BDOKX vs. BSPIX

Last updated Jun 23, 2026

BDOKX (iShares MSCI Total International Index Fund Class K) and BSPIX (iShares S&P 500 Index Fund Institutional Class) are both mutual funds - BDOKX is a Foreign Large Cap Equities fund tracking the MSCI ACWI ex USA Index, while BSPIX is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, BDOKX returned 10.00%/yr vs 15.38%/yr for BSPIX. A 0.79 correlation means they provide meaningful diversification when combined. BDOKX charges 0.09%/yr vs 0.10%/yr for BSPIX.

Performance

BDOKX vs. BSPIX - Performance Comparison

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

Returns By Period

In the year-to-date period, BDOKX achieves a 16.32% return, which is significantly higher than BSPIX's 10.13% return. Over the past 10 years, BDOKX has underperformed BSPIX with an annualized return of 10.00%, while BSPIX has yielded a comparatively higher 15.38% annualized return.

BDOKX

• 1D: 1.48%
• 1M: 3.65%
• YTD: 16.32%
• 6M: 17.04%
• 1Y: 34.71%
• 3Y*: 18.83%
• 5Y*: 9.25%
• 10Y*: 10.00%

BSPIX

• 1D: 1.08%
• 1M: 0.46%
• YTD: 10.13%
• 6M: 9.63%
• 1Y: 27.03%
• 3Y*: 20.85%
• 5Y*: 13.99%
• 10Y*: 15.38%

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

BDOKX vs. BSPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BDOKX iShares MSCI Total International Index Fund Class K	16.32%	32.56%	5.37%	15.26%	-16.40%	7.68%	10.77%	23.11%	-13.91%	26.40%
BSPIX iShares S&P 500 Index Fund Institutional Class	10.13%	17.75%	24.85%	26.17%	-18.20%	28.55%	18.35%	31.35%	-4.87%	21.20%

Correlation

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

Return for Risk

BDOKX vs. BSPIX — Risk / Return Rank

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

BDOKX

BDOKX Risk / Return Rank: 63
BDOKX Sharpe Ratio Rank: 64
BDOKX Sortino Ratio Rank: 58
BDOKX Omega Ratio Rank: 63
BDOKX Calmar Ratio Rank: 66
BDOKX Martin Ratio Rank: 62

BSPIX

BSPIX Risk / Return Rank: 65
BSPIX Sharpe Ratio Rank: 64
BSPIX Sortino Ratio Rank: 57
BSPIX Omega Ratio Rank: 60
BSPIX Calmar Ratio Rank: 67
BSPIX Martin Ratio Rank: 78

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.

BDOKX vs. BSPIX - Risk-Adjusted Trends Comparison

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

	BDOKX	BSPIX	Difference
Sharpe ratio: Return per unit of total volatility	2.17	2.16	+0.01
Sortino ratio: Return per unit of downside risk	2.92	2.92	+0.01
Omega ratio: Gain probability vs. loss probability	1.40	1.39	+0.01
Calmar ratio: Return relative to maximum drawdown	2.98	3.02	-0.04
Martin ratio: Return relative to average drawdown	11.58	13.64	-2.06

BDOKX vs. BSPIX - Sharpe Ratio Comparison

The current BDOKX Sharpe Ratio is 2.17, which is comparable to the BSPIX Sharpe Ratio of 2.16. The chart below compares the historical Sharpe Ratios of BDOKX and BSPIX, 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

BDOKX vs. BSPIX - Drawdown Comparison

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

Drawdown Indicators

	BDOKX	BSPIX	Difference
Max Drawdown Largest peak-to-trough decline	-34.22%	-33.75%	-0.47%
Max Drawdown (1Y) Largest decline over 1 year	-11.38%	-8.91%	-2.47%
Max Drawdown (3Y) Largest decline over 3 years	-13.54%	-18.74%	+5.20%
Max Drawdown (5Y) Largest decline over 5 years	-30.00%	-24.55%	-5.45%
Max Drawdown (10Y) Largest decline over 10 years	-34.22%	-33.75%	-0.47%
Current Drawdown Current decline from peak	0.00%	-1.36%	+1.36%
Average Drawdown Average peak-to-trough decline	-8.20%	-3.93%	-4.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.93%	1.97%	+0.96%

Volatility

BDOKX vs. BSPIX - Volatility Comparison

iShares MSCI Total International Index Fund Class K (BDOKX) has a higher volatility of 6.53% compared to iShares S&P 500 Index Fund Institutional Class (BSPIX) at 4.77%. This indicates that BDOKX's price experiences larger fluctuations and is considered to be riskier than BSPIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BDOKX	BSPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.53%	4.77%	+1.76%
Volatility (6M) Calculated over the trailing 6-month period	13.58%	9.90%	+3.68%
Volatility (1Y) Calculated over the trailing 1-year period	15.66%	12.47%	+3.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.65%	16.98%	-1.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.32%	18.07%	-1.75%

BDOKX vs. BSPIX - Expense Ratio Comparison

BDOKX has a 0.09% expense ratio, which is lower than BSPIX's 0.10% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

BDOKX vs. BSPIX - Dividend Comparison

BDOKX's dividend yield for the trailing twelve months is around 2.47%, more than BSPIX's 1.52% 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	1.52%	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 BDOKX and BSPIX in my portfolio?

BDOKX and BSPIX 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, BDOKX or BSPIX?

BDOKX has higher volatility (6.53%) compared to BSPIX (4.77%). In terms of maximum drawdown, BDOKX dropped -34.22% vs BSPIX's -33.75%.

Which has better risk-adjusted returns?

BDOKX currently has the higher Sharpe Ratio (2.17 vs 2.16), 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.