SPOK vs. SPY
SPOK (Spok Holdings, Inc.) is a stock, while SPY (State Street SPDR S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SPOK returned 1.81%/yr vs 15.07%/yr for SPY. Their 0.36 correlation means their historical movements had little consistent relationship.
Performance
SPOK vs. SPY - Performance Comparison
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Returns By Period
In the year-to-date period, SPOK achieves a -12.62% return, which is significantly lower than SPY's 10.13% return. Over the past 10 years, SPOK has underperformed SPY with an annualized return of 1.81%, while SPY has yielded a comparatively higher 15.07% annualized return.
SPOK
- 1D
- 1.40%
- 1M
- 3.91%
- 6M
- -16.30%
- YTD
- -12.62%
- 1Y
- -35.13%
- 3Y*
- 0.07%
- 5Y*
- 16.79%
- 10Y*
- 1.81%
- ALL TIME*
- 2.81%
SPY
- 1D
- 0.72%
- 1M
- 0.30%
- 6M
- 8.53%
- YTD
- 10.13%
- 1Y
- 21.49%
- 3Y*
- 19.32%
- 5Y*
- 12.76%
- 10Y*
- 15.07%
- ALL TIME*
- 10.79%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $1.53M | $1.52M | $1.83M | |
| $37.27B | $35.99B | $39.23B |
SPOK vs. SPY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPOK Spok Holdings, Inc. | -12.62% | -10.96% | 12.06% | 107.98% | 2.88% | -11.89% | -4.22% | -4.21% | -12.37% | -22.32% |
SPY State Street SPDR S&P 500 ETF | 10.13% | 17.72% | 24.89% | 26.18% | -18.18% | 28.73% | 18.33% | 31.22% | -4.57% | 21.71% |
Correlation
The correlation between SPOK and SPY is 0.10, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.10 |
Correlation (3Y) Balances recent behavior with more history. | 0.26 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.26 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.28 |
Correlation (All Time) Calculated using the full available price history since Nov 17, 2004 | 0.36 |
Over the past year, the correlation between SPOK and SPY has dropped to 0.10 - well below their long-term average of 0.36, suggesting their price drivers have been diverging.
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Return for Risk
SPOK vs. SPY — Risk / Return Rank
SPOK
SPY
SPOK vs. SPY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Spok Holdings, Inc. (SPOK) and State Street SPDR S&P 500 ETF (SPY). 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.
| SPOK | SPY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.71 | ||
| Sortino ratioReturn per unit of downside risk | -3.63 | ||
| Omega ratioGain probability vs. loss probability | 0.78 | 1.27 | -0.49 |
| Calmar ratioReturn relative to maximum drawdown | -0.87 | 2.20 | -3.07 |
| Martin ratioReturn relative to average drawdown | -1.21 | 9.40 | -10.61 |
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Drawdowns
SPOK vs. SPY - Drawdown Comparison
The maximum SPOK drawdown since its inception was -73.90%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for SPOK and SPY.
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Drawdown Indicators
| SPOK | SPY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -73.90% | -55.19% | -18.71% |
Max Drawdown (1Y)Largest decline over 1 year | -39.88% | -8.88% | -31.00% |
Max Drawdown (3Y)Largest decline over 3 years | -39.88% | -18.76% | -21.12% |
Max Drawdown (5Y)Largest decline over 5 years | -39.88% | -24.50% | -15.38% |
Max Drawdown (10Y)Largest decline over 10 years | -62.99% | -33.72% | -29.27% |
Current DrawdownCurrent decline from peak | -36.00% | -1.40% | -34.60% |
Average DrawdownAverage peak-to-trough decline | -28.16% | -9.01% | -19.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 28.54% | 2.08% | +26.46% |
Volatility
SPOK vs. SPY - Volatility Comparison
Spok Holdings, Inc. (SPOK) has a higher volatility of 4.85% compared to State Street SPDR S&P 500 ETF (SPY) at 3.58%. This indicates that SPOK's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPOK | SPY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.85% | 3.58% | +1.27% |
Volatility (6M)Calculated over the trailing 6-month period | 22.10% | 10.14% | +11.96% |
Volatility (1Y)Calculated over the trailing 1-year period | 30.05% | 12.89% | +17.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 34.06% | 17.18% | +16.88% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 36.14% | 17.95% | +18.19% |
Dividends
SPOK vs. SPY - Dividend Comparison
SPOK's dividend yield for the trailing twelve months is around 11.47%, more than SPY's 1.01% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPOK Spok Holdings, Inc. | 11.47% | 9.48% | 7.79% | 8.07% | 15.26% | 5.36% | 4.49% | 4.09% | 3.77% | 3.19% | 3.61% | 3.41% |
SPY State Street SPDR S&P 500 ETF | 1.01% | 1.07% | 1.21% | 1.40% | 1.65% | 1.20% | 1.52% | 1.75% | 2.04% | 1.80% | 2.03% | 2.06% |
Frequently Asked Questions
SPOK and SPY have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SPOK has higher volatility (4.85%) compared to SPY (3.58%). In terms of maximum drawdown, SPOK dropped -73.90% vs SPY's -55.19%.
SPY currently has the higher Sharpe Ratio (1.52 vs -1.19), 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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