IWP vs. TBUX

Last updated Jun 9, 2026

IWP (iShares Russell Mid-Cap Growth ETF) and TBUX (T. Rowe Price Ultra Short-Term Bond ETF) are both exchange-traded funds - IWP is a Mid Cap Growth Equities fund tracking the Russell Midcap Growth Index, while TBUX is a Ultrashort Bond fund actively managed by T. Rowe Price. IWP is passively managed, while TBUX is actively managed. Over the past 3 years, IWP returned 15.01%/yr vs 5.85%/yr for TBUX. At a 0.11 correlation, their price movements are largely independent. IWP charges 0.23%/yr vs 0.17%/yr for TBUX.

Performance

IWP vs. TBUX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell Mid-Cap Growth ETF (IWP) and T. Rowe Price Ultra Short-Term Bond ETF (TBUX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with IWP having a 1.66% return and TBUX slightly higher at 1.69%.

IWP

• 1D: -0.06%
• 1M: 1.28%
• YTD: 1.66%
• 6M: 0.18%
• 1Y: 2.82%
• 3Y*: 15.01%
• 5Y*: 5.99%
• 10Y*: 12.22%

TBUX

• 1D: 0.06%
• 1M: 0.29%
• YTD: 1.69%
• 6M: 2.08%
• 1Y: 4.88%
• 3Y*: 5.85%
• 5Y*: —
• 10Y*: —

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

IWP vs. TBUX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
IWP iShares Russell Mid-Cap Growth ETF	1.66%	8.45%	21.86%	25.70%	-26.90%	2.35%
TBUX T. Rowe Price Ultra Short-Term Bond ETF	1.69%	5.37%	6.38%	6.39%	-0.13%	-0.22%

Correlation

The correlation between IWP and TBUX is 0.21, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.21
Correlation (3Y) Calculated over the trailing 3-year period	0.11
Correlation (All Time) Calculated using the full available price history since Sep 30, 2021	0.11

The correlation between IWP and TBUX shifts across timeframes, from 0.11 (3 years) to 0.21 (1 year), reflecting how their relationship changes across market environments.

IWP vs. TBUX - Sectors Allocation Comparison

Sectors	IWP	TBUX
Industrials	24.2%	3.5%
Consumer Cyclical	21.1%	14.3%
Technology	20.0%	52.7%
Healthcare	13.5%	5.0%
Financial Services	6.9%	0.5%
Communication Services	4.2%	15.2%
Energy	3.8%	0.6%
Utilities	2.9%	1.2%
Consumer Defensive	1.5%	5.5%
Real Estate	1.4%	0.2%
Basic Materials	0.4%	1.3%

Return for Risk

IWP vs. TBUX — Risk / Return Rank

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

IWP

IWP Risk / Return Rank: 12
IWP Sharpe Ratio Rank: 12
IWP Sortino Ratio Rank: 12
IWP Omega Ratio Rank: 11
IWP Calmar Ratio Rank: 12
IWP Martin Ratio Rank: 12

TBUX

TBUX Risk / Return Rank: 99
TBUX Sharpe Ratio Rank: 99
TBUX Sortino Ratio Rank: 99
TBUX Omega Ratio Rank: 99
TBUX Calmar Ratio Rank: 99
TBUX Martin Ratio Rank: 99

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.

IWP vs. TBUX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell Mid-Cap Growth ETF (IWP) and T. Rowe Price Ultra Short-Term Bond ETF (TBUX). 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.

