ZVNBX vs. MRFOX

Last updated Aug 1, 2026

ZVNBX (Zevenbergen Growth Fund) and MRFOX (Marshfield Concentrated Opportunity Fund) are both Large Cap Growth Equities funds. Their 0.50 correlation means they have sometimes moved together and sometimes differently. ZVNBX charges 1.30%/yr vs 1.05%/yr for MRFOX.

Performance

ZVNBX vs. MRFOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Zevenbergen Growth Fund (ZVNBX) and Marshfield Concentrated Opportunity Fund (MRFOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

ZVNBX

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

MRFOX

• 1D: -1.24%
• 1M: -0.50%
• 6M: 3.84%
• YTD: 4.87%
• 1Y: 11.84%
• 3Y*: 13.29%
• 5Y*: 11.49%
• 10Y*: 15.92%
• ALL TIME*: 15.58%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
MRFOX Marshfield Concentrated Opportunity Fund	$0.00	$0.00	$0.00

ZVNBX vs. MRFOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ZVNBX Zevenbergen Growth Fund	-0.07%	9.93%	34.10%	63.92%	-54.79%	-9.19%	123.87%	37.73%	5.88%	33.71%
MRFOX Marshfield Concentrated Opportunity Fund	4.87%	10.05%	17.10%	17.68%	5.06%	17.71%	15.19%	36.26%	1.89%	25.92%

Correlation

The correlation between ZVNBX and MRFOX is 0.18, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.18
Correlation (3Y) Balances recent behavior with more history.	0.35
Correlation (5Y) Shows whether the relationship held over a longer period.	0.47
Correlation (10Y) Provides a long-term view across more market conditions.	0.49
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.50

Over the past year, the correlation between ZVNBX and MRFOX has dropped to 0.18 - well below their long-term average of 0.50, suggesting their price drivers have been diverging.

Return for Risk

ZVNBX vs. MRFOX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ZVNBX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

MRFOX

MRFOX Risk / Return Rank: 35
MRFOX Sharpe Ratio Rank: 34
MRFOX Sortino Ratio Rank: 37
MRFOX Omega Ratio Rank: 32
MRFOX Calmar Ratio Rank: 38
MRFOX Martin Ratio Rank: 32

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ZVNBX vs. MRFOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Zevenbergen Growth Fund (ZVNBX) and Marshfield Concentrated Opportunity Fund (MRFOX). 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.

	ZVNBX	MRFOX	Difference
Sharpe ratio: Return per unit of total volatility	—	1.05	—
Sortino ratio: Return per unit of downside risk	—	1.62	—
Omega ratio: Gain probability vs. loss probability	—	1.19	—
Calmar ratio: Return relative to maximum drawdown	—	1.55	—
Martin ratio: Return relative to average drawdown	—	4.55	—

Drawdowns

Drawdown Indicators

	ZVNBX	MRFOX	Difference
Max Drawdown Largest peak-to-trough decline	—	-29.10%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-7.03%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-7.91%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-12.98%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-29.10%	—
Current Drawdown Current decline from peak	—	-1.37%	—
Average Drawdown Average peak-to-trough decline	—	-2.34%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	2.38%	—

Volatility

Volatility by Period

	ZVNBX	MRFOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	4.45%	—
Volatility (6M) Calculated over the trailing 6-month period	—	7.80%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	10.40%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	12.17%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	14.18%	—

ZVNBX vs. MRFOX - Expense Ratio Comparison

ZVNBX has a 1.30% expense ratio, which is higher than MRFOX's 1.05% expense ratio.

Dividends

ZVNBX vs. MRFOX - Dividend Comparison

ZVNBX's dividend yield for the trailing twelve months is around 1.27%, less than MRFOX's 1.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
MRFOX Marshfield Concentrated Opportunity Fund	1.54%	1.62%	4.59%	0.46%	0.35%	6.78%	2.68%	1.39%	1.94%	2.06%	0.60%
ZVNBX Zevenbergen Growth Fund	1.27%	1.26%	0.00%	0.00%	0.00%	1.95%	0.07%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ZVNBX and MRFOX in my portfolio?

ZVNBX and MRFOX have a correlation of 0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.