BSPIX vs. BDOKX

Last updated Jun 24, 2026

BSPIX (iShares S&P 500 Index Fund Institutional Class) and BDOKX (iShares MSCI Total International Index Fund Class K) are both mutual funds - BSPIX is a S&P 500 fund tracking the S&P 500 Index, while BDOKX is a Foreign Large Cap Equities fund tracking the MSCI ACWI ex USA Index. Both are passively managed. Over the past 10 years, BSPIX returned 15.60%/yr vs 10.51%/yr for BDOKX. A 0.79 correlation means they provide meaningful diversification when combined. BSPIX charges 0.10%/yr vs 0.09%/yr for BDOKX.

Performance

BSPIX vs. BDOKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares S&P 500 Index Fund Institutional Class (BSPIX) and iShares MSCI Total International Index Fund Class K (BDOKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BSPIX achieves a 9.73% return, which is significantly lower than BDOKX's 16.62% return. Over the past 10 years, BSPIX has outperformed BDOKX with an annualized return of 15.60%, while BDOKX has yielded a comparatively lower 10.51% annualized return.

BSPIX

• 1D: -0.37%
• 1M: 0.09%
• YTD: 9.73%
• 6M: 8.73%
• 1Y: 25.36%
• 3Y*: 21.26%
• 5Y*: 13.49%
• 10Y*: 15.60%

BDOKX

• 1D: 0.27%
• 1M: 3.93%
• YTD: 16.62%
• 6M: 16.53%
• 1Y: 34.25%
• 3Y*: 20.30%
• 5Y*: 9.15%
• 10Y*: 10.51%

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

BSPIX vs. BDOKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BSPIX iShares S&P 500 Index Fund Institutional Class	9.73%	17.75%	24.85%	26.17%	-18.20%	28.55%	18.35%	31.35%	-4.87%	21.20%
BDOKX iShares MSCI Total International Index Fund Class K	16.62%	32.56%	5.37%	15.26%	-16.40%	7.68%	10.77%	23.11%	-13.91%	26.40%

Correlation

The correlation between BSPIX and BDOKX is 0.82, 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	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.75
Correlation (5Y) Calculated over the trailing 5-year period	0.77
Correlation (10Y) Calculated over the trailing 10-year period	0.79
Correlation (All Time) Calculated using the full available price history since Jan 2, 2014	0.79

The correlation between BSPIX and BDOKX has been stable across timeframes, ranging from 0.75 to 0.82 - a consistent structural relationship.

Return for Risk

BSPIX vs. BDOKX — Risk / Return Rank

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

BSPIX

BSPIX Risk / Return Rank: 64
BSPIX Sharpe Ratio Rank: 63
BSPIX Sortino Ratio Rank: 56
BSPIX Omega Ratio Rank: 58
BSPIX Calmar Ratio Rank: 66
BSPIX Martin Ratio Rank: 77

BDOKX

BDOKX Risk / Return Rank: 67
BDOKX Sharpe Ratio Rank: 70
BDOKX Sortino Ratio Rank: 62
BDOKX Omega Ratio Rank: 68
BDOKX Calmar Ratio Rank: 71
BDOKX Martin Ratio Rank: 66

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.

BSPIX vs. BDOKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares S&P 500 Index Fund Institutional Class (BSPIX) and iShares MSCI Total International Index Fund Class K (BDOKX). 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.

	BSPIX	BDOKX	Difference
Sharpe ratio: Return per unit of total volatility	2.14	2.25	-0.11
Sortino ratio: Return per unit of downside risk	2.89	3.02	-0.13
Omega ratio: Gain probability vs. loss probability	1.39	1.42	-0.03
Calmar ratio: Return relative to maximum drawdown	3.00	3.10	-0.10
Martin ratio: Return relative to average drawdown	13.51	12.02	+1.49

BSPIX vs. BDOKX - Sharpe Ratio Comparison

The current BSPIX Sharpe Ratio is 2.14, which is comparable to the BDOKX Sharpe Ratio of 2.25. The chart below compares the historical Sharpe Ratios of BSPIX and BDOKX, 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

BSPIX vs. BDOKX - Drawdown Comparison

The maximum BSPIX drawdown since its inception was -33.75%, roughly equal to the maximum BDOKX drawdown of -34.22%. Use the drawdown chart below to compare losses from any high point for BSPIX and BDOKX.

Drawdown Indicators

	BSPIX	BDOKX	Difference
Max Drawdown Largest peak-to-trough decline	-33.75%	-34.22%	+0.47%
Max Drawdown (1Y) Largest decline over 1 year	-8.91%	-11.38%	+2.47%
Max Drawdown (3Y) Largest decline over 3 years	-18.74%	-13.54%	-5.20%
Max Drawdown (5Y) Largest decline over 5 years	-24.55%	-30.00%	+5.45%
Max Drawdown (10Y) Largest decline over 10 years	-33.75%	-34.22%	+0.47%
Current Drawdown Current decline from peak	-1.72%	0.00%	-1.72%
Average Drawdown Average peak-to-trough decline	-3.93%	-8.20%	+4.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.97%	2.93%	-0.96%

Volatility

BSPIX vs. BDOKX - Volatility Comparison

The current volatility for iShares S&P 500 Index Fund Institutional Class (BSPIX) is 4.67%, while iShares MSCI Total International Index Fund Class K (BDOKX) has a volatility of 6.42%. This indicates that BSPIX experiences smaller price fluctuations and is considered to be less risky than BDOKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BSPIX	BDOKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.67%	6.42%	-1.75%
Volatility (6M) Calculated over the trailing 6-month period	9.83%	13.56%	-3.73%
Volatility (1Y) Calculated over the trailing 1-year period	12.49%	15.67%	-3.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.97%	15.65%	+1.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.07%	16.30%	+1.77%

BSPIX vs. BDOKX - Expense Ratio Comparison

BSPIX has a 0.10% expense ratio, which is higher than BDOKX's 0.09% 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

BSPIX vs. BDOKX - Dividend Comparison

BSPIX's dividend yield for the trailing twelve months is around 1.53%, less than BDOKX's 2.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BDOKX iShares MSCI Total International Index Fund Class K	2.47%	3.01%	2.84%	2.94%	2.84%	3.01%	1.98%	4.48%	3.28%	1.81%	3.51%	3.87%
BSPIX iShares S&P 500 Index Fund Institutional Class	1.53%	1.66%	1.35%	1.44%	1.94%	1.76%	1.60%	1.92%	1.94%	1.57%	2.30%	2.42%

Frequently Asked Questions

Can I hold both BSPIX and BDOKX in my portfolio?

BSPIX and BDOKX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BSPIX or BDOKX?

BDOKX has higher volatility (6.42%) compared to BSPIX (4.67%). In terms of maximum drawdown, BSPIX dropped -33.75% vs BDOKX's -34.22%.

Which has better risk-adjusted returns?

BDOKX currently has the higher Sharpe Ratio (2.25 vs 2.14), 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.