	IWP	TBUX	Difference
Sharpe ratio: Return per unit of total volatility	0.17	7.27	-7.10
Sortino ratio: Return per unit of downside risk	0.36	14.70	-14.34
Omega ratio: Gain probability vs. loss probability	1.04	3.15	-2.11
Calmar ratio: Return relative to maximum drawdown	0.19	48.80	-48.61
Martin ratio: Return relative to average drawdown	0.56	185.24	-184.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IWP vs. TBUX - Sharpe Ratio Comparison

The current IWP Sharpe Ratio is 0.17, which is lower than the TBUX Sharpe Ratio of 7.27. The chart below compares the historical Sharpe Ratios of IWP and TBUX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	IWP	TBUX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.17	7.27	-7.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.57	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.42	3.88	-3.46

Drawdowns

IWP vs. TBUX - Drawdown Comparison

The maximum IWP drawdown since its inception was -56.92%, which is greater than TBUX's maximum drawdown of -1.79%. Use the drawdown chart below to compare losses from any high point for IWP and TBUX.

Drawdown Indicators

	IWP	TBUX	Difference
Max Drawdown Largest peak-to-trough decline	-56.92%	-1.79%	-55.13%
Max Drawdown (1Y) Largest decline over 1 year	-14.79%	-0.10%	-14.69%
Max Drawdown (3Y) Largest decline over 3 years	-25.20%	-0.33%	-24.87%
Max Drawdown (5Y) Largest decline over 5 years	-38.62%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-38.62%	—	—
Current Drawdown Current decline from peak	-4.08%	-0.04%	-4.04%
Average Drawdown Average peak-to-trough decline	-9.68%	-0.28%	-9.40%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.08%	0.03%	+5.05%

Volatility

IWP vs. TBUX - Volatility Comparison

iShares Russell Mid-Cap Growth ETF (IWP) has a higher volatility of 4.62% compared to T. Rowe Price Ultra Short-Term Bond ETF (TBUX) at 0.22%. This indicates that IWP's price experiences larger fluctuations and is considered to be riskier than TBUX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IWP	TBUX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.62%	0.22%	+4.40%
Volatility (6M) Calculated over the trailing 6-month period	12.93%	0.46%	+12.47%
Volatility (1Y) Calculated over the trailing 1-year period	16.71%	0.67%	+16.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.34%	1.07%	+21.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.70%	1.07%	+20.63%

IWP vs. TBUX - Expense Ratio Comparison

IWP has a 0.23% expense ratio, which is higher than TBUX's 0.17% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

IWP vs. TBUX - Dividend Comparison

IWP's dividend yield for the trailing twelve months is around 0.33%, less than TBUX's 4.48% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IWP iShares Russell Mid-Cap Growth ETF	0.33%	0.37%	0.40%	0.54%	0.77%	0.30%	0.38%	0.59%	1.02%	0.78%	1.16%	0.98%
TBUX T. Rowe Price Ultra Short-Term Bond ETF	4.48%	4.67%	5.39%	4.66%	2.58%	0.27%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both IWP and TBUX in my portfolio?

IWP and TBUX have a correlation of 0.21, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IWP or TBUX?

IWP has higher volatility (4.62%) compared to TBUX (0.22%). In terms of maximum drawdown, IWP dropped -56.92% vs TBUX's -1.79%.

Which ETF is better, IWP or TBUX?

On 3-year performance, IWP leads with 15.01% vs 5.85% for TBUX. On fees, TBUX is cheaper at 0.17% per year. On volatility, TBUX has been the lower-risk option at 0.22%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IWP or TBUX?

Over the 3-year period, IWP has performed better with a 15.01% return vs 5.85%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IWP or TBUX?

TBUX is cheaper with a 0.17% expense ratio, compared with 0.23% for IWP.

Which ETF pays a higher dividend yield, IWP or TBUX?

TBUX has the higher dividend yield at 4.48%, compared with 0.33% for IWP.

What is the main difference between IWP and TBUX?

IWP is categorized as Mid Cap Growth Equities, while TBUX is Ultrashort Bond. They also come from different issuers: iShares and T. Rowe Price. Their fees differ too: 0.23% for IWP and 0.17% for TBUX.

Which has better risk-adjusted returns?

TBUX currently has the higher Sharpe Ratio (7.27 vs 0.17), 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.