RNSIX vs. FNDX

Last updated Jun 13, 2026

RNSIX (RiverNorth Doubleline Strategic Income Fund) and FNDX (Schwab Fundamental U.S. Large Company Index ETF) are both funds - RNSIX is a Multisector Bonds fund managed by RiverNorth Funds, while FNDX is a Large Cap Value Equities fund tracking the RAFI Fundamental High Liquidity US Large Index. Over the past 10 years, RNSIX returned 3.77%/yr vs 14.45%/yr for FNDX. At a 0.25 correlation, their price movements are largely independent. RNSIX charges 0.87%/yr vs 0.25%/yr for FNDX.

Performance

RNSIX vs. FNDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in RiverNorth Doubleline Strategic Income Fund (RNSIX) and Schwab Fundamental U.S. Large Company Index ETF (FNDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RNSIX achieves a 0.66% return, which is significantly lower than FNDX's 15.49% return. Over the past 10 years, RNSIX has underperformed FNDX with an annualized return of 3.77%, while FNDX has yielded a comparatively higher 14.45% annualized return.

RNSIX

• 1D: 0.35%
• 1M: 0.78%
• YTD: 0.66%
• 6M: 1.10%
• 1Y: 5.52%
• 3Y*: 7.15%
• 5Y*: 2.26%
• 10Y*: 3.77%

FNDX

• 1D: 0.90%
• 1M: 3.30%
• YTD: 15.49%
• 6M: 14.86%
• 1Y: 32.83%
• 3Y*: 20.28%
• 5Y*: 13.11%
• 10Y*: 14.45%

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

RNSIX vs. FNDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RNSIX RiverNorth Doubleline Strategic Income Fund	0.66%	7.59%	7.29%	9.18%	-12.68%	3.66%	6.03%	11.96%	-1.28%	4.23%
FNDX Schwab Fundamental U.S. Large Company Index ETF	15.49%	16.94%	16.77%	18.23%	-6.92%	31.73%	9.12%	28.65%	-7.30%	17.12%

Correlation

The correlation between RNSIX and FNDX is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.42
Correlation (3Y) Calculated over the trailing 3-year period	0.32
Correlation (5Y) Calculated over the trailing 5-year period	0.28
Correlation (10Y) Calculated over the trailing 10-year period	0.24
Correlation (All Time) Calculated using the full available price history since Aug 15, 2013	0.25

The correlation between RNSIX and FNDX shifts across timeframes, from 0.24 (10 years) to 0.42 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

RNSIX vs. FNDX — Risk / Return Rank

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

RNSIX

RNSIX Risk / Return Rank: 67
RNSIX Sharpe Ratio Rank: 67
RNSIX Sortino Ratio Rank: 74
RNSIX Omega Ratio Rank: 71
RNSIX Calmar Ratio Rank: 68
RNSIX Martin Ratio Rank: 56

FNDX

FNDX Risk / Return Rank: 93
FNDX Sharpe Ratio Rank: 94
FNDX Sortino Ratio Rank: 93
FNDX Omega Ratio Rank: 92
FNDX Calmar Ratio Rank: 91
FNDX Martin Ratio Rank: 92

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.

RNSIX vs. FNDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for RiverNorth Doubleline Strategic Income Fund (RNSIX) and Schwab Fundamental U.S. Large Company Index ETF (FNDX). 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.

	RNSIX	FNDX	Difference
Sharpe ratio: Return per unit of total volatility	1.98	3.03	-1.06
Sortino ratio: Return per unit of downside risk	3.00	4.21	-1.21
Omega ratio: Gain probability vs. loss probability	1.39	1.56	-0.17
Calmar ratio: Return relative to maximum drawdown	2.70	5.23	-2.53
Martin ratio: Return relative to average drawdown	9.41	20.31	-10.90

RNSIX vs. FNDX - Sharpe Ratio Comparison

The current RNSIX Sharpe Ratio is 1.98, which is lower than the FNDX Sharpe Ratio of 3.03. The chart below compares the historical Sharpe Ratios of RNSIX and FNDX, 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

RNSIX vs. FNDX - Drawdown Comparison

The maximum RNSIX drawdown since its inception was -16.08%, smaller than the maximum FNDX drawdown of -37.72%. Use the drawdown chart below to compare losses from any high point for RNSIX and FNDX.

Drawdown Indicators

	RNSIX	FNDX	Difference
Max Drawdown Largest peak-to-trough decline	-16.08%	-37.72%	+21.64%
Max Drawdown (1Y) Largest decline over 1 year	-2.05%	-6.06%	+4.01%
Max Drawdown (3Y) Largest decline over 3 years	-5.14%	-16.30%	+11.16%
Max Drawdown (5Y) Largest decline over 5 years	-16.08%	-19.06%	+2.98%
Max Drawdown (10Y) Largest decline over 10 years	-16.08%	-37.72%	+21.64%
Current Drawdown Current decline from peak	-0.44%	0.00%	-0.44%
Average Drawdown Average peak-to-trough decline	-2.07%	-3.55%	+1.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.59%	1.56%	-0.97%

Volatility

RNSIX vs. FNDX - Volatility Comparison

The current volatility for RiverNorth Doubleline Strategic Income Fund (RNSIX) is 0.96%, while Schwab Fundamental U.S. Large Company Index ETF (FNDX) has a volatility of 3.18%. This indicates that RNSIX experiences smaller price fluctuations and is considered to be less risky than FNDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RNSIX	FNDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.96%	3.18%	-2.22%
Volatility (6M) Calculated over the trailing 6-month period	2.07%	7.58%	-5.51%
Volatility (1Y) Calculated over the trailing 1-year period	2.81%	10.45%	-7.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.45%	15.21%	-10.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.48%	17.51%	-13.03%

RNSIX vs. FNDX - Expense Ratio Comparison

RNSIX has a 0.87% expense ratio, which is higher than FNDX's 0.25% expense ratio.

Dividends

RNSIX vs. FNDX - Dividend Comparison

RNSIX's dividend yield for the trailing twelve months is around 6.64%, more than FNDX's 1.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNDX Schwab Fundamental U.S. Large Company Index ETF	1.44%	1.63%	1.76%	1.82%	2.07%	1.64%	2.29%	2.23%	2.40%	1.86%	2.01%	2.01%
RNSIX RiverNorth Doubleline Strategic Income Fund	6.64%	6.52%	6.37%	5.13%	8.40%	4.20%	4.34%	5.17%	5.45%	5.08%	5.22%	5.83%

Frequently Asked Questions

Can I hold both RNSIX and FNDX in my portfolio?

RNSIX and FNDX have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RNSIX or FNDX?

FNDX has higher volatility (3.18%) compared to RNSIX (0.96%). In terms of maximum drawdown, RNSIX dropped -16.08% vs FNDX's -37.72%.

Which has better risk-adjusted returns?

FNDX currently has the higher Sharpe Ratio (3.03 vs 1.98), 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.