NEFRX vs. LSIIX

Last updated Jun 4, 2026

NEFRX (Loomis Sayles Core Plus Bond Fund) and LSIIX (Loomis Sayles Investment Grade Bond Fund Class Y) are both mutual funds - NEFRX is a Intermediate Core-Plus Bond fund managed by Natixis, while LSIIX is a Total Bond Market fund managed by Natixis. Over the past 10 years, NEFRX returned 2.17%/yr vs 3.13%/yr for LSIIX. A 0.80 correlation means they provide meaningful diversification when combined. NEFRX charges 0.71%/yr vs 0.54%/yr for LSIIX.

Performance

NEFRX vs. LSIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Loomis Sayles Core Plus Bond Fund (NEFRX) and Loomis Sayles Investment Grade Bond Fund Class Y (LSIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NEFRX achieves a 0.31% return, which is significantly higher than LSIIX's 0.25% return. Over the past 10 years, NEFRX has underperformed LSIIX with an annualized return of 2.17%, while LSIIX has yielded a comparatively higher 3.13% annualized return.

NEFRX

• 1D: 0.09%
• 1M: 0.45%
• YTD: 0.31%
• 6M: 0.08%
• 1Y: 5.38%
• 3Y*: 3.62%
• 5Y*: 0.04%
• 10Y*: 2.17%

LSIIX

• 1D: 0.00%
• 1M: 0.53%
• YTD: 0.25%
• 6M: 0.23%
• 1Y: 3.99%
• 3Y*: 4.49%
• 5Y*: 0.93%
• 10Y*: 3.13%

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

NEFRX vs. LSIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NEFRX Loomis Sayles Core Plus Bond Fund	0.31%	7.24%	0.60%	5.91%	-12.94%	-1.68%	10.29%	8.76%	-0.86%	4.92%
LSIIX Loomis Sayles Investment Grade Bond Fund Class Y	0.25%	5.58%	2.91%	7.50%	-11.31%	0.18%	11.60%	9.04%	-0.31%	6.65%

Correlation

The correlation between NEFRX and LSIIX is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Jan 2, 1997	0.80

The correlation between NEFRX and LSIIX shifts across timeframes, from 0.80 (all time) to 0.94 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

NEFRX vs. LSIIX — Risk / Return Rank

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

NEFRX

NEFRX Risk / Return Rank: 31
NEFRX Sharpe Ratio Rank: 29
NEFRX Sortino Ratio Rank: 33
NEFRX Omega Ratio Rank: 29
NEFRX Calmar Ratio Rank: 35
NEFRX Martin Ratio Rank: 27

LSIIX

LSIIX Risk / Return Rank: 18
LSIIX Sharpe Ratio Rank: 18
LSIIX Sortino Ratio Rank: 18
LSIIX Omega Ratio Rank: 17
LSIIX Calmar Ratio Rank: 19
LSIIX Martin Ratio Rank: 17

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.

NEFRX vs. LSIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Loomis Sayles Core Plus Bond Fund (NEFRX) and Loomis Sayles Investment Grade Bond Fund Class Y (LSIIX). 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.

	NEFRX	LSIIX	Difference
Sharpe ratio: Return per unit of total volatility	1.55	1.19	+0.36
Sortino ratio: Return per unit of downside risk	2.40	1.75	+0.64
Omega ratio: Gain probability vs. loss probability	1.28	1.22	+0.07
Calmar ratio: Return relative to maximum drawdown	2.22	1.61	+0.61
Martin ratio: Return relative to average drawdown	6.44	4.65	+1.79
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NEFRX vs. LSIIX - Sharpe Ratio Comparison

The current NEFRX Sharpe Ratio is 1.55, which is comparable to the LSIIX Sharpe Ratio of 1.19. The chart below compares the historical Sharpe Ratios of NEFRX and LSIIX, 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

	NEFRX	LSIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.55	1.19	+0.36
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.01	0.18	-0.18
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.44	0.71	-0.27
Sharpe Ratio (All Time) Calculated using the full available price history	0.74	1.14	-0.41

Drawdowns

NEFRX vs. LSIIX - Drawdown Comparison

The maximum NEFRX drawdown since its inception was -25.45%, which is greater than LSIIX's maximum drawdown of -20.77%. Use the drawdown chart below to compare losses from any high point for NEFRX and LSIIX.

Drawdown Indicators

	NEFRX	LSIIX	Difference
Max Drawdown Largest peak-to-trough decline	-25.45%	-20.77%	-4.68%
Max Drawdown (1Y) Largest decline over 1 year	-2.92%	-2.99%	+0.07%
Max Drawdown (3Y) Largest decline over 3 years	-7.95%	-5.45%	-2.50%
Max Drawdown (5Y) Largest decline over 5 years	-18.55%	-15.62%	-2.93%
Max Drawdown (10Y) Largest decline over 10 years	-18.76%	-15.62%	-3.14%
Current Drawdown Current decline from peak	-1.89%	-1.33%	-0.56%
Average Drawdown Average peak-to-trough decline	-3.97%	-2.42%	-1.55%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.17%	1.17%	0.00%

Volatility

NEFRX vs. LSIIX - Volatility Comparison

Loomis Sayles Core Plus Bond Fund (NEFRX) and Loomis Sayles Investment Grade Bond Fund Class Y (LSIIX) have volatilities of 1.36% and 1.34%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NEFRX	LSIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.36%	1.34%	+0.02%
Volatility (6M) Calculated over the trailing 6-month period	2.73%	2.82%	-0.09%
Volatility (1Y) Calculated over the trailing 1-year period	4.19%	4.03%	+0.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.23%	5.28%	+0.95%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.04%	4.51%	+0.53%

NEFRX vs. LSIIX - Expense Ratio Comparison

NEFRX has a 0.71% expense ratio, which is higher than LSIIX's 0.54% expense ratio.

Dividends

NEFRX vs. LSIIX - Dividend Comparison

NEFRX's dividend yield for the trailing twelve months is around 3.61%, more than LSIIX's 3.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LSIIX Loomis Sayles Investment Grade Bond Fund Class Y	3.54%	3.68%	4.86%	4.25%	3.32%	4.10%	8.20%	3.56%	2.18%	4.10%	6.71%	3.91%
NEFRX Loomis Sayles Core Plus Bond Fund	3.61%	3.97%	3.90%	3.58%	3.10%	2.34%	4.04%	2.51%	2.87%	2.68%	3.17%	2.58%

Frequently Asked Questions

Can I hold both NEFRX and LSIIX in my portfolio?

With a correlation of 0.93, NEFRX and LSIIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, NEFRX or LSIIX?

NEFRX has higher volatility (1.36%) compared to LSIIX (1.34%). In terms of maximum drawdown, NEFRX dropped -25.45% vs LSIIX's -20.77%.

Which has better risk-adjusted returns?

NEFRX currently has the higher Sharpe Ratio (1.55 vs 1.19), 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.