State Street SPDR S&P 600 TM Small Cap Growth ETF

SLYGAMEX · USD
107.86USD-0.76 (-0.70%)

State Street SPDR S&P 600 TM Small Cap Growth ETF (SLYG) Historical Volatility

SLYG 30-day historical volatility is 11%. This ranks in the 1th percentile of readings over the past year.

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Tracking SLYG historical volatility helps you see how much State Street SPDR S&P 600 TM Small Cap Growth ETF's stock price has actually moved over past periods, giving you a baseline to judge whether current option premiums are fair, cheap, or expensive. While implied volatility tells you what the market expects, State Street SPDR S&P 600 TM Small Cap Growth ETF's HV tells you what really happened. Use our scanner to monitor SLYG 30 day historical volatility alongside longer lookback windows and spot the moments when realized and implied diverge.

Historical volatility is the annualized standard deviation of an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The SLYG 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing State Street SPDR S&P 600 TM Small Cap Growth ETF's HV to its implied volatility reveals the volatility risk premium — when IV sits well above HV, option sellers tend to have an edge; when HV runs hot relative to IV, buyers may be underpaying for movement.

The State Street SPDR S&P 600 Small Cap Growth ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of The S&P SmallCap 600 Growth Index (the "Index")The Index includes stocks that exhibit the strongest growth characteristics based on: sales growth; earnings change to price; and momentum

Sizing a long premium trade, modeling a covered call, or hunting volatility arbitrage all come back to one question: how much has the stock actually moved? Our scanner puts State Street SPDR S&P 600 TM Small Cap Growth ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where SLYG HV is running hot, cold, or in line. Make the SLYG 30 day historical volatility — and every other window — work for your edge instead of against it.

IV vs HV
Implied Volatility (IV) vs Historical Volatility (HV) over the past month.

As of September 25, 2026

IV - HV Difference
Difference between IV and HV over time. Positive values indicate IV > HV.

As of September 25, 2026

See how volatility has moved over time

Track SLYG historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.

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