IWMW vs. TLT

Last updated Apr 1, 2026

Compare and contrast key facts about iShares Russell 2000 BuyWrite ETF (IWMW) and iShares 20+ Year Treasury Bond ETF (TLT).

IWMW and TLT are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. IWMW is a passively managed fund by iShares that tracks the performance of the Cboe FTSE Russell IWM 2% OTM BuyWrite Index - Benchmark TR Gross. It was launched on Mar 14, 2024. TLT is a passively managed fund by iShares that tracks the performance of the ICE U.S. Treasury 20+ Year Bond Index. It was launched on Jul 22, 2002. Both IWMW and TLT 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

IWMW vs. TLT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell 2000 BuyWrite ETF (IWMW) and iShares 20+ Year Treasury Bond ETF (TLT). The values are adjusted to include any dividend payments, if applicable.

IWMW vs. TLT - Yearly Performance Comparison

	2026 (YTD)	2025	2024
IWMW iShares Russell 2000 BuyWrite ETF	-0.04%	7.82%	6.09%
TLT iShares 20+ Year Treasury Bond ETF	0.17%	4.25%	-2.80%

Returns By Period

In the year-to-date period, IWMW achieves a -0.04% return, which is significantly lower than TLT's 0.17% return.

IWMW

• 1D: 2.35%
• 1M: -3.58%
• YTD: -0.04%
• 6M: 1.69%
• 1Y: 13.98%
• 3Y*: —
• 5Y*: —
• 10Y*: —

TLT

• 1D: -0.10%
• 1M: -4.23%
• YTD: 0.17%
• 6M: -0.87%
• 1Y: -0.49%
• 3Y*: -2.78%
• 5Y*: -5.85%
• 10Y*: -1.38%

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

IWMW vs. TLT - Expense Ratio Comparison

IWMW has a 0.39% expense ratio, which is higher than TLT's 0.15% expense ratio.

IWMW

iShares Russell 2000 BuyWrite ETF

TLT

iShares 20+ Year Treasury Bond ETF

Return for Risk

IWMW vs. TLT — Risk / Return Rank

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

IWMW

IWMW Risk / Return Rank: 46
IWMW Sharpe Ratio Rank: 43
IWMW Sortino Ratio Rank: 45
IWMW Omega Ratio Rank: 53
IWMW Calmar Ratio Rank: 40
IWMW Martin Ratio Rank: 48

TLT

TLT Risk / Return Rank: 12
TLT Sharpe Ratio Rank: 11
TLT Sortino Ratio Rank: 10
TLT Omega Ratio Rank: 10
TLT Calmar Ratio Rank: 14
TLT Martin Ratio Rank: 13

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.

IWMW vs. TLT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell 2000 BuyWrite ETF (IWMW) and iShares 20+ Year Treasury Bond ETF (TLT). 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.

	IWMW	TLT	Difference
Sharpe ratio Return per unit of total volatility	0.76	-0.04	+0.81
Sortino ratio Return per unit of downside risk	1.17	0.02	+1.15
Omega ratio Gain probability vs. loss probability	1.19	1.00	+0.19
Calmar ratio Return relative to maximum drawdown	0.98	0.05	+0.93
Martin ratio Return relative to average drawdown	4.44	0.11	+4.33
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IWMW vs. TLT - Sharpe Ratio Comparison

The current IWMW Sharpe Ratio is 0.76, which is higher than the TLT Sharpe Ratio of -0.04. The chart below compares the historical Sharpe Ratios of IWMW and TLT, 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

	IWMW	TLT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.76	-0.04	+0.81
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.37	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	-0.09	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	0.26	+0.15

Correlation

The correlation between IWMW and TLT is 0.15, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

IWMW vs. TLT - Dividend Comparison

IWMW's dividend yield for the trailing twelve months is around 22.56%, more than TLT's 4.49% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IWMW iShares Russell 2000 BuyWrite ETF	22.56%	20.98%	17.73%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
TLT iShares 20+ Year Treasury Bond ETF	4.49%	4.43%	4.30%	3.38%	2.67%	1.50%	1.50%	2.27%	2.63%	2.43%	2.60%	2.61%

Drawdowns

IWMW vs. TLT - Drawdown Comparison

The maximum IWMW drawdown since its inception was -21.82%, smaller than the maximum TLT drawdown of -48.35%. Use the drawdown chart below to compare losses from any high point for IWMW and TLT.

Drawdown Indicators

	IWMW	TLT	Difference
Max Drawdown Largest peak-to-trough decline	-21.82%	-48.35%	+26.53%
Max Drawdown (1Y) Largest decline over 1 year	-13.89%	-9.23%	-4.66%
Max Drawdown (5Y) Largest decline over 5 years	—	-43.70%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-48.35%	—
Current Drawdown Current decline from peak	-4.76%	-40.17%	+35.41%
Average Drawdown Average peak-to-trough decline	-4.10%	-13.62%	+9.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.06%	4.38%	-1.32%

Volatility

IWMW vs. TLT - Volatility Comparison

iShares Russell 2000 BuyWrite ETF (IWMW) has a higher volatility of 5.65% compared to iShares 20+ Year Treasury Bond ETF (TLT) at 3.71%. This indicates that IWMW's price experiences larger fluctuations and is considered to be riskier than TLT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IWMW	TLT	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.65%	3.71%	+1.94%
Volatility (6M) Calculated over the trailing 6-month period	10.23%	6.61%	+3.62%
Volatility (1Y) Calculated over the trailing 1-year period	18.38%	11.44%	+6.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.57%	15.90%	+0.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.57%	14.93%	+1.64%