POOL vs. XLK

Last updated Aug 4, 2026

POOL (Pool Corporation) 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, POOL returned 8.26%/yr vs 23.73%/yr for XLK. Their 0.43 correlation means their historical movements had little consistent relationship.

Performance

POOL vs. XLK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Pool Corporation (POOL) and State Street Technology Select Sector SPDR ETF (XLK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, POOL achieves a -13.35% return, which is significantly lower than XLK's 23.97% return. Over the past 10 years, POOL has underperformed XLK with an annualized return of 8.26%, while XLK has yielded a comparatively higher 23.73% annualized return.

POOL

• 1D: 5.31%
• 1M: -10.89%
• 6M: -21.84%
• YTD: -13.35%
• 1Y: -35.22%
• 3Y*: -18.66%
• 5Y*: -15.53%
• 10Y*: 8.26%
• ALL TIME*: 20.28%

XLK

• 1D: 1.53%
• 1M: -1.41%
• 6M: 22.86%
• YTD: 23.97%
• 1Y: 39.24%
• 3Y*: 28.50%
• 5Y*: 19.12%
• 10Y*: 23.73%
• ALL TIME*: 10.26%

*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)
POOL Pool Corporation	$211.72M	$178.65M	$198.39M
XLK State Street Technology Select Sector SPDR ETF	$1.65B	$1.63B	$2.23B

POOL vs. XLK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
POOL Pool Corporation	-13.35%	-31.81%	-13.39%	33.51%	-46.03%	52.98%	76.95%	44.50%	15.97%	25.78%
XLK State Street Technology Select Sector SPDR ETF	23.97%	24.61%	21.63%	56.02%	-27.73%	34.74%	43.62%	49.86%	-1.68%	34.26%

Correlation

The correlation between POOL and XLK is 0.07, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.07
Correlation (3Y) Balances recent behavior with more history.	0.24
Correlation (5Y) Shows whether the relationship held over a longer period.	0.41
Correlation (10Y) Provides a long-term view across more market conditions.	0.41
Correlation (All Time) Calculated using the full available price history since Dec 22, 1998	0.43

Over the past year, the correlation between POOL and XLK has dropped to 0.07 - well below their long-term average of 0.43, suggesting their price drivers have been diverging.

Return for Risk

POOL vs. XLK — Risk / Return Rank

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

POOL

POOL Risk / Return Rank: 10
POOL Sharpe Ratio Rank: 4
POOL Sortino Ratio Rank: 8
POOL Omega Ratio Rank: 8
POOL Calmar Ratio Rank: 14
POOL Martin Ratio Rank: 15

XLK

XLK Risk / Return Rank: 62
XLK Sharpe Ratio Rank: 66
XLK Sortino Ratio Rank: 60
XLK Omega Ratio Rank: 60
XLK Calmar Ratio Rank: 70
XLK Martin Ratio Rank: 55

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.

POOL vs. XLK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Pool Corporation (POOL) 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.

	POOL	XLK	Difference
Sharpe ratio: Return per unit of total volatility	-1.00	1.55	-2.55
Sortino ratio: Return per unit of downside risk	-1.39	2.08	-3.47
Omega ratio: Gain probability vs. loss probability	0.83	1.26	-0.43
Calmar ratio: Return relative to maximum drawdown	-0.75	2.48	-3.23
Martin ratio: Return relative to average drawdown	-1.19	6.68	-7.87

POOL vs. XLK - Sharpe Ratio Comparison

The current POOL Sharpe Ratio is -1.00, which is lower than the XLK Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of POOL and XLK, 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

POOL vs. XLK - Drawdown Comparison

The maximum POOL drawdown since its inception was -75.71%, smaller than the maximum XLK drawdown of -82.05%. Use the drawdown chart below to compare losses from any high point for POOL and XLK.

Drawdown Indicators

	POOL	XLK	Difference
Max Drawdown Largest peak-to-trough decline	-75.71%	-82.05%	+6.34%
Max Drawdown (1Y) Largest decline over 1 year	-46.86%	-15.92%	-30.94%
Max Drawdown (3Y) Largest decline over 3 years	-56.77%	-25.66%	-31.11%
Max Drawdown (5Y) Largest decline over 5 years	-67.85%	-33.56%	-34.29%
Max Drawdown (10Y) Largest decline over 10 years	-67.85%	-33.56%	-34.29%
Current Drawdown Current decline from peak	-63.88%	-10.07%	-53.81%
Average Drawdown Average peak-to-trough decline	-18.56%	-34.80%	+16.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	29.68%	5.89%	+23.79%

Volatility

POOL vs. XLK - Volatility Comparison

Pool Corporation (POOL) has a higher volatility of 12.65% compared to State Street Technology Select Sector SPDR ETF (XLK) at 9.37%. This indicates that POOL'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.

Volatility by Period

	POOL	XLK	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.65%	9.37%	+3.28%
Volatility (6M) Calculated over the trailing 6-month period	29.58%	21.74%	+7.84%
Volatility (1Y) Calculated over the trailing 1-year period	35.33%	25.56%	+9.77%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.55%	25.77%	+8.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.91%	24.91%	+7.00%

Dividends

POOL vs. XLK - Dividend Comparison

POOL's dividend yield for the trailing twelve months is around 2.58%, more than XLK's 0.45% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
POOL Pool Corporation	2.58%	2.16%	1.38%	1.08%	1.26%	0.53%	0.61%	0.99%	1.16%	1.10%	1.14%	1.24%
XLK State Street Technology Select Sector SPDR ETF	0.45%	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

Can I hold both POOL and XLK in my portfolio?

POOL and XLK have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, POOL or XLK?

POOL has higher volatility (12.65%) compared to XLK (9.37%). In terms of maximum drawdown, POOL dropped -75.71% vs XLK's -82.05%.

Which has better risk-adjusted returns?

XLK currently has the higher Sharpe Ratio (1.55 vs -1.00), 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.