NGG vs. XLK
NGG (National Grid plc) is a stock, while XLK (State Street Technology Select Sector SPDR ETF) is Technology Equities fund tracking the S&P Technology Select Sector Daily Capped 35/20 Index. Over the past 10 years, NGG returned 8.04%/yr vs 25.76%/yr for XLK. At a 0.28 correlation, their price movements are largely independent.
Performance
NGG vs. XLK - Performance Comparison
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Returns By Period
In the year-to-date period, NGG achieves a 10.68% return, which is significantly lower than XLK's 28.51% return. Over the past 10 years, NGG has underperformed XLK with an annualized return of 8.04%, while XLK has yielded a comparatively higher 25.76% annualized return.
NGG
- 1D
- 0.71%
- 1M
- -2.36%
- YTD
- 10.68%
- 6M
- 10.48%
- 1Y
- 18.58%
- 3Y*
- 15.31%
- 5Y*
- 11.90%
- 10Y*
- 8.04%
XLK
- 1D
- 0.83%
- 1M
- -0.19%
- YTD
- 28.51%
- 6M
- 26.47%
- 1Y
- 48.82%
- 3Y*
- 31.01%
- 5Y*
- 21.42%
- 10Y*
- 25.76%
NGG vs. XLK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
NGG National Grid plc | 10.68% | 35.88% | -1.26% | 18.82% | -12.68% | 29.02% | -0.75% | 38.53% | -13.76% | 4.94% |
XLK State Street Technology Select Sector SPDR ETF | 28.51% | 24.61% | 21.63% | 56.02% | -27.73% | 34.74% | 43.62% | 49.86% | -1.68% | 34.26% |
Correlation
The correlation between NGG and XLK is -0.05, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.05 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.02 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.13 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.18 |
Correlation (All Time) Calculated using the full available price history since Jan 2, 2001 | 0.28 |
The correlation between NGG and XLK shifts across timeframes, from -0.05 (1 year) to 0.28 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
NGG vs. XLK — Risk / Return Rank
NGG
XLK
NGG vs. XLK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for National Grid plc (NGG) 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.
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.
| NGG | XLK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.23 | ||
| Sortino ratioReturn per unit of downside risk | -1.41 | ||
| Omega ratioGain probability vs. loss probability | 1.17 | 1.35 | -0.18 |
| Calmar ratioReturn relative to maximum drawdown | 1.32 | 3.08 | -1.76 |
| Martin ratioReturn relative to average drawdown | 3.36 | 9.75 | -6.39 |
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Drawdowns
NGG vs. XLK - Drawdown Comparison
The maximum NGG drawdown since its inception was -54.85%, smaller than the maximum XLK drawdown of -82.05%. Use the drawdown chart below to compare losses from any high point for NGG and XLK.
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Drawdown Indicators
| NGG | XLK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -54.85% | -82.05% | +27.20% |
Max Drawdown (1Y)Largest decline over 1 year | -14.15% | -15.92% | +1.77% |
Max Drawdown (3Y)Largest decline over 3 years | -20.76% | -25.66% | +4.90% |
Max Drawdown (5Y)Largest decline over 5 years | -39.20% | -33.56% | -5.64% |
Max Drawdown (10Y)Largest decline over 10 years | -39.20% | -33.56% | -5.64% |
Current DrawdownCurrent decline from peak | -8.85% | -6.77% | -2.08% |
Average DrawdownAverage peak-to-trough decline | -13.40% | -34.89% | +21.49% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.55% | 5.02% | +0.53% |
Volatility
NGG vs. XLK - Volatility Comparison
The current volatility for National Grid plc (NGG) is 6.25%, while State Street Technology Select Sector SPDR ETF (XLK) has a volatility of 12.25%. This indicates that NGG experiences smaller price fluctuations and is considered to be less risky 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
| NGG | XLK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.25% | 12.25% | -6.00% |
Volatility (6M)Calculated over the trailing 6-month period | 17.59% | 19.63% | -2.04% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.51% | 23.42% | -1.91% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.15% | 25.37% | -3.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.00% | 24.71% | -1.71% |
Dividends
NGG vs. XLK - Dividend Comparison
NGG's dividend yield for the trailing twelve months is around 3.88%, more than XLK's 0.43% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
NGG National Grid plc | 3.88% | 4.03% | 11.81% | 5.20% | 5.18% | 4.75% | 5.32% | 4.94% | 6.51% | 14.95% | 5.07% | 4.73% |
XLK State Street Technology Select Sector SPDR ETF | 0.43% | 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
NGG and XLK have a correlation of -0.05, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
XLK has higher volatility (12.25%) compared to NGG (6.25%). In terms of maximum drawdown, NGG dropped -54.85% vs XLK's -82.05%.
XLK currently has the higher Sharpe Ratio (2.09 vs 0.87), 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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