%/yr vs 8.21%/yr for VFSNX. Their correlation of 0.93 suggests significant overlap in exposure. ACINX charges 0.97%/yr vs 0.11%/yr for VFSNX.

Performance

ACINX vs. VFSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Acorn International Fund (ACINX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares (VFSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACINX achieves a 7.64% return, which is significantly lower than VFSNX's 11.76% return. Over the past 10 years, ACINX has underperformed VFSNX with an annualized return of 4.52%, while VFSNX has yielded a comparatively higher 8.21% annualized return.

ACINX

• 1D: -0.04%
• 1M: 3.85%
• YTD: 7.64%
• 6M: 8.83%
• 1Y: 7.97%
• 3Y*: 6.20%
• 5Y*: -1.07%
• 10Y*: 4.52%

VFSNX

• 1D: 0.05%
• 1M: 1.81%
• YTD: 11.76%
• 6M: 14.55%
• 1Y: 28.61%
• 3Y*: 17.18%
• 5Y*: 6.19%
• 10Y*: 8.21%

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

ACINX vs. VFSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACINX Columbia Acorn International Fund	7.64%	12.52%	-6.57%	19.57%	-33.64%	12.92%	15.15%	29.84%	-18.35%	31.20%
VFSNX Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares	11.76%	29.97%	2.63%	15.18%	-21.26%	12.74%	11.92%	21.72%	-18.46%	30.30%

Correlation

The correlation between ACINX and VFSNX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.90
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Mar 23, 2009	0.93

The correlation between ACINX and VFSNX has been stable across timeframes, ranging from 0.89 to 0.93 - a consistent structural relationship.

Return for Risk

ACINX vs. VFSNX — Risk / Return Rank

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

ACINX

ACINX Risk / Return Rank: 5
ACINX Sharpe Ratio Rank: 5
ACINX Sortino Ratio Rank: 5
ACINX Omega Ratio Rank: 5
ACINX Calmar Ratio Rank: 5
ACINX Martin Ratio Rank: 6

VFSNX

VFSNX Risk / Return Rank: 47
VFSNX Sharpe Ratio Rank: 51
VFSNX Sortino Ratio Rank: 47
VFSNX Omega Ratio Rank: 50
VFSNX Calmar Ratio Rank: 42
VFSNX Martin Ratio Rank: 45

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.

ACINX vs. VFSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Acorn International Fund (ACINX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares (VFSNX). 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.

	ACINX	VFSNX	Difference
Sharpe ratio: Return per unit of total volatility	0.40	2.11	-1.71
Sortino ratio: Return per unit of downside risk	0.70	2.89	-2.19
Omega ratio: Gain probability vs. loss probability	1.08	1.39	-0.30
Calmar ratio: Return relative to maximum drawdown	0.49	2.46	-1.97
Martin ratio: Return relative to average drawdown	1.57	9.47	-7.89
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ACINX vs. VFSNX - Sharpe Ratio Comparison

The current ACINX Sharpe Ratio is 0.40, which is lower than the VFSNX Sharpe Ratio of 2.11. The chart below compares the historical Sharpe Ratios of ACINX and VFSNX, 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

	ACINX	VFSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.40	2.11	-1.71
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.06	0.41	-0.47
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.25	0.52	-0.27
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	0.59	-0.06

Drawdowns

ACINX vs. VFSNX - Drawdown Comparison

The maximum ACINX drawdown since its inception was -60.92%, which is greater than VFSNX's maximum drawdown of -43.65%. Use the drawdown chart below to compare losses from any high point for ACINX and VFSNX.

Drawdown Indicators

	ACINX	VFSNX	Difference
Max Drawdown Largest peak-to-trough decline	-60.92%	-43.65%	-17.27%
Max Drawdown (1Y) Largest decline over 1 year	-14.23%	-11.47%	-2.76%
Max Drawdown (3Y) Largest decline over 3 years	-22.22%	-14.70%	-7.52%
Max Drawdown (5Y) Largest decline over 5 years	-46.12%	-33.75%	-12.37%
Max Drawdown (10Y) Largest decline over 10 years	-46.12%	-43.65%	-2.47%
Current Drawdown Current decline from peak	-13.70%	-1.09%	-12.61%
Average Drawdown Average peak-to-trough decline	-15.71%	-9.49%	-6.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.43%	2.98%	+1.45%

Volatility

ACINX vs. VFSNX - Volatility Comparison

Columbia Acorn International Fund (ACINX) has a higher volatility of 5.00% compared to Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares (VFSNX) at 4.30%. This indicates that ACINX's price experiences larger fluctuations and is considered to be riskier than VFSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACINX	VFSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.00%	4.30%	+0.70%
Volatility (6M) Calculated over the trailing 6-month period	14.42%	11.19%	+3.23%
Volatility (1Y) Calculated over the trailing 1-year period	17.47%	13.40%	+4.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.12%	15.03%	+4.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.34%	15.76%	+2.58%

ACINX vs. VFSNX - Expense Ratio Comparison

ACINX has a 0.97% expense ratio, which is higher than VFSNX's 0.11% expense ratio.

Dividends

ACINX vs. VFSNX - Dividend Comparison

ACINX's dividend yield for the trailing twelve months is around 5.50%, more than VFSNX's 3.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACINX Columbia Acorn International Fund	5.50%	5.92%	10.97%	0.00%	3.12%	16.16%	12.94%	11.09%	29.07%	6.17%	1.33%	5.34%
VFSNX Vanguard FTSE All-World ex-US Small-Cap Index Fund Institutional Shares	3.01%	3.36%	3.41%	3.11%	2.26%	2.70%	1.90%	3.25%	2.81%	2.85%	2.93%	2.69%

Frequently Asked Questions

Can I hold both ACINX and VFSNX in my portfolio?

ACINX and VFSNX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACINX or VFSNX?

ACINX has higher volatility (5.00%) compared to VFSNX (4.30%). In terms of maximum drawdown, ACINX dropped -60.92% vs VFSNX's -43.65%.

Which has better risk-adjusted returns?

VFSNX currently has the higher Sharpe Ratio (2.11 vs 0.40), 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.