OIFIX vs. WMGAX

Last updated Jul 16, 2026

OIFIX (Optimum Fixed Income Fund) and WMGAX (Delaware Ivy Mid Cap Growth Fund) are both mutual funds - OIFIX is a Intermediate Core-Plus Bond fund managed by Delaware Funds, while WMGAX is a Mid Cap Growth Equities fund managed by Delaware Funds. Over the past 10 years, OIFIX returned 1.90%/yr vs 11.00%/yr for WMGAX. At a correlation of -0.05, they often move in opposite directions. OIFIX charges 0.80%/yr vs 1.12%/yr for WMGAX.

Performance

OIFIX vs. WMGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Optimum Fixed Income Fund (OIFIX) and Delaware Ivy Mid Cap Growth Fund (WMGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OIFIX achieves a -0.12% return, which is significantly lower than WMGAX's 1.49% return. Over the past 10 years, OIFIX has underperformed WMGAX with an annualized return of 1.90%, while WMGAX has yielded a comparatively higher 11.00% annualized return.

OIFIX

• 1D: 0.24%
• 1M: -0.60%
• 6M: -0.60%
• YTD: -0.12%
• 1Y: 4.51%
• 3Y*: 4.08%
• 5Y*: -0.33%
• 10Y*: 1.90%

WMGAX

• 1D: 0.35%
• 1M: -2.69%
• 6M: -2.19%
• YTD: 1.49%
• 1Y: -0.09%
• 3Y*: 3.89%
• 5Y*: -0.25%
• 10Y*: 11.00%

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

OIFIX vs. WMGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OIFIX Optimum Fixed Income Fund	-0.12%	7.64%	1.49%	5.90%	-13.96%	-1.78%	11.14%	8.63%	-0.70%	4.50%
WMGAX Delaware Ivy Mid Cap Growth Fund	1.49%	0.83%	10.02%	19.97%	-30.68%	16.22%	48.56%	38.01%	-0.20%	26.95%

Correlation

The correlation between OIFIX and WMGAX is 0.40, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.40
Correlation (3Y) Calculated over the trailing 3-year period	0.26
Correlation (5Y) Calculated over the trailing 5-year period	0.22
Correlation (10Y) Calculated over the trailing 10-year period	0.10
Correlation (All Time) Calculated using the full available price history since Jul 23, 2003	-0.05

The correlation between OIFIX and WMGAX shifts across timeframes, from -0.05 (all time) to 0.40 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

OIFIX vs. WMGAX — Risk / Return Rank

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

OIFIX

OIFIX Risk / Return Rank: 24
OIFIX Sharpe Ratio Rank: 25
OIFIX Sortino Ratio Rank: 26
OIFIX Omega Ratio Rank: 23
OIFIX Calmar Ratio Rank: 25
OIFIX Martin Ratio Rank: 22

WMGAX

WMGAX Risk / Return Rank: 3
WMGAX Sharpe Ratio Rank: 3
WMGAX Sortino Ratio Rank: 3
WMGAX Omega Ratio Rank: 3
WMGAX Calmar Ratio Rank: 3
WMGAX Martin Ratio Rank: 3

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.

OIFIX vs. WMGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Optimum Fixed Income Fund (OIFIX) and Delaware Ivy Mid Cap Growth Fund (WMGAX). 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.

	OIFIX	WMGAX	Difference
Sharpe ratio: Return per unit of total volatility	1.07	-0.06	+1.13
Sortino ratio: Return per unit of downside risk	1.60	0.04	+1.56
Omega ratio: Gain probability vs. loss probability	1.19	1.00	+0.18
Calmar ratio: Return relative to maximum drawdown	1.40	-0.07	+1.47
Martin ratio: Return relative to average drawdown	3.97	-0.18	+4.14

OIFIX vs. WMGAX - Sharpe Ratio Comparison

The current OIFIX Sharpe Ratio is 1.07, which is higher than the WMGAX Sharpe Ratio of -0.06. The chart below compares the historical Sharpe Ratios of OIFIX and WMGAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

OIFIX vs. WMGAX - Drawdown Comparison

The maximum OIFIX drawdown since its inception was -19.46%, smaller than the maximum WMGAX drawdown of -53.74%. Use the drawdown chart below to compare losses from any high point for OIFIX and WMGAX.

Drawdown Indicators

	OIFIX	WMGAX	Difference
Max Drawdown Largest peak-to-trough decline	-19.46%	-53.74%	+34.28%
Max Drawdown (1Y) Largest decline over 1 year	-2.96%	-16.16%	+13.20%
Max Drawdown (3Y) Largest decline over 3 years	-6.67%	-26.59%	+19.92%
Max Drawdown (5Y) Largest decline over 5 years	-19.30%	-42.95%	+23.65%
Max Drawdown (10Y) Largest decline over 10 years	-19.46%	-42.95%	+23.49%
Current Drawdown Current decline from peak	-2.34%	-15.86%	+13.52%
Average Drawdown Average peak-to-trough decline	-2.92%	-13.62%	+10.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.04%	6.02%	-4.98%

Volatility

OIFIX vs. WMGAX - Volatility Comparison

The current volatility for Optimum Fixed Income Fund (OIFIX) is 1.14%, while Delaware Ivy Mid Cap Growth Fund (WMGAX) has a volatility of 4.30%. This indicates that OIFIX experiences smaller price fluctuations and is considered to be less risky than WMGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OIFIX	WMGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.14%	4.30%	-3.16%
Volatility (6M) Calculated over the trailing 6-month period	2.96%	13.90%	-10.94%
Volatility (1Y) Calculated over the trailing 1-year period	3.87%	17.92%	-14.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.92%	25.17%	-19.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.89%	23.14%	-18.25%

OIFIX vs. WMGAX - Expense Ratio Comparison

OIFIX has a 0.80% expense ratio, which is lower than WMGAX's 1.12% expense ratio.

Dividends

OIFIX vs. WMGAX - Dividend Comparison

OIFIX's dividend yield for the trailing twelve months is around 3.86%, less than WMGAX's 10.93% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OIFIX Optimum Fixed Income Fund	3.86%	3.86%	3.97%	3.23%	3.42%	2.21%	6.88%	3.22%	2.43%	2.50%	2.17%	3.24%
WMGAX Delaware Ivy Mid Cap Growth Fund	10.93%	11.10%	15.30%	6.66%	11.94%	13.08%	9.97%	5.23%	10.28%	7.92%	3.98%	10.88%

Frequently Asked Questions

Can I hold both OIFIX and WMGAX in my portfolio?

OIFIX and WMGAX have a correlation of 0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OIFIX or WMGAX?

WMGAX has higher volatility (4.30%) compared to OIFIX (1.14%). In terms of maximum drawdown, OIFIX dropped -19.46% vs WMGAX's -53.74%.

Which has better risk-adjusted returns?

OIFIX currently has the higher Sharpe Ratio (1.07 vs -0.06), 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.