SAOPX vs. VSTSX

Last updated Jun 3, 2026

SAOPX (Barrett Opportunity Fund) and VSTSX (Vanguard Total Stock Market Index Fund Institutional Select Shares) are both Large Cap Blend Equities funds. Over the past 5 years, SAOPX returned 13.13%/yr vs 12.91%/yr for VSTSX. Their correlation of 0.88 suggests significant overlap in exposure. SAOPX charges 1.18%/yr vs 0.01%/yr for VSTSX.

Performance

SAOPX vs. VSTSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Barrett Opportunity Fund (SAOPX) and Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SAOPX achieves a 7.76% return, which is significantly lower than VSTSX's 11.72% return.

SAOPX

• 1D: 0.38%
• 1M: 0.53%
• YTD: 7.76%
• 6M: 8.50%
• 1Y: 30.62%
• 3Y*: 18.73%
• 5Y*: 13.13%
• 10Y*: 12.09%

VSTSX

• 1D: 0.25%
• 1M: 5.10%
• YTD: 11.72%
• 6M: 12.09%
• 1Y: 29.69%
• 3Y*: 22.28%
• 5Y*: 12.91%
• 10Y*: —

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

SAOPX vs. VSTSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SAOPX Barrett Opportunity Fund	7.76%	12.76%	20.81%	17.85%	-6.39%	31.64%	1.23%	19.96%	-9.47%	19.86%
VSTSX Vanguard Total Stock Market Index Fund Institutional Select Shares	11.72%	17.16%	23.27%	26.54%	-19.49%	25.75%	21.02%	30.81%	-5.15%	20.21%

Correlation

The correlation between SAOPX and VSTSX is 0.72, 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	0.72
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.88

The correlation between SAOPX and VSTSX shifts across timeframes, from 0.72 (1 year) to 0.88 (all time), reflecting how their relationship changes across market environments.

Return for Risk

SAOPX vs. VSTSX — Risk / Return Rank

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

SAOPX

SAOPX Risk / Return Rank: 73
SAOPX Sharpe Ratio Rank: 80
SAOPX Sortino Ratio Rank: 73
SAOPX Omega Ratio Rank: 71
SAOPX Calmar Ratio Rank: 84
SAOPX Martin Ratio Rank: 56

VSTSX

VSTSX Risk / Return Rank: 72
VSTSX Sharpe Ratio Rank: 73
VSTSX Sortino Ratio Rank: 65
VSTSX Omega Ratio Rank: 64
VSTSX Calmar Ratio Rank: 74
VSTSX Martin Ratio Rank: 83

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.

SAOPX vs. VSTSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Barrett Opportunity Fund (SAOPX) and Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX). 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.

	SAOPX	VSTSX	Difference
Sharpe ratio Return per unit of total volatility	2.61	2.49	+0.13
Sortino ratio Return per unit of downside risk	3.58	3.39	+0.19
Omega ratio Gain probability vs. loss probability	1.47	1.45	+0.03
Calmar ratio Return relative to maximum drawdown	3.99	3.39	+0.61
Martin ratio Return relative to average drawdown	11.25	15.66	-4.40
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SAOPX vs. VSTSX - Sharpe Ratio Comparison

The current SAOPX Sharpe Ratio is 2.61, which is comparable to the VSTSX Sharpe Ratio of 2.49. The chart below compares the historical Sharpe Ratios of SAOPX and VSTSX, 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

	SAOPX	VSTSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.61	2.49	+0.13
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.35	0.75	-0.40
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.41	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.80	-0.43

Drawdowns

SAOPX vs. VSTSX - Drawdown Comparison

The maximum SAOPX drawdown since its inception was -65.75%, which is greater than VSTSX's maximum drawdown of -34.97%. Use the drawdown chart below to compare losses from any high point for SAOPX and VSTSX.

Drawdown Indicators

	SAOPX	VSTSX	Difference
Max Drawdown Largest peak-to-trough decline	-65.75%	-34.97%	-30.78%
Max Drawdown (1Y) Largest decline over 1 year	-7.64%	-8.92%	+1.28%
Max Drawdown (3Y) Largest decline over 3 years	-52.45%	-19.36%	-33.09%
Max Drawdown (5Y) Largest decline over 5 years	-52.45%	-25.35%	-27.10%
Max Drawdown (10Y) Largest decline over 10 years	-52.45%	—	—
Current Drawdown Current decline from peak	-28.99%	0.00%	-28.99%
Average Drawdown Average peak-to-trough decline	-12.43%	-4.90%	-7.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.71%	1.93%	+0.78%

Volatility

SAOPX vs. VSTSX - Volatility Comparison

The current volatility for Barrett Opportunity Fund (SAOPX) is 2.18%, while Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX) has a volatility of 2.95%. This indicates that SAOPX experiences smaller price fluctuations and is considered to be less risky than VSTSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SAOPX	VSTSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.18%	2.95%	-0.77%
Volatility (6M) Calculated over the trailing 6-month period	8.59%	9.20%	-0.61%
Volatility (1Y) Calculated over the trailing 1-year period	11.82%	12.21%	-0.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	37.69%	17.36%	+20.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	29.85%	18.76%	+11.09%

SAOPX vs. VSTSX - Expense Ratio Comparison

SAOPX has a 1.18% expense ratio, which is higher than VSTSX's 0.01% expense ratio.

Dividends

SAOPX vs. VSTSX - Dividend Comparison

SAOPX's dividend yield for the trailing twelve months is around 40.61%, more than VSTSX's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SAOPX Barrett Opportunity Fund	40.61%	43.76%	68.76%	28.25%	13.34%	12.53%	6.24%	10.08%	15.51%	6.06%	26.77%	11.55%
VSTSX Vanguard Total Stock Market Index Fund Institutional Select Shares	1.03%	1.13%	1.27%	1.43%	1.67%	1.23%	1.44%	1.79%	2.07%	1.74%	0.00%	0.00%

Frequently Asked Questions

Can I hold both SAOPX and VSTSX in my portfolio?

SAOPX and VSTSX have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SAOPX or VSTSX?

VSTSX has higher volatility (2.95%) compared to SAOPX (2.18%). In terms of maximum drawdown, SAOPX dropped -65.75% vs VSTSX's -34.97%.

Which has better risk-adjusted returns?

SAOPX currently has the higher Sharpe Ratio (2.61 vs 2.49), 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.