BSIVX vs. FSSNX

Last updated Jun 4, 2026

BSIVX (BlackRock Small Cap Index V.I. Fund) and FSSNX (Fidelity Small Cap Index Fund) are both Small Cap Blend Equities funds. Over the past 5 years, BSIVX returned 6.40%/yr vs 6.72%/yr for FSSNX. With a 0.98 correlation, they move nearly in lockstep. BSIVX charges 0.21%/yr vs 0.03%/yr for FSSNX.

Performance

BSIVX vs. FSSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock Small Cap Index V.I. Fund (BSIVX) and Fidelity Small Cap Index Fund (FSSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with BSIVX having a 18.59% return and FSSNX slightly higher at 18.72%.

BSIVX

• 1D: 0.87%
• 1M: 4.93%
• YTD: 18.59%
• 6M: 17.36%
• 1Y: 41.04%
• 3Y*: 18.41%
• 5Y*: 6.40%
• 10Y*: —

FSSNX

• 1D: 0.91%
• 1M: 4.97%
• YTD: 18.72%
• 6M: 17.45%
• 1Y: 41.33%
• 3Y*: 18.75%
• 5Y*: 6.72%
• 10Y*: 11.22%

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

BSIVX vs. FSSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
BSIVX BlackRock Small Cap Index V.I. Fund	18.59%	12.68%	9.71%	18.42%	-20.48%	14.28%	19.81%	25.35%	-12.05%
FSSNX Fidelity Small Cap Index Fund	18.72%	12.94%	11.71%	17.11%	-20.28%	14.70%	19.99%	25.70%	-8.45%

Correlation

The correlation between BSIVX and FSSNX is 1.00 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	1.00
Correlation (3Y) Calculated over the trailing 3-year period	1.00
Correlation (5Y) Calculated over the trailing 5-year period	1.00
Correlation (All Time) Calculated using the full available price history since Oct 30, 2018	0.98

The correlation between BSIVX and FSSNX has been stable across timeframes, ranging from 0.98 to 1.00 - a consistent structural relationship.

Return for Risk

BSIVX vs. FSSNX — Risk / Return Rank

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

BSIVX

BSIVX Risk / Return Rank: 63
BSIVX Sharpe Ratio Rank: 58
BSIVX Sortino Ratio Rank: 54
BSIVX Omega Ratio Rank: 46
BSIVX Calmar Ratio Rank: 84
BSIVX Martin Ratio Rank: 74

FSSNX

FSSNX Risk / Return Rank: 64
FSSNX Sharpe Ratio Rank: 61
FSSNX Sortino Ratio Rank: 55
FSSNX Omega Ratio Rank: 47
FSSNX Calmar Ratio Rank: 85
FSSNX Martin Ratio Rank: 74

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.

BSIVX vs. FSSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Small Cap Index V.I. Fund (BSIVX) and Fidelity Small Cap Index Fund (FSSNX). 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.

	BSIVX	FSSNX	Difference
Sharpe ratio: Return per unit of total volatility	2.27	2.29	-0.01
Sortino ratio: Return per unit of downside risk	3.13	3.14	-0.01
Omega ratio: Gain probability vs. loss probability	1.37	1.37	0.00
Calmar ratio: Return relative to maximum drawdown	3.94	3.98	-0.04
Martin ratio: Return relative to average drawdown	13.99	14.13	-0.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BSIVX vs. FSSNX - Sharpe Ratio Comparison

The current BSIVX Sharpe Ratio is 2.27, which is comparable to the FSSNX Sharpe Ratio of 2.29. The chart below compares the historical Sharpe Ratios of BSIVX and FSSNX, 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

	BSIVX	FSSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.27	2.29	-0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	0.30	-0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.48	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.54	-0.14

Drawdowns

BSIVX vs. FSSNX - Drawdown Comparison

The maximum BSIVX drawdown since its inception was -41.76%, roughly equal to the maximum FSSNX drawdown of -41.72%. Use the drawdown chart below to compare losses from any high point for BSIVX and FSSNX.

Drawdown Indicators

	BSIVX	FSSNX	Difference
Max Drawdown Largest peak-to-trough decline	-41.76%	-41.72%	-0.04%
Max Drawdown (1Y) Largest decline over 1 year	-11.02%	-11.00%	-0.02%
Max Drawdown (3Y) Largest decline over 3 years	-27.49%	-27.45%	-0.04%
Max Drawdown (5Y) Largest decline over 5 years	-32.10%	-31.87%	-0.23%
Max Drawdown (10Y) Largest decline over 10 years	—	-41.72%	—
Current Drawdown Current decline from peak	-0.13%	-0.14%	+0.01%
Average Drawdown Average peak-to-trough decline	-11.48%	-8.29%	-3.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.10%	3.09%	+0.01%

Volatility

BSIVX vs. FSSNX - Volatility Comparison

BlackRock Small Cap Index V.I. Fund (BSIVX) and Fidelity Small Cap Index Fund (FSSNX) have volatilities of 5.52% and 5.59%, 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

	BSIVX	FSSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.52%	5.59%	-0.07%
Volatility (6M) Calculated over the trailing 6-month period	13.55%	13.59%	-0.04%
Volatility (1Y) Calculated over the trailing 1-year period	19.10%	19.13%	-0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.61%	22.58%	+0.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.20%	23.45%	+2.75%

BSIVX vs. FSSNX - Expense Ratio Comparison

BSIVX has a 0.21% expense ratio, which is higher than FSSNX's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

BSIVX vs. FSSNX - Dividend Comparison

BSIVX's dividend yield for the trailing twelve months is around 3.45%, more than FSSNX's 0.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BSIVX BlackRock Small Cap Index V.I. Fund	3.45%	4.09%	7.44%	3.69%	3.33%	13.30%	4.19%	6.04%	33.10%	0.00%	0.00%	0.00%
FSSNX Fidelity Small Cap Index Fund	0.91%	1.08%	1.04%	1.43%	1.26%	3.92%	0.94%	2.96%	4.94%	3.37%	2.27%	2.66%

Frequently Asked Questions

Can I hold both BSIVX and FSSNX in my portfolio?

With a correlation of 1.00, BSIVX and FSSNX 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, BSIVX or FSSNX?

FSSNX has higher volatility (5.59%) compared to BSIVX (5.52%). In terms of maximum drawdown, BSIVX dropped -41.76% vs FSSNX's -41.72%.

Which has better risk-adjusted returns?

FSSNX currently has the higher Sharpe Ratio (2.29 vs 2.27), 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.