LSIIX vs. FNSOX
LSIIX (Loomis Sayles Investment Grade Bond Fund Class Y) and FNSOX (Fidelity Short-Term Bond Index Fund) are both Total Bond Market funds. Over the past 5 years, LSIIX returned 0.47%/yr vs 1.53%/yr for FNSOX. Their 0.69 correlation means they have sometimes moved together and sometimes differently. LSIIX charges 0.54%/yr vs 0.03%/yr for FNSOX.
Performance
LSIIX vs. FNSOX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, LSIIX achieves a -0.64% return, which is significantly lower than FNSOX's 0.23% return.
LSIIX
- 1D
- 0.10%
- 1M
- -1.12%
- 6M
- -1.03%
- YTD
- -0.64%
- 1Y
- 1.58%
- 3Y*
- 4.07%
- 5Y*
- 0.47%
- 10Y*
- 2.81%
- ALL TIME*
- 5.86%
FNSOX
- 1D
- 0.00%
- 1M
- -0.30%
- 6M
- 0.08%
- YTD
- 0.23%
- 1Y
- 2.15%
- 3Y*
- 4.44%
- 5Y*
- 1.53%
- 10Y*
- —
- ALL TIME*
- 2.01%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
LSIIX vs. FNSOX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
LSIIX Loomis Sayles Investment Grade Bond Fund Class Y | -0.64% | 5.58% | 2.91% | 7.50% | -11.31% | 0.18% | 11.60% | 9.04% | -0.31% | 0.53% |
FNSOX Fidelity Short-Term Bond Index Fund | 0.23% | 6.01% | 3.90% | 4.90% | -5.76% | -1.25% | 4.28% | 4.95% | 1.14% | -0.22% |
Correlation
The correlation between LSIIX and FNSOX is 0.64, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.64 |
Correlation (3Y) Balances recent behavior with more history. | 0.71 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.77 |
Correlation (All Time) Calculated using the full available price history since Oct 31, 2017 | 0.69 |
The correlation between LSIIX and FNSOX shifts across timeframes, from 0.64 (1 year) to 0.77 (5 years), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
LSIIX vs. FNSOX — Risk / Return Rank
LSIIX
FNSOX
LSIIX vs. FNSOX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Loomis Sayles Investment Grade Bond Fund Class Y (LSIIX) and Fidelity Short-Term Bond Index Fund (FNSOX). 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.
| LSIIX | FNSOX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.98 | ||
| Sortino ratioReturn per unit of downside risk | -1.61 | ||
| Omega ratioGain probability vs. loss probability | 1.08 | 1.29 | -0.20 |
| Calmar ratioReturn relative to maximum drawdown | 0.62 | 2.04 | -1.42 |
| Martin ratioReturn relative to average drawdown | 1.52 | 5.85 | -4.33 |
Loading charts...
Drawdowns
LSIIX vs. FNSOX - Drawdown Comparison
The maximum LSIIX drawdown since its inception was -20.77%, which is greater than FNSOX's maximum drawdown of -8.92%. Use the drawdown chart below to compare losses from any high point for LSIIX and FNSOX.
Loading charts...
Drawdown Indicators
| LSIIX | FNSOX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -20.77% | -8.92% | -11.85% |
Max Drawdown (1Y)Largest decline over 1 year | -2.99% | -1.47% | -1.52% |
Max Drawdown (3Y)Largest decline over 3 years | -4.62% | -1.51% | -3.11% |
Max Drawdown (5Y)Largest decline over 5 years | -15.62% | -8.77% | -6.85% |
Max Drawdown (10Y)Largest decline over 10 years | -15.62% | — | — |
Current DrawdownCurrent decline from peak | -2.21% | -0.73% | -1.48% |
Average DrawdownAverage peak-to-trough decline | -2.41% | -1.71% | -0.70% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.14% | 0.51% | +0.63% |
Volatility
LSIIX vs. FNSOX - Volatility Comparison
Loomis Sayles Investment Grade Bond Fund Class Y (LSIIX) has a higher volatility of 0.84% compared to Fidelity Short-Term Bond Index Fund (FNSOX) at 0.44%. This indicates that LSIIX's price experiences larger fluctuations and is considered to be riskier than FNSOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| LSIIX | FNSOX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.84% | 0.44% | +0.40% |
Volatility (6M)Calculated over the trailing 6-month period | 2.84% | 1.61% | +1.23% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.89% | 2.07% | +1.82% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.31% | 2.90% | +2.41% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.49% | 2.47% | +2.02% |
LSIIX vs. FNSOX - Expense Ratio Comparison
LSIIX has a 0.54% expense ratio, which is higher than FNSOX's 0.03% expense ratio.
Dividends
LSIIX vs. FNSOX - Dividend Comparison
LSIIX's dividend yield for the trailing twelve months is around 4.04%, more than FNSOX's 3.36% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FNSOX Fidelity Short-Term Bond Index Fund | 3.36% | 3.22% | 2.80% | 1.74% | 0.81% | 0.80% | 1.54% | 2.61% | 2.04% | 0.34% | 0.00% | 0.00% |
LSIIX Loomis Sayles Investment Grade Bond Fund Class Y | 4.04% | 3.68% | 4.86% | 4.25% | 3.32% | 4.10% | 8.20% | 3.56% | 2.18% | 4.10% | 6.71% | 3.91% |
Frequently Asked Questions
LSIIX and FNSOX have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
LSIIX has higher volatility (0.84%) compared to FNSOX (0.44%). In terms of maximum drawdown, LSIIX dropped -20.77% vs FNSOX's -8.92%.
FNSOX currently has the higher Sharpe Ratio (1.46 vs 0.47), 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.
Find the right allocation for LSIIX and FNSOX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer