BULD vs. XLK
BULD (Pacer BlueStar Engineering the Future ETF) and XLK (State Street Technology Select Sector SPDR ETF) are both Technology Equities funds - BULD tracks the BlueStar Robotics & 3D Printing Index while XLK tracks the S&P Technology Select Sector Daily Capped 35/20 Index. Both are passively managed. Over the past 3 years, BULD returned 18.64%/yr vs 33.90%/yr for XLK. A 0.78 correlation means they provide meaningful diversification when combined. BULD charges 0.60%/yr vs 0.08%/yr for XLK.
Performance
BULD vs. XLK - Performance Comparison
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Returns By Period
In the year-to-date period, BULD achieves a 34.29% return, which is significantly lower than XLK's 36.47% return.
BULD
- 1D
- -0.38%
- 1M
- 14.07%
- YTD
- 34.29%
- 6M
- 30.65%
- 1Y
- 64.78%
- 3Y*
- 18.64%
- 5Y*
- —
- 10Y*
- —
XLK
- 1D
- -1.00%
- 1M
- 21.09%
- YTD
- 36.47%
- 6M
- 35.71%
- 1Y
- 66.93%
- 3Y*
- 33.90%
- 5Y*
- 23.83%
- 10Y*
- 25.84%
BULD vs. XLK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
BULD Pacer BlueStar Engineering the Future ETF | 34.29% | 23.20% | -3.93% | 28.27% | -12.41% |
XLK State Street Technology Select Sector SPDR ETF | 36.47% | 24.61% | 21.63% | 56.02% | -11.49% |
Correlation
The correlation between BULD and XLK is 0.76, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.76 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.75 |
Correlation (All Time) Calculated using the full available price history since May 6, 2022 | 0.78 |
The correlation between BULD and XLK has been stable across timeframes, ranging from 0.75 to 0.78 - a consistent structural relationship.
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Return for Risk
BULD vs. XLK — Risk / Return Rank
BULD
XLK
BULD vs. XLK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Pacer BlueStar Engineering the Future ETF (BULD) and State Street Technology Select Sector SPDR ETF (XLK). 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.
| BULD | XLK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.90 | ||
| Sortino ratioReturn per unit of downside risk | -0.76 | ||
| Omega ratioGain probability vs. loss probability | 1.37 | 1.52 | -0.15 |
| Calmar ratioReturn relative to maximum drawdown | 4.21 | 4.22 | -0.02 |
| Martin ratioReturn relative to average drawdown | 13.30 | 14.16 | -0.85 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| BULD | XLK | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.34 | 3.24 | -0.90 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.96 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 1.06 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.55 | 0.42 | +0.14 |
Drawdowns
BULD vs. XLK - Drawdown Comparison
The maximum BULD drawdown since its inception was -27.64%, smaller than the maximum XLK drawdown of -82.05%. Use the drawdown chart below to compare losses from any high point for BULD and XLK.
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Drawdown Indicators
| BULD | XLK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -27.64% | -82.05% | +54.41% |
Max Drawdown (1Y)Largest decline over 1 year | -15.48% | -15.92% | +0.44% |
Max Drawdown (3Y)Largest decline over 3 years | -27.64% | -25.66% | -1.98% |
Max Drawdown (5Y)Largest decline over 5 years | — | -33.56% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.56% | — |
Current DrawdownCurrent decline from peak | -0.38% | -1.00% | +0.62% |
Average DrawdownAverage peak-to-trough decline | -8.30% | -34.96% | +26.66% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.88% | 4.74% | +0.14% |
Volatility
BULD vs. XLK - Volatility Comparison
Pacer BlueStar Engineering the Future ETF (BULD) has a higher volatility of 8.50% compared to State Street Technology Select Sector SPDR ETF (XLK) at 6.98%. This indicates that BULD's price experiences larger fluctuations and is considered to be riskier than XLK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BULD | XLK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.50% | 6.98% | +1.52% |
Volatility (6M)Calculated over the trailing 6-month period | 21.34% | 16.68% | +4.66% |
Volatility (1Y)Calculated over the trailing 1-year period | 27.85% | 20.82% | +7.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 27.73% | 24.90% | +2.83% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 27.73% | 24.49% | +3.24% |
BULD vs. XLK - Expense Ratio Comparison
BULD has a 0.60% expense ratio, which is higher than XLK's 0.08% expense ratio.
Dividends
BULD vs. XLK - Dividend Comparison
BULD's dividend yield for the trailing twelve months is around 0.92%, more than XLK's 0.39% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BULD Pacer BlueStar Engineering the Future ETF | 0.92% | 1.24% | 0.18% | 0.21% | 0.08% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
XLK State Street Technology Select Sector SPDR ETF | 0.39% | 0.54% | 0.66% | 0.76% | 1.04% | 0.65% | 0.92% | 1.16% | 1.60% | 1.37% | 1.74% | 1.79% |
Frequently Asked Questions
BULD and XLK have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BULD has higher volatility (8.50%) compared to XLK (6.98%). In terms of maximum drawdown, BULD dropped -27.64% vs XLK's -82.05%.
On 3-year performance, XLK leads with 33.90% vs 18.64% for BULD. On fees, XLK is cheaper at 0.08% per year. On volatility, XLK has been the lower-risk option at 6.98%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, XLK has performed better with a 33.90% return vs 18.64%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
XLK is cheaper with a 0.08% expense ratio, compared with 0.60% for BULD.
BULD has the higher dividend yield at 0.92%, compared with 0.39% for XLK.
BULD tracks BlueStar Robotics & 3D Printing Index, while XLK tracks S&P Technology Select Sector Daily Capped 35/20 Index. They also come from different issuers: Pacer and State Street. Their fees differ too: 0.60% for BULD and 0.08% for XLK.
XLK currently has the higher Sharpe Ratio (3.24 vs 2.34), 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.
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