BKF vs. WNTR

Last updated Aug 4, 2026

BKF (iShares MSCI BRIC ETF) and WNTR (YieldMax MSTR Short Option Income Strategy ETF) are both exchange-traded funds - BKF is a Emerging Markets Equities fund tracking the MSCI BRIC Index, while WNTR is a Derivative Income fund actively managed by YieldMax. BKF is passively managed, while WNTR is actively managed. Over the past year, BKF returned 2.20% vs 106.92% for WNTR. Their -0.35 correlation means they have often moved in opposite directions in the past. BKF charges 0.69%/yr vs 1.00%/yr for WNTR.

Performance

BKF vs. WNTR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares MSCI BRIC ETF (BKF) and YieldMax MSTR Short Option Income Strategy ETF (WNTR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BKF achieves a -5.54% return, which is significantly lower than WNTR's 10.51% return.

BKF

• 1D: 0.32%
• 1M: 6.30%
• 6M: -8.32%
• YTD: -5.54%
• 1Y: 2.20%
• 3Y*: 6.64%
• 5Y*: -1.78%
• 10Y*: 4.35%
• ALL TIME*: 0.21%

WNTR

• 1D: -0.22%
• 1M: 7.89%
• 6M: 8.31%
• YTD: 10.51%
• 1Y: 106.92%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 47.29%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
BKF iShares MSCI BRIC ETF	$152.87K	$247.53K	$560.11K
WNTR YieldMax MSTR Short Option Income Strategy ETF	$3.92M	$3.66M	$3.95M

BKF vs. WNTR - Yearly Performance Comparison

	2026 (YTD)	2025
BKF iShares MSCI BRIC ETF	-5.54%	10.74%
WNTR YieldMax MSTR Short Option Income Strategy ETF	10.51%	52.78%

Correlation

The correlation between BKF and WNTR is -0.36, meaning they have often moved in opposite directions in the past. This relationship can weaken or reverse as market conditions change.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	-0.36
Correlation (All Time) Calculated using the full available price history since Mar 27, 2025	-0.35

Return for Risk

BKF vs. WNTR — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

BKF

BKF Risk / Return Rank: 13
BKF Sharpe Ratio Rank: 14
BKF Sortino Ratio Rank: 13
BKF Omega Ratio Rank: 13
BKF Calmar Ratio Rank: 13
BKF Martin Ratio Rank: 13

WNTR

WNTR Risk / Return Rank: 69
WNTR Sharpe Ratio Rank: 83
WNTR Sortino Ratio Rank: 67
WNTR Omega Ratio Rank: 71
WNTR Calmar Ratio Rank: 70
WNTR Martin Ratio Rank: 53

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

BKF vs. WNTR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI BRIC ETF (BKF) and YieldMax MSTR Short Option Income Strategy ETF (WNTR). 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.

	BKF	WNTR	Difference
Sharpe ratio: Return per unit of total volatility	0.14	1.97	-1.83
Sortino ratio: Return per unit of downside risk	0.31	2.27	-1.96
Omega ratio: Gain probability vs. loss probability	1.04	1.30	-0.27
Calmar ratio: Return relative to maximum drawdown	0.14	2.52	-2.38
Martin ratio: Return relative to average drawdown	0.30	6.38	-6.08

BKF vs. WNTR - Sharpe Ratio Comparison

The current BKF Sharpe Ratio is 0.14, which is lower than the WNTR Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of BKF and WNTR, 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

BKF vs. WNTR - Drawdown Comparison

The maximum BKF drawdown since its inception was -70.29%, which is greater than WNTR's maximum drawdown of -42.65%. Use the drawdown chart below to compare losses from any high point for BKF and WNTR.

Drawdown Indicators

	BKF	WNTR	Difference
Max Drawdown Largest peak-to-trough decline	-70.29%	-42.65%	-27.64%
Max Drawdown (1Y) Largest decline over 1 year	-15.45%	-42.65%	+27.20%
Max Drawdown (3Y) Largest decline over 3 years	-18.60%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-40.90%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-49.20%	—	—
Current Drawdown Current decline from peak	-23.50%	-9.84%	-13.66%
Average Drawdown Average peak-to-trough decline	-28.09%	-20.15%	-7.94%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.31%	16.83%	-9.52%

Volatility

BKF vs. WNTR - Volatility Comparison

The current volatility for iShares MSCI BRIC ETF (BKF) is 3.78%, while YieldMax MSTR Short Option Income Strategy ETF (WNTR) has a volatility of 13.00%. This indicates that BKF experiences smaller price fluctuations and is considered to be less risky than WNTR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BKF	WNTR	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.78%	13.00%	-9.22%
Volatility (6M) Calculated over the trailing 6-month period	12.65%	47.22%	-34.57%
Volatility (1Y) Calculated over the trailing 1-year period	16.02%	54.66%	-38.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.33%	53.34%	-32.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.68%	53.34%	-31.66%

BKF vs. WNTR - Expense Ratio Comparison

BKF has a 0.69% expense ratio, which is lower than WNTR's 1.00% expense ratio.

Dividends

BKF vs. WNTR - Dividend Comparison

BKF's dividend yield for the trailing twelve months is around 1.54%, less than WNTR's 107.26% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BKF iShares MSCI BRIC ETF	1.54%	1.79%	2.37%	1.68%	2.04%	2.93%	1.02%	1.66%	2.33%	1.51%	1.82%	3.15%
WNTR YieldMax MSTR Short Option Income Strategy ETF	107.26%	58.56%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BKF and WNTR in my portfolio?

BKF and WNTR have a correlation of -0.36, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BKF or WNTR?

WNTR has higher volatility (13.00%) compared to BKF (3.78%). In terms of maximum drawdown, BKF dropped -70.29% vs WNTR's -42.65%.

Which ETF is better, BKF or WNTR?

On 1-year performance, WNTR leads with 106.92% vs 2.20% for BKF. On fees, BKF is cheaper at 0.69% per year. On volatility, BKF has been the lower-risk option at 3.78%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BKF or WNTR?

Over the 1-year period, WNTR has performed better with a 106.92% return vs 2.20%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BKF or WNTR?

BKF is cheaper with a 0.69% expense ratio, compared with 1.00% for WNTR.

Which ETF pays a higher dividend yield, BKF or WNTR?

WNTR has the higher dividend yield at 107.26%, compared with 1.54% for BKF.

What is the main difference between BKF and WNTR?

BKF is categorized as Emerging Markets Equities, while WNTR is Derivative Income. They also come from different issuers: iShares and YieldMax. Their fees differ too: 0.69% for BKF and 1.00% for WNTR.

Which has better risk-adjusted returns?

WNTR currently has the higher Sharpe Ratio (1.97 vs 0.14), 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.