OOSAX vs. EIFAX

Last updated Jun 4, 2026

OOSAX (Invesco Senior Floating Rate Fund) and EIFAX (Eaton Vance Floating-Rate Advantage Fund) are both Bank Loan funds. Over the past 10 years, OOSAX returned 3.63%/yr vs 5.05%/yr for EIFAX. A 0.62 correlation means they provide meaningful diversification when combined. OOSAX charges 1.04%/yr vs 0.47%/yr for EIFAX.

Performance

OOSAX vs. EIFAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Senior Floating Rate Fund (OOSAX) and Eaton Vance Floating-Rate Advantage Fund (EIFAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OOSAX achieves a -0.83% return, which is significantly lower than EIFAX's 0.69% return. Over the past 10 years, OOSAX has underperformed EIFAX with an annualized return of 3.63%, while EIFAX has yielded a comparatively higher 5.05% annualized return.

OOSAX

• 1D: 0.00%
• 1M: 0.14%
• YTD: -0.83%
• 6M: -0.50%
• 1Y: 1.47%
• 3Y*: 5.82%
• 5Y*: 4.91%
• 10Y*: 3.63%

EIFAX

• 1D: 0.00%
• 1M: 0.59%
• YTD: 0.69%
• 6M: 0.86%
• 1Y: 3.71%
• 3Y*: 7.26%
• 5Y*: 4.94%
• 10Y*: 5.05%

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

OOSAX vs. EIFAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OOSAX Invesco Senior Floating Rate Fund	-0.83%	3.78%	7.76%	10.67%	-0.94%	8.66%	-4.46%	2.36%	-0.86%	3.79%
EIFAX Eaton Vance Floating-Rate Advantage Fund	0.69%	4.54%	8.91%	11.86%	-2.98%	5.41%	1.90%	9.02%	0.28%	5.16%

Correlation

The correlation between OOSAX and EIFAX is 0.44, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.44
Correlation (3Y) Calculated over the trailing 3-year period	0.44
Correlation (5Y) Calculated over the trailing 5-year period	0.56
Correlation (10Y) Calculated over the trailing 10-year period	0.57
Correlation (All Time) Calculated using the full available price history since Mar 18, 2008	0.62

The correlation between OOSAX and EIFAX shifts across timeframes, from 0.44 (3 years) to 0.62 (all time), reflecting how their relationship changes across market environments.

Return for Risk

OOSAX vs. EIFAX — Risk / Return Rank

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

OOSAX

OOSAX Risk / Return Rank: 7
OOSAX Sharpe Ratio Rank: 7
OOSAX Sortino Ratio Rank: 9
OOSAX Omega Ratio Rank: 11
OOSAX Calmar Ratio Rank: 5
OOSAX Martin Ratio Rank: 5

EIFAX

EIFAX Risk / Return Rank: 36
EIFAX Sharpe Ratio Rank: 26
EIFAX Sortino Ratio Rank: 54
EIFAX Omega Ratio Rank: 62
EIFAX Calmar Ratio Rank: 20
EIFAX Martin Ratio Rank: 18

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.

OOSAX vs. EIFAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Senior Floating Rate Fund (OOSAX) and Eaton Vance Floating-Rate Advantage Fund (EIFAX). 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.

	OOSAX	EIFAX	Difference
Sharpe ratio: Return per unit of total volatility	0.55	1.45	-0.90
Sortino ratio: Return per unit of downside risk	1.13	3.09	-1.96
Omega ratio: Gain probability vs. loss probability	1.17	1.44	-0.28
Calmar ratio: Return relative to maximum drawdown	0.51	1.63	-1.12
Martin ratio: Return relative to average drawdown	1.13	4.92	-3.79
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OOSAX vs. EIFAX - Sharpe Ratio Comparison

The current OOSAX Sharpe Ratio is 0.55, which is lower than the EIFAX Sharpe Ratio of 1.45. The chart below compares the historical Sharpe Ratios of OOSAX and EIFAX, 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

	OOSAX	EIFAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.55	1.45	-0.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.39	1.58	-0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.89	1.14	-0.25
Sharpe Ratio (All Time) Calculated using the full available price history	1.30	1.20	+0.10

Drawdowns

OOSAX vs. EIFAX - Drawdown Comparison

The maximum OOSAX drawdown since its inception was -32.12%, smaller than the maximum EIFAX drawdown of -40.28%. Use the drawdown chart below to compare losses from any high point for OOSAX and EIFAX.

Drawdown Indicators

	OOSAX	EIFAX	Difference
Max Drawdown Largest peak-to-trough decline	-32.12%	-40.28%	+8.16%
Max Drawdown (1Y) Largest decline over 1 year	-3.23%	-2.29%	-0.94%
Max Drawdown (3Y) Largest decline over 3 years	-3.23%	-3.43%	+0.20%
Max Drawdown (5Y) Largest decline over 5 years	-6.52%	-7.63%	+1.11%
Max Drawdown (10Y) Largest decline over 10 years	-23.53%	-24.22%	+0.69%
Current Drawdown Current decline from peak	-1.57%	0.00%	-1.57%
Average Drawdown Average peak-to-trough decline	-2.15%	-2.27%	+0.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.37%	0.76%	+0.61%

Volatility

OOSAX vs. EIFAX - Volatility Comparison

Invesco Senior Floating Rate Fund (OOSAX) has a higher volatility of 0.86% compared to Eaton Vance Floating-Rate Advantage Fund (EIFAX) at 0.64%. This indicates that OOSAX's price experiences larger fluctuations and is considered to be riskier than EIFAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OOSAX	EIFAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.86%	0.64%	+0.22%
Volatility (6M) Calculated over the trailing 6-month period	2.07%	1.96%	+0.11%
Volatility (1Y) Calculated over the trailing 1-year period	2.99%	2.57%	+0.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.61%	3.14%	+0.47%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.13%	4.46%	-0.33%

OOSAX vs. EIFAX - Expense Ratio Comparison

OOSAX has a 1.04% expense ratio, which is higher than EIFAX's 0.47% expense ratio.

Dividends

OOSAX vs. EIFAX - Dividend Comparison

OOSAX's dividend yield for the trailing twelve months is around 5.18%, less than EIFAX's 7.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EIFAX Eaton Vance Floating-Rate Advantage Fund	7.61%	8.09%	8.91%	7.02%	5.92%	4.03%	4.51%	5.58%	5.10%	4.46%	5.02%	5.29%
OOSAX Invesco Senior Floating Rate Fund	5.18%	6.68%	8.38%	7.76%	7.42%	4.37%	4.84%	5.24%	4.65%	4.08%	4.78%	4.65%

Frequently Asked Questions

Can I hold both OOSAX and EIFAX in my portfolio?

OOSAX and EIFAX have a correlation of 0.44, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OOSAX or EIFAX?

OOSAX has higher volatility (0.86%) compared to EIFAX (0.64%). In terms of maximum drawdown, OOSAX dropped -32.12% vs EIFAX's -40.28%.

Which has better risk-adjusted returns?

EIFAX currently has the higher Sharpe Ratio (1.45 vs 0.55), 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.