ACM vs. XLK

Last updated Jun 24, 2026

ACM (AECOM) 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, ACM returned 8.85%/yr vs 25.48%/yr for XLK. A 0.51 correlation means they provide meaningful diversification when combined.

Performance

ACM vs. XLK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AECOM (ACM) 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, ACM achieves a -27.05% return, which is significantly lower than XLK's 28.25% return. Over the past 10 years, ACM has underperformed XLK with an annualized return of 8.85%, while XLK has yielded a comparatively higher 25.48% annualized return.

ACM

• 1D: 1.78%
• 1M: -4.12%
• YTD: -27.05%
• 6M: -28.87%
• 1Y: -37.39%
• 3Y*: -5.74%
• 5Y*: 2.47%
• 10Y*: 8.85%

XLK

• 1D: -4.14%
• 1M: 2.23%
• YTD: 28.25%
• 6M: 26.51%
• 1Y: 52.47%
• 3Y*: 30.61%
• 5Y*: 21.34%
• 10Y*: 25.48%

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

ACM vs. XLK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACM AECOM	-27.05%	-9.91%	16.67%	9.77%	10.72%	55.38%	15.42%	62.75%	-28.67%	2.17%
XLK State Street Technology Select Sector SPDR ETF	28.25%	24.61%	21.63%	56.02%	-27.73%	34.74%	43.62%	49.86%	-1.68%	34.26%

Correlation

The correlation between ACM and XLK is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (3Y) Calculated over the trailing 3-year period	0.39
Correlation (5Y) Calculated over the trailing 5-year period	0.46
Correlation (10Y) Calculated over the trailing 10-year period	0.44
Correlation (All Time) Calculated using the full available price history since May 10, 2007	0.51

Over the past year, the correlation between ACM and XLK has dropped to 0.29 - well below their long-term average of 0.51, suggesting their price drivers have been diverging.

Return for Risk

ACM vs. XLK — Risk / Return Rank

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

ACM

ACM Risk / Return Rank: 7
ACM Sharpe Ratio Rank: 3
ACM Sortino Ratio Rank: 6
ACM Omega Ratio Rank: 5
ACM Calmar Ratio Rank: 13
ACM Martin Ratio Rank: 8

XLK

XLK Risk / Return Rank: 66
XLK Sharpe Ratio Rank: 73
XLK Sortino Ratio Rank: 61
XLK Omega Ratio Rank: 64
XLK Calmar Ratio Rank: 68
XLK Martin Ratio Rank: 61

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.

ACM vs. XLK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AECOM (ACM) 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.

	ACM	XLK	Difference
Sharpe ratio: Return per unit of total volatility	-1.16	2.25	-3.41
Sortino ratio: Return per unit of downside risk	-1.54	2.77	-4.31
Omega ratio: Gain probability vs. loss probability	0.78	1.38	-0.60
Calmar ratio: Return relative to maximum drawdown	-0.76	3.31	-4.07
Martin ratio: Return relative to average drawdown	-1.42	10.56	-11.98

ACM vs. XLK - Sharpe Ratio Comparison

The current ACM Sharpe Ratio is -1.16, which is lower than the XLK Sharpe Ratio of 2.25. The chart below compares the historical Sharpe Ratios of ACM 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

ACM vs. XLK - Drawdown Comparison

The maximum ACM drawdown since its inception was -59.97%, smaller than the maximum XLK drawdown of -82.05%. Use the drawdown chart below to compare losses from any high point for ACM and XLK.

Drawdown Indicators

	ACM	XLK	Difference
Max Drawdown Largest peak-to-trough decline	-59.97%	-82.05%	+22.08%
Max Drawdown (1Y) Largest decline over 1 year	-49.15%	-15.92%	-33.23%
Max Drawdown (3Y) Largest decline over 3 years	-49.15%	-25.66%	-23.49%
Max Drawdown (5Y) Largest decline over 5 years	-49.15%	-33.56%	-15.59%
Max Drawdown (10Y) Largest decline over 10 years	-54.12%	-33.56%	-20.56%
Current Drawdown Current decline from peak	-48.24%	-6.96%	-41.28%
Average Drawdown Average peak-to-trough decline	-18.52%	-34.90%	+16.38%
Ulcer Index Depth and duration of drawdowns from previous peaks	26.33%	4.98%	+21.35%

Volatility

ACM vs. XLK - Volatility Comparison

The current volatility for AECOM (ACM) is 8.76%, while State Street Technology Select Sector SPDR ETF (XLK) has a volatility of 12.51%. This indicates that ACM 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.

Volatility by Period

	ACM	XLK	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.76%	12.51%	-3.75%
Volatility (6M) Calculated over the trailing 6-month period	26.49%	19.70%	+6.79%
Volatility (1Y) Calculated over the trailing 1-year period	32.33%	23.48%	+8.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.71%	25.37%	+1.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.04%	24.71%	+6.33%

Dividends

ACM vs. XLK - Dividend Comparison

ACM's dividend yield for the trailing twelve months is around 1.65%, more than XLK's 0.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACM AECOM	1.65%	1.09%	0.82%	0.78%	0.71%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
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

Can I hold both ACM and XLK in my portfolio?

ACM and XLK have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACM or XLK?

XLK has higher volatility (12.51%) compared to ACM (8.76%). In terms of maximum drawdown, ACM dropped -59.97% vs XLK's -82.05%.

Which has better risk-adjusted returns?

XLK currently has the higher Sharpe Ratio (2.25 vs -1.16), 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.