BKTSX vs. VTSNX

Last updated Apr 2, 2026

Compare and contrast key facts about iShares Total U.S. Stock Market Index Fund Class K (BKTSX) and Vanguard Total International Stock Index Fund Institutional Shares (VTSNX).

BKTSX is a passively managed fund by iShares that tracks the performance of the Russell 3000 Index. It was launched on Aug 13, 2015. VTSNX is managed by Vanguard. It was launched on Nov 29, 2010.

Performance

BKTSX vs. VTSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Total U.S. Stock Market Index Fund Class K (BKTSX) and Vanguard Total International Stock Index Fund Institutional Shares (VTSNX). The values are adjusted to include any dividend payments, if applicable.

BKTSX vs. VTSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BKTSX iShares Total U.S. Stock Market Index Fund Class K	-3.96%	17.15%	23.83%	26.02%	-19.05%	25.56%	20.82%	31.12%	-5.37%	21.02%
VTSNX Vanguard Total International Stock Index Fund Institutional Shares	1.74%	32.24%	5.38%	15.29%	-15.99%	8.64%	11.27%	21.69%	-14.41%	27.54%

Returns By Period

In the year-to-date period, BKTSX achieves a -3.96% return, which is significantly lower than VTSNX's 1.74% return. Over the past 10 years, BKTSX has outperformed VTSNX with an annualized return of 13.64%, while VTSNX has yielded a comparatively lower 8.85% annualized return.

BKTSX

• 1D: 2.93%
• 1M: -5.12%
• YTD: -3.96%
• 6M: -1.99%
• 1Y: 17.59%
• 3Y*: 17.88%
• 5Y*: 10.62%
• 10Y*: 13.64%

VTSNX

• 1D: 2.80%
• 1M: -7.28%
• YTD: 1.74%
• 6M: 5.73%
• 1Y: 27.11%
• 3Y*: 15.29%
• 5Y*: 7.23%
• 10Y*: 8.85%

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

BKTSX vs. VTSNX - Expense Ratio Comparison

BKTSX has a 0.02% expense ratio, which is lower than VTSNX's 0.08% 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%.

VTSNX

Vanguard Total International Stock Index Fund Institutional Shares

BKTSX

iShares Total U.S. Stock Market Index Fund Class K

Return for Risk

BKTSX vs. VTSNX — Risk / Return Rank

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

BKTSX

BKTSX Risk / Return Rank: 49
BKTSX Sharpe Ratio Rank: 41
BKTSX Sortino Ratio Rank: 45
BKTSX Omega Ratio Rank: 47
BKTSX Calmar Ratio Rank: 49
BKTSX Martin Ratio Rank: 62

VTSNX

VTSNX Risk / Return Rank: 86
VTSNX Sharpe Ratio Rank: 87
VTSNX Sortino Ratio Rank: 86
VTSNX Omega Ratio Rank: 84
VTSNX Calmar Ratio Rank: 88
VTSNX Martin Ratio Rank: 86

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.

BKTSX vs. VTSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Total U.S. Stock Market Index Fund Class K (BKTSX) and Vanguard Total International Stock Index Fund Institutional Shares (VTSNX). 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.

	BKTSX	VTSNX	Difference
Sharpe ratio Return per unit of total volatility	0.98	1.76	-0.78
Sortino ratio Return per unit of downside risk	1.50	2.32	-0.83
Omega ratio Gain probability vs. loss probability	1.23	1.35	-0.13
Calmar ratio Return relative to maximum drawdown	1.50	2.35	-0.85
Martin ratio Return relative to average drawdown	7.22	9.23	-2.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BKTSX vs. VTSNX - Sharpe Ratio Comparison

The current BKTSX Sharpe Ratio is 0.98, which is lower than the VTSNX Sharpe Ratio of 1.76. The chart below compares the historical Sharpe Ratios of BKTSX and VTSNX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	BKTSX	VTSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.98	1.76	-0.78
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.61	0.49	+0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.56	+0.18
Sharpe Ratio (All Time) Calculated using the full available price history	0.75	0.37	+0.37

Correlation

The correlation between BKTSX and VTSNX is 0.79, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

BKTSX vs. VTSNX - Dividend Comparison

BKTSX's dividend yield for the trailing twelve months is around 1.18%, less than VTSNX's 2.98% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BKTSX iShares Total U.S. Stock Market Index Fund Class K	1.18%	1.14%	1.27%	1.46%	1.64%	1.58%	1.51%	2.15%	2.49%	2.17%	1.54%	0.00%
VTSNX Vanguard Total International Stock Index Fund Institutional Shares	2.98%	3.17%	3.36%	3.24%	3.08%	3.08%	2.13%	3.16%	3.19%	2.75%	2.95%	2.86%

Drawdowns

BKTSX vs. VTSNX - Drawdown Comparison

The maximum BKTSX drawdown since its inception was -34.97%, roughly equal to the maximum VTSNX drawdown of -35.72%. Use the drawdown chart below to compare losses from any high point for BKTSX and VTSNX.

Drawdown Indicators

	BKTSX	VTSNX	Difference
Max Drawdown Largest peak-to-trough decline	-34.97%	-35.72%	+0.75%
Max Drawdown (1Y) Largest decline over 1 year	-12.36%	-11.29%	-1.07%
Max Drawdown (5Y) Largest decline over 5 years	-24.98%	-29.55%	+4.57%
Max Drawdown (10Y) Largest decline over 10 years	-34.97%	-35.72%	+0.75%
Current Drawdown Current decline from peak	-6.20%	-8.81%	+2.61%
Average Drawdown Average peak-to-trough decline	-4.59%	-8.16%	+3.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.58%	2.88%	-0.30%

Volatility

BKTSX vs. VTSNX - Volatility Comparison

The current volatility for iShares Total U.S. Stock Market Index Fund Class K (BKTSX) is 5.45%, while Vanguard Total International Stock Index Fund Institutional Shares (VTSNX) has a volatility of 7.48%. This indicates that BKTSX experiences smaller price fluctuations and is considered to be less risky than VTSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BKTSX	VTSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.45%	7.48%	-2.03%
Volatility (6M) Calculated over the trailing 6-month period	9.72%	10.82%	-1.10%
Volatility (1Y) Calculated over the trailing 1-year period	18.56%	15.73%	+2.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.38%	14.84%	+2.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.40%	15.85%	+2.55%