BRGKX vs. BASMX

Last updated Apr 2, 2026

Compare and contrast key facts about iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX).

BRGKX is a passively managed fund by iShares that tracks the performance of the Russell 1000 Index. It was launched on Mar 31, 2011. BASMX is a passively managed fund by iShares that tracks the performance of the Russell 3000 Index. It was launched on Aug 13, 2015. Both BRGKX and BASMX are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

BRGKX vs. BASMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX). The values are adjusted to include any dividend payments, if applicable.

BRGKX vs. BASMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRGKX iShares Russell 1000 Large-Cap Index Fund Class K	-4.45%	17.28%	24.44%	26.49%	-19.13%	26.24%	20.85%	31.30%	-4.86%	21.18%
BASMX iShares Total U.S. Stock Market Index Fund Investor A Shares	-4.03%	16.81%	23.46%	25.63%	-19.32%	25.26%	20.37%	30.71%	-5.57%	20.65%

Returns By Period

In the year-to-date period, BRGKX achieves a -4.45% return, which is significantly lower than BASMX's -4.03% return. Both investments have delivered pretty close results over the past 10 years, with BRGKX having a 13.68% annualized return and BASMX not far behind at 13.31%.

BRGKX

• 1D: 2.64%
• 1M: -5.34%
• YTD: -4.45%
• 6M: -2.48%
• 1Y: 16.85%
• 3Y*: 17.97%
• 5Y*: 10.92%
• 10Y*: 13.68%

BASMX

• 1D: 2.94%
• 1M: -5.13%
• YTD: -4.03%
• 6M: -2.11%
• 1Y: 17.26%
• 3Y*: 17.52%
• 5Y*: 10.30%
• 10Y*: 13.31%

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

BRGKX vs. BASMX - Expense Ratio Comparison

BRGKX has a 0.06% expense ratio, which is lower than BASMX's 0.33% expense ratio.

BASMX

iShares Total U.S. Stock Market Index Fund Investor A Shares

BRGKX

iShares Russell 1000 Large-Cap Index Fund Class K

Return for Risk

BRGKX vs. BASMX — Risk / Return Rank

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

BRGKX

BRGKX Risk / Return Rank: 46
BRGKX Sharpe Ratio Rank: 39
BRGKX Sortino Ratio Rank: 42
BRGKX Omega Ratio Rank: 45
BRGKX Calmar Ratio Rank: 46
BRGKX Martin Ratio Rank: 60

BASMX

BASMX Risk / Return Rank: 47
BASMX Sharpe Ratio Rank: 39
BASMX Sortino Ratio Rank: 42
BASMX Omega Ratio Rank: 45
BASMX Calmar Ratio Rank: 46
BASMX Martin Ratio Rank: 60

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.

BRGKX vs. BASMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX). 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.

	BRGKX	BASMX	Difference
Sharpe ratio Return per unit of total volatility	0.95	0.96	-0.01
Sortino ratio Return per unit of downside risk	1.45	1.47	-0.02
Omega ratio Gain probability vs. loss probability	1.22	1.22	0.00
Calmar ratio Return relative to maximum drawdown	1.46	1.47	-0.01
Martin ratio Return relative to average drawdown	7.01	7.03	-0.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BRGKX vs. BASMX - Sharpe Ratio Comparison

The current BRGKX Sharpe Ratio is 0.95, which is comparable to the BASMX Sharpe Ratio of 0.96. The chart below compares the historical Sharpe Ratios of BRGKX and BASMX, 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

	BRGKX	BASMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.95	0.96	-0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.64	0.60	+0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.75	0.73	+0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.73	0.73	0.00

Correlation

The correlation between BRGKX and BASMX is 0.99, 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

BRGKX vs. BASMX - Dividend Comparison

BRGKX's dividend yield for the trailing twelve months is around 2.62%, more than BASMX's 0.89% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRGKX iShares Russell 1000 Large-Cap Index Fund Class K	2.62%	2.77%	1.38%	1.49%	1.82%	1.88%	1.51%	2.82%	2.46%	2.31%	3.94%	4.86%
BASMX iShares Total U.S. Stock Market Index Fund Investor A Shares	0.89%	0.86%	0.99%	1.19%	1.33%	1.33%	1.20%	1.90%	2.18%	1.93%	1.37%	0.00%

Drawdowns

BRGKX vs. BASMX - Drawdown Comparison

The maximum BRGKX drawdown since its inception was -34.58%, roughly equal to the maximum BASMX drawdown of -34.95%. Use the drawdown chart below to compare losses from any high point for BRGKX and BASMX.

Drawdown Indicators

	BRGKX	BASMX	Difference
Max Drawdown Largest peak-to-trough decline	-34.58%	-34.95%	+0.37%
Max Drawdown (1Y) Largest decline over 1 year	-12.30%	-12.39%	+0.09%
Max Drawdown (5Y) Largest decline over 5 years	-25.13%	-25.12%	-0.01%
Max Drawdown (10Y) Largest decline over 10 years	-34.58%	-34.95%	+0.37%
Current Drawdown Current decline from peak	-6.44%	-6.24%	-0.20%
Average Drawdown Average peak-to-trough decline	-4.09%	-4.65%	+0.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.56%	2.59%	-0.03%

Volatility

BRGKX vs. BASMX - Volatility Comparison

iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX) have volatilities of 5.23% and 5.47%, 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

	BRGKX	BASMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.23%	5.47%	-0.24%
Volatility (6M) Calculated over the trailing 6-month period	9.54%	9.73%	-0.19%
Volatility (1Y) Calculated over the trailing 1-year period	18.41%	18.57%	-0.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.18%	17.39%	-0.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.20%	18.39%	-0.19